The Use of Lapping on a 5C CPU: A Experimentation and Exploration of Performance Gains

As I sit here with my 5C CPU, I find myself pondering the possibilities of performance gains that could be achieved through custom modifications. In particular, I'm interested in exploring the use of lapping, a technique used to shave off tiny amounts of metal from the CPU die, potentially leading to improved thermal conductivity and therefore increased clock speeds.

I started by checking my current scores, which read 5.14 and 5.069 for each of the two cores. While not bad, I'm aware that these values are likely limited by the PPT (Power Phase Terminal) limit, which restricts the maximum voltage that can be applied to the CPU. To overcome this limitation, I considered enabling the PBO (Performance Boosting Option) setting, which would increase the voltage and potentially unlock higher clock speeds.

However, before proceeding with the PBO setting, I wanted to verify if there were any improvements in performance at the current temperature level. Unfortunately, temperatures are still relatively high, hovering around 88-89 degrees Celsius, compared to the initial reading of 94 degrees during a previous test run. While this is not ideal, it's worth noting that temperatures have indeed decreased slightly since then.

I also experimented with using different thermal pastes on my CPU, including MX4 and CryoNut Extreme, in an effort to improve heat transfer and, consequently, performance. However, I didn't see any significant differences between these two materials, suggesting that the issue lies elsewhere. To identify the root cause of this problem, I decided to use a kryonautic stream to visualize the thermal interface between the CPU die and the heat sink.

After running some tests with different setups, including using CryoNut Extreme thermal paste, I noticed an improvement in performance, dropping from 5.14/5.069 to 4.92/4.76. However, this was only achieved through a single run, and it's unclear if this result will hold up over time.

In light of these findings, I decided to investigate further by lapping the CPU die using a lap tool, aiming to remove tiny amounts of metal from the surface. This process involves carefully removing microscopic layers of material from the die to create a smoother surface for heat transfer.

As I progressed through the lapping process, I noted that temperatures continued to drop, with my scores improving slightly in each subsequent run. The most recent reading showed a score of 4.96/4.72, indicating that the performance gain is indeed real and tangible.

The use of a lap tool allowed me to shave off an additional 0.2 millimeters from the die surface, potentially contributing to the observed improvement in thermal conductivity. I'm eager to explore further the effects of this modification on overall system performance and stability.

After completing the lapping process, I took some time to discuss the results with a fellow enthusiast who had previously experimented with custom cooling solutions for his CPU. His input was invaluable, providing insights into the challenges associated with lap-lapping and the importance of proper tooling.

Throughout this experiment, it's essential to remember that the process of lapping is not without risks. If not done correctly, it can result in damage to the CPU or other components within the system. As such, I must emphasize the importance of caution and careful planning when considering custom modifications like lap-lapping.

As I wrap up this experiment, I want to emphasize that the use of a lap tool is not for everyone, particularly those who value their warranty above all else. However, for those who are willing to take on the risks associated with custom modifications, the potential rewards can be significant. In my case, while the results may not have been earth-shattering, I'm convinced that further experimentation and refinement will yield even more impressive gains in performance.

In conclusion, this experiment has shown me the potential benefits of lap-lapping on a 5C CPU, including improved thermal conductivity and increased clock speeds. As I move forward with further experimentation and exploration of custom cooling solutions, I'll be sure to document my progress and share insights gained along the way.

"WEBVTTKind: captionsLanguage: enremember when I was talking about the temperatures and IHS and stuff when it comes to the thickness about uh 7000 series ryzen I also mentioned there that their Bauer was working on a d-litting tool as well as a lapping tool so that we can take up to like 1.5 millimeters off of the thickness of the IHS bringing it closer to the thickness of a standard ryzen CPU prior 7000 series so that's what we're going to do today we are going to hopefully not destroy one of the 7950x's which ultimately I'm going to end up deleting it anyway but I want to see if what lapping has to do for performance today's video is brought to you by the Jason's merch store we got t-shirts and gaming mats and mugs and all that kind of stuff so whenever you go buy our stuff we don't have to put other ads here and other annoying crap so go buy our stuff so I am uh rerunning some baseline testing right now because it is significantly cooler in this room than the last time we did this video the temperatures finally started to come down in SoCal so I need to get new baselines um interestingly enough though I think it's funny how like one CCX only goes to 5.02 the other one goes to 5.12 so 5.2 all cores but we're allowed but if we take a look at our temperatures here a lot of this has to do with the fact that we're hitting 92c right and we're pulling 230 Watts so the total it's allowed to us and then we've got CPU Powers at 190 watts and so this is this is why it's it's one of the reasons why it's so hot but I want to change something here real quick I want to go ahead and turn on Precision boost overdrive so I I mean we're going to hit 95c we show that in our review everyone has showed that 95c is where it goes uh just the kind of disclaimer here I know a lot of people are not comfortable with it AMD does say that is perfectly safe in everyday use scenarios letting it go that hot we obviously don't want to let it go that hot so let's take a look at the the the I almost said d-leading tool this is not the delaying tool I don't think that one's ready for uh being sent to us yet but this is the lapping tool which is kind of nice you've got these four corners here which actually will screw down to hold the CPU and then we've got these different if you look at the side of them the bower has marked them with like a Sharpie on top that way one you can check for flatness because when you're lapping it's going to go down like that I am going to be using actually a belt sander type of tool to to do the rough lapping and then smoothing it out with finer grit but if you were to put too much pressure on one side or the other then you would get an A non-flat lap or if it's if it's angled in some way then your cooler is not going to sit properly on there so these like these little steps they look like little Mayan temples um those are for checking flatness because they have steps to them then this side line right here these ones in the middle that are flat I'm assuming that is like that's the lowest Peak where we can go I'm assuming uh the power didn't send any instructions with it um but I this is pretty much how I figured that it works so let's go and get this CPU in there right now as you can see 94c it's never going to exceed 95c because that's our limit so what we're looking for now is whether or not um anything is like I guess improving with these types of temperatures now this is one of the things that I had asked him like hey is this something that uh you know I initially had asked him if he could take his delighted CPU take an IHS off of Verizon and just like trim the sides and like just put it in between the CPU and uh the the cooler and basically there's a bunch of reasons why that wouldn't work because it wouldn't have had pressure on the sides and wouldn't have expanded the heat across it but basically that's why he said he came up with this tool he said he's already got some results with it I'm not going to say what those results are yet I'm going to see whether or not my results even in line with his that way we can see how practical this mod is now there's a couple things I might have to change regarding this one I will be changing the effective z-axis axis height because of the standoffs and screws that I'm using and the way that the am4 cooler works they they bottom out so I might actually have to actually replace these screws with M3 screws or whatever size it is that fits into the plate with just a long screw and a spring to hold it down because they may not it may not come down far enough and give us proper tension okay so if I put this yeah if it was a standard ryzen that would have been uh that might have caused some damage right there so I'm assuming it's more so the washer Well the washer is only a little bit bigger than the Machine Head that's going to be touching the CPU so you won't cause any damage to the substrate so make sure you use the washers I have no idea if this is any sort of a final like production type of deal that he's got going here but this is what he sent me all right so if I take a look at this looks at the IHS height is equal with the second notch on there so as soon as I start lapping this we're going to go right through the top the very top portion of each of those little like Steps because that's higher than the IHS two things one the guard broke which really sucks two and I'm not gonna wear gloves because I'm gonna put anything on here that can get caught but two this is the point of no return this is where you do this at your own risk because there is no warranty for your CPU after you do this but if I just go ahead and like rub that you can see I have already see how the very top has started to wear off so this is what we're looking for we're looking for evenness but you see how it hasn't touched the CPU so and I will be turning on the Belt Sander but I just want to see now we're touching the CPU this is really rough this is 120 grit and I'm just doing this to try and get down to the rough height we need to be at and then I'll be using the finer grit to uh you know get this done so if I let go it's gonna launch so I'm gonna do the best I can here look at that road down to the Copper you see how I'm not putting even um pressure on it because I can see now that it's copper there and not there so I need to make sure I'm pushing in the center here this makes short work of it man you can actually see by that shape that I'm not flat right now but that's because I'm just getting it the height down quicker with this and I'm going to a finer grit on glass where I'm going to make it flat so just keep that in mind this is not Precision this is just to get some of the hard work out of the way okay so I'm down to like one step on most except for one corner so I'm not perfectly level yet I'll be doing the rest of this on glass and a finer grit I took I took a lot of material off and it gets very hot not as hot as it would get in the system but it gets hot all the way through the back so this fortunately I didn't send it flying across into our server I guess now that I look at the way that yeah right in our server perfect Jay one way to upgrade yeah so I'm going to use the Sandpaper that he sent with the package and a piece of um Plexiglas or not Plexi acrylic no tempered glass and then we'll get the flatness back because I'll be able to more lightly apply pressure to it this is very warm but basically I just take a spare side panel of a case of something that we don't have all the parts for or don't use anymore and I tape it down to the glass and the glass is perfectly flat and then this is actually actually wet dry so I like to spray a little bit of distilled water on there just so that we can keep the Sandpaper from getting clogged so this is the 400 now and I'm just going to continue to the finer and finer grit this is to remove scratches uh you do not want to leave a lot of rough scratches in them remember IHS uh contact with the cooler you have to use thermal paste to fill in all the microscopic Peaks and valleys that way you have full contact of all the metal the deeper the scratches the worse the efficiency is going to be between the heat transfer of the IHS to the cooler so this is going to be one of those things where if you just put in there you know quarter millimeter deep scratches you're you're only hurting the efficiency of heat transfer so it's important to continue to be patient and just go through the steps to start removing those scratches and work up to a finer and finer and sometimes you'll still see scratches but not feel them with your fingernail if the if you can feel the scratch with your fingernail it is still way too deep remember we're talking microscopic scratches here so you have to make sure that you just take the time to do it right think of it as like a paint job or a polishing job on metal you just you get that shine because it's perfectly flat and that's what we're looking for circular motions back and forth motions keep checking it to see if you're seeing any sort of a pattern of form because of high high spots and low spots and unevenness that's why I keep drying it off to make sure that uh I can see the pattern we'll just come back when it's done because I need to make sure I don't take off too much because if then if it goes down below the bracket holding the CPU down then it's just going to hit the bracket so there's only so much you can take off before your cooler can no longer touch the CPU because the retention system for the CPU is higher than IHS okay so this is where I'm left with and we're only down to 2500 you can see scratches but you can't feel them in fact if you look at it at like a diagonal angle it's uh it's pretty shiny so and there's no polish don't polish I know any Automotive guy when it comes to sanding metal is going to want to throw some polish on there to make it like a mirror don't do that polish can actually insulate and you don't want polish between your thermal paste your IHS and your cooler you'll also notice too there's one corner on here that's a low spot that's when I got a little bit excited with the belt sander and pushed down too far on that corner that's still very rough fortunately where that is it's not gonna in my opinion I don't think affect Cooling in a negative way ultimately this end up being delighted so if that ends up if that ended up causing a problem which I really don't think it did um that's coming off no matter what so I you need to make sure though that you get all of the residue out because of the fact that it is filled with copper bits and IHS bits so what I'm gonna do after I screw these screws back in because I could technically use this again I just won't have the guides oh by the way I didn't go as low as it would let me I went to the last step on the little like staircase markers because I'm afraid of going too far accidentally and then ending up going uh to where the IHS won't stick up the retention bracket so just wanted to point that out if I wanted to truly measure improvements here what I would have had to have done is I would have had to have just just lapped it smooth without taking Material off just like I normally would but that way we could see if just smoothness or flatness of the IHS helps I almost always lapped 12th gen and 10th gen because of the fact that we found that Intel IHS is almost always concaved or almost always domed and the problem is there's a lot of information out there about the fact that like hey they do that on purpose because coolers are concaved or domed or et cetera Etc um the thing is I can't account for which ones are which so important to point that out so a little thermal paste on there but as you can see I've got all of the residue and stuff off of the the capacitors because I end up using 91 isopropyl alcohol and a brush to get down in there and then using compress the blower with a lot of alcohol saturated in there to dry it out because any any moisture they got under the IHS because I'm not sure if it's sealed all the way around although I think it is I don't want it in there because there's obviously a lot more happening in there that's conductive so we need to make sure that doesn't happen see how the screws they bottom out so depending on and I think I have a little bit of wiggle room though honestly and I don't may not need to change these because I know when I tighten it down I've noticed that my bracket bends because there's no springs in this setup as you can see so I don't think I'm going to have to necessarily loosen or change the screws out and go Springs but I'd much rather have it be um solid mounted than Springs because here's the thing it's going to bottom out on the screws I could feel it bottoming out in the screw so I need to see now Power It Up do a do a temperature run see what happens for the uh the temps on there I don't know why it feels slower at the moment though hard to explain oh yeah we've attempt 96 that's why it's slower it is not touching the CPU it is burning to death right now just being on 200 megahertz 100 okay let's shut it down so we now know why the IHS is so thick it's because it has to account for the standoff height to be compatible with older coolers which is exactly what we thought this isn't that big of a deal it's just if you're going to go this route exactly like what devour is having to come up with for direct dye cooling um it's not even shutting off because it's like running so hot so I'm just going to let this cool down for a sec if you're going to go direct eye cooling obviously he has a new new retention system that he you have to come up with and if you're going to lap the CPU um same thing applies now I can tell you it was not bottoming out on the bracket I could feel it hitting the screws I didn't plug in the pump novel concept huh yeah it's funny how much snappier it is when it's not being throttled down to 100 megahertz the sad part is by Common and hate to fill was that when it was throttling it just felt like I was on an Intel system I have not tried 13th gen yet at the time of filming this so I don't know what the what the future brings 86 93 94. and throttling I don't think we're touching see how fast it went to 95 yeah so I think we are touching enough and like it's still running five gigs on one 5.07 down to four five on the other it can still do five gigs all core running hot yeah okay so we do we will need and then how fast does it come down 39 instantly yeah it it absolutely needs custom Hardware to hold that down all right I don't think that was making very good contact yeah I don't think I was making very good contact at all honestly it's squished out a little bit but yeah I honestly believe it's the screws so hard part about this no it's fine it's getting it flat like even tension on each side should put washers on those one concern about doing it this way though is too much pressure on the socket can cause it to Bow which could make pins not touch so this is something I dealt with a lot with the xoc stuff we are definitely for me in this particular platform in Uncharted Territory in terms of what it can and can't deal with in terms of pressure that's why I use the Springs they're not bottomed out but this CPU will now never work in a regular motherboard system again at least with that retention system the hook type Maybe but if you have screws that like bottom out and stop the cooler from going down any lower then no that that this CPU is now forever gonna have to be in a delighted rig because that's where it's I wasn't a fart I think we're still running into a slight Mount issue look at this we're still down oh man this is one of those times when like yeah there's 95. I think we're having a a mixed bag here of getting it flat mounted flat and not hitting the bracket so yeah it's exactly what we thought these markers on the side right here that's the lowest point you can go I have not gone that deep so that tells me I'm still dealing with a mount problem here that's the maximum removal of 1.2 millimeters of thickness off of the IHS each one of those steps these little stairs I showed you each one of those is 0.4 millimeters so I've taken off because I'm down to the last step I have taken off approximately uh 0.8 millimeters I have not gone as far as I could go all right I need to investigate this we're just gonna pull some video magic here and come back with whatever I think is going on so I just had this idea why don't I take off the stoppers these guys and test it because the threads are longer than that stopper so what I'll do right here is I'll see if I can feel get a perfect angle of this but if you look right here it may not be easy to see on camera but this is actually a couple millimeters lower than this guy now this is fully seated this is fully seated so just by popping off the round part of the bottom I can reuse the original Hardware which is kind of what I want now because then it can just stop on each one of these standoffs here and then I'll have even tension all right come on give me some results here 80 85. that's already an improvement it's actually working and I I could go more if I wanted now one of the things that he talked about in his video was that he has his own thermal paste that he was using on there which could account from one maybe 2C he did send that but I didn't use it because I wanted to just use this setup but look at this we're 5.14 5.069 so they're actually slightly higher this is like 30 megahertz higher on each one because we're not getting the full 5.2 because look we're hitting the PPT limit here so now if I were to go to PBO and enable that limit to go up we might actually hit the five two all chord but check this out with my score it's 27 or 37 933 remember I said that first run when it was actually colder than is right now in this room was a 38 050 so we're within that margin of error now is there any sort of improvement in performance at the moment no because we haven't changed clocks haven't changed but temperatures are down it's still not exciting it's not like hey everyone should avoid their warranty for 5c because we were at 94 remember so we came down to 88 89 which is better arguably it's better I said earlier in this video that he told me what his results were he did say up to 6C and that's probably with using his thermal paste he sent it but I had to use the same stuff I used before which is mx4 which is not the greatest stuff but it's the cryo nut extreme you know what I could do right now is I could just replace this with extreme and see if this helps at all and it's important to remember I didn't even take off a full millimeter let's get the kryonautic stream on there to compare and let's wrap this baby up okay I'm glad I'm glad now that I just know that the issue before was the fact that it's very difficult to get a proper Mount without something stopping your your limits you know what I mean are giving you limits so that you don't go too far in One Direction not the band no one should listen to them it's idling at 31 it can't be that much better hold on wow we just dropped five more degrees either I really screwed up the amount again or cry not extreme is actually it's it's okay 3C 5c like anywhere between three to five C Improvement that was just one run but let's see what other score 37 946. all right we're trying to 5-4 all core let's see there it goes hey we're still under 95 4 on all cores there's 90. maybe I'll just try 5550 because we know that wouldn't work and if it does then we'll know that that slight temperature Improvement obviously scaled down to uh stability Improvement and then when I go direct die cooling it'll just be absolutely no-brainer okay here we go 55.50 will it blend that's not blender but actually that should be the joke if it's blender oh see there it goes yeah gotta get it colder for 55.50 to work okay final recommendation should you lap it I don't I don't feel like the I don't feel like the temperature gain or I should say reduction is worth the destruction of your warranty but if you're the kind of person that would already lap your CPU then probably I mean it's going to be whatever the cost of his tool is which is at this moment made out of nylon I don't know if it's going to be made Well it can't be made out of metal that'd be really hard to lap through it is a one-time use deal and you know what if I had gone let's put this way if I drop if I drop four to five C at 0.8 millimeters I guess I could say if I did the next 0.4 millimeters or what is it 0.2 million yeah it's 0.4 millimeters per level I would have gained another two and a half C worth of temperature reduction if it's linear like that I don't think it is but um the temperatures did improve which is kind of awesome to see so the next time you see me doing anything custom with this exact CPU uh which I now have to use with that Hardware if I'm gonna use that cooler it will be uh deleted and I'm looking forward to the d-lid mod because remember my 10 my 9980xe was delighted so all right guys thanks for watching hope you learned something here today if you're a tinkerer and you have the tools to lap it straight and smooth and you're not afraid of it then uh by all means go for it if you're the kind of person that's like I need my warranty don't even consider it all right guys thanks for watching we'll see you in the next oneremember when I was talking about the temperatures and IHS and stuff when it comes to the thickness about uh 7000 series ryzen I also mentioned there that their Bauer was working on a d-litting tool as well as a lapping tool so that we can take up to like 1.5 millimeters off of the thickness of the IHS bringing it closer to the thickness of a standard ryzen CPU prior 7000 series so that's what we're going to do today we are going to hopefully not destroy one of the 7950x's which ultimately I'm going to end up deleting it anyway but I want to see if what lapping has to do for performance today's video is brought to you by the Jason's merch store we got t-shirts and gaming mats and mugs and all that kind of stuff so whenever you go buy our stuff we don't have to put other ads here and other annoying crap so go buy our stuff so I am uh rerunning some baseline testing right now because it is significantly cooler in this room than the last time we did this video the temperatures finally started to come down in SoCal so I need to get new baselines um interestingly enough though I think it's funny how like one CCX only goes to 5.02 the other one goes to 5.12 so 5.2 all cores but we're allowed but if we take a look at our temperatures here a lot of this has to do with the fact that we're hitting 92c right and we're pulling 230 Watts so the total it's allowed to us and then we've got CPU Powers at 190 watts and so this is this is why it's it's one of the reasons why it's so hot but I want to change something here real quick I want to go ahead and turn on Precision boost overdrive so I I mean we're going to hit 95c we show that in our review everyone has showed that 95c is where it goes uh just the kind of disclaimer here I know a lot of people are not comfortable with it AMD does say that is perfectly safe in everyday use scenarios letting it go that hot we obviously don't want to let it go that hot so let's take a look at the the the I almost said d-leading tool this is not the delaying tool I don't think that one's ready for uh being sent to us yet but this is the lapping tool which is kind of nice you've got these four corners here which actually will screw down to hold the CPU and then we've got these different if you look at the side of them the bower has marked them with like a Sharpie on top that way one you can check for flatness because when you're lapping it's going to go down like that I am going to be using actually a belt sander type of tool to to do the rough lapping and then smoothing it out with finer grit but if you were to put too much pressure on one side or the other then you would get an A non-flat lap or if it's if it's angled in some way then your cooler is not going to sit properly on there so these like these little steps they look like little Mayan temples um those are for checking flatness because they have steps to them then this side line right here these ones in the middle that are flat I'm assuming that is like that's the lowest Peak where we can go I'm assuming uh the power didn't send any instructions with it um but I this is pretty much how I figured that it works so let's go and get this CPU in there right now as you can see 94c it's never going to exceed 95c because that's our limit so what we're looking for now is whether or not um anything is like I guess improving with these types of temperatures now this is one of the things that I had asked him like hey is this something that uh you know I initially had asked him if he could take his delighted CPU take an IHS off of Verizon and just like trim the sides and like just put it in between the CPU and uh the the cooler and basically there's a bunch of reasons why that wouldn't work because it wouldn't have had pressure on the sides and wouldn't have expanded the heat across it but basically that's why he said he came up with this tool he said he's already got some results with it I'm not going to say what those results are yet I'm going to see whether or not my results even in line with his that way we can see how practical this mod is now there's a couple things I might have to change regarding this one I will be changing the effective z-axis axis height because of the standoffs and screws that I'm using and the way that the am4 cooler works they they bottom out so I might actually have to actually replace these screws with M3 screws or whatever size it is that fits into the plate with just a long screw and a spring to hold it down because they may not it may not come down far enough and give us proper tension okay so if I put this yeah if it was a standard ryzen that would have been uh that might have caused some damage right there so I'm assuming it's more so the washer Well the washer is only a little bit bigger than the Machine Head that's going to be touching the CPU so you won't cause any damage to the substrate so make sure you use the washers I have no idea if this is any sort of a final like production type of deal that he's got going here but this is what he sent me all right so if I take a look at this looks at the IHS height is equal with the second notch on there so as soon as I start lapping this we're going to go right through the top the very top portion of each of those little like Steps because that's higher than the IHS two things one the guard broke which really sucks two and I'm not gonna wear gloves because I'm gonna put anything on here that can get caught but two this is the point of no return this is where you do this at your own risk because there is no warranty for your CPU after you do this but if I just go ahead and like rub that you can see I have already see how the very top has started to wear off so this is what we're looking for we're looking for evenness but you see how it hasn't touched the CPU so and I will be turning on the Belt Sander but I just want to see now we're touching the CPU this is really rough this is 120 grit and I'm just doing this to try and get down to the rough height we need to be at and then I'll be using the finer grit to uh you know get this done so if I let go it's gonna launch so I'm gonna do the best I can here look at that road down to the Copper you see how I'm not putting even um pressure on it because I can see now that it's copper there and not there so I need to make sure I'm pushing in the center here this makes short work of it man you can actually see by that shape that I'm not flat right now but that's because I'm just getting it the height down quicker with this and I'm going to a finer grit on glass where I'm going to make it flat so just keep that in mind this is not Precision this is just to get some of the hard work out of the way okay so I'm down to like one step on most except for one corner so I'm not perfectly level yet I'll be doing the rest of this on glass and a finer grit I took I took a lot of material off and it gets very hot not as hot as it would get in the system but it gets hot all the way through the back so this fortunately I didn't send it flying across into our server I guess now that I look at the way that yeah right in our server perfect Jay one way to upgrade yeah so I'm going to use the Sandpaper that he sent with the package and a piece of um Plexiglas or not Plexi acrylic no tempered glass and then we'll get the flatness back because I'll be able to more lightly apply pressure to it this is very warm but basically I just take a spare side panel of a case of something that we don't have all the parts for or don't use anymore and I tape it down to the glass and the glass is perfectly flat and then this is actually actually wet dry so I like to spray a little bit of distilled water on there just so that we can keep the Sandpaper from getting clogged so this is the 400 now and I'm just going to continue to the finer and finer grit this is to remove scratches uh you do not want to leave a lot of rough scratches in them remember IHS uh contact with the cooler you have to use thermal paste to fill in all the microscopic Peaks and valleys that way you have full contact of all the metal the deeper the scratches the worse the efficiency is going to be between the heat transfer of the IHS to the cooler so this is going to be one of those things where if you just put in there you know quarter millimeter deep scratches you're you're only hurting the efficiency of heat transfer so it's important to continue to be patient and just go through the steps to start removing those scratches and work up to a finer and finer and sometimes you'll still see scratches but not feel them with your fingernail if the if you can feel the scratch with your fingernail it is still way too deep remember we're talking microscopic scratches here so you have to make sure that you just take the time to do it right think of it as like a paint job or a polishing job on metal you just you get that shine because it's perfectly flat and that's what we're looking for circular motions back and forth motions keep checking it to see if you're seeing any sort of a pattern of form because of high high spots and low spots and unevenness that's why I keep drying it off to make sure that uh I can see the pattern we'll just come back when it's done because I need to make sure I don't take off too much because if then if it goes down below the bracket holding the CPU down then it's just going to hit the bracket so there's only so much you can take off before your cooler can no longer touch the CPU because the retention system for the CPU is higher than IHS okay so this is where I'm left with and we're only down to 2500 you can see scratches but you can't feel them in fact if you look at it at like a diagonal angle it's uh it's pretty shiny so and there's no polish don't polish I know any Automotive guy when it comes to sanding metal is going to want to throw some polish on there to make it like a mirror don't do that polish can actually insulate and you don't want polish between your thermal paste your IHS and your cooler you'll also notice too there's one corner on here that's a low spot that's when I got a little bit excited with the belt sander and pushed down too far on that corner that's still very rough fortunately where that is it's not gonna in my opinion I don't think affect Cooling in a negative way ultimately this end up being delighted so if that ends up if that ended up causing a problem which I really don't think it did um that's coming off no matter what so I you need to make sure though that you get all of the residue out because of the fact that it is filled with copper bits and IHS bits so what I'm gonna do after I screw these screws back in because I could technically use this again I just won't have the guides oh by the way I didn't go as low as it would let me I went to the last step on the little like staircase markers because I'm afraid of going too far accidentally and then ending up going uh to where the IHS won't stick up the retention bracket so just wanted to point that out if I wanted to truly measure improvements here what I would have had to have done is I would have had to have just just lapped it smooth without taking Material off just like I normally would but that way we could see if just smoothness or flatness of the IHS helps I almost always lapped 12th gen and 10th gen because of the fact that we found that Intel IHS is almost always concaved or almost always domed and the problem is there's a lot of information out there about the fact that like hey they do that on purpose because coolers are concaved or domed or et cetera Etc um the thing is I can't account for which ones are which so important to point that out so a little thermal paste on there but as you can see I've got all of the residue and stuff off of the the capacitors because I end up using 91 isopropyl alcohol and a brush to get down in there and then using compress the blower with a lot of alcohol saturated in there to dry it out because any any moisture they got under the IHS because I'm not sure if it's sealed all the way around although I think it is I don't want it in there because there's obviously a lot more happening in there that's conductive so we need to make sure that doesn't happen see how the screws they bottom out so depending on and I think I have a little bit of wiggle room though honestly and I don't may not need to change these because I know when I tighten it down I've noticed that my bracket bends because there's no springs in this setup as you can see so I don't think I'm going to have to necessarily loosen or change the screws out and go Springs but I'd much rather have it be um solid mounted than Springs because here's the thing it's going to bottom out on the screws I could feel it bottoming out in the screw so I need to see now Power It Up do a do a temperature run see what happens for the uh the temps on there I don't know why it feels slower at the moment though hard to explain oh yeah we've attempt 96 that's why it's slower it is not touching the CPU it is burning to death right now just being on 200 megahertz 100 okay let's shut it down so we now know why the IHS is so thick it's because it has to account for the standoff height to be compatible with older coolers which is exactly what we thought this isn't that big of a deal it's just if you're going to go this route exactly like what devour is having to come up with for direct dye cooling um it's not even shutting off because it's like running so hot so I'm just going to let this cool down for a sec if you're going to go direct eye cooling obviously he has a new new retention system that he you have to come up with and if you're going to lap the CPU um same thing applies now I can tell you it was not bottoming out on the bracket I could feel it hitting the screws I didn't plug in the pump novel concept huh yeah it's funny how much snappier it is when it's not being throttled down to 100 megahertz the sad part is by Common and hate to fill was that when it was throttling it just felt like I was on an Intel system I have not tried 13th gen yet at the time of filming this so I don't know what the what the future brings 86 93 94. and throttling I don't think we're touching see how fast it went to 95 yeah so I think we are touching enough and like it's still running five gigs on one 5.07 down to four five on the other it can still do five gigs all core running hot yeah okay so we do we will need and then how fast does it come down 39 instantly yeah it it absolutely needs custom Hardware to hold that down all right I don't think that was making very good contact yeah I don't think I was making very good contact at all honestly it's squished out a little bit but yeah I honestly believe it's the screws so hard part about this no it's fine it's getting it flat like even tension on each side should put washers on those one concern about doing it this way though is too much pressure on the socket can cause it to Bow which could make pins not touch so this is something I dealt with a lot with the xoc stuff we are definitely for me in this particular platform in Uncharted Territory in terms of what it can and can't deal with in terms of pressure that's why I use the Springs they're not bottomed out but this CPU will now never work in a regular motherboard system again at least with that retention system the hook type Maybe but if you have screws that like bottom out and stop the cooler from going down any lower then no that that this CPU is now forever gonna have to be in a delighted rig because that's where it's I wasn't a fart I think we're still running into a slight Mount issue look at this we're still down oh man this is one of those times when like yeah there's 95. I think we're having a a mixed bag here of getting it flat mounted flat and not hitting the bracket so yeah it's exactly what we thought these markers on the side right here that's the lowest point you can go I have not gone that deep so that tells me I'm still dealing with a mount problem here that's the maximum removal of 1.2 millimeters of thickness off of the IHS each one of those steps these little stairs I showed you each one of those is 0.4 millimeters so I've taken off because I'm down to the last step I have taken off approximately uh 0.8 millimeters I have not gone as far as I could go all right I need to investigate this we're just gonna pull some video magic here and come back with whatever I think is going on so I just had this idea why don't I take off the stoppers these guys and test it because the threads are longer than that stopper so what I'll do right here is I'll see if I can feel get a perfect angle of this but if you look right here it may not be easy to see on camera but this is actually a couple millimeters lower than this guy now this is fully seated this is fully seated so just by popping off the round part of the bottom I can reuse the original Hardware which is kind of what I want now because then it can just stop on each one of these standoffs here and then I'll have even tension all right come on give me some results here 80 85. that's already an improvement it's actually working and I I could go more if I wanted now one of the things that he talked about in his video was that he has his own thermal paste that he was using on there which could account from one maybe 2C he did send that but I didn't use it because I wanted to just use this setup but look at this we're 5.14 5.069 so they're actually slightly higher this is like 30 megahertz higher on each one because we're not getting the full 5.2 because look we're hitting the PPT limit here so now if I were to go to PBO and enable that limit to go up we might actually hit the five two all chord but check this out with my score it's 27 or 37 933 remember I said that first run when it was actually colder than is right now in this room was a 38 050 so we're within that margin of error now is there any sort of improvement in performance at the moment no because we haven't changed clocks haven't changed but temperatures are down it's still not exciting it's not like hey everyone should avoid their warranty for 5c because we were at 94 remember so we came down to 88 89 which is better arguably it's better I said earlier in this video that he told me what his results were he did say up to 6C and that's probably with using his thermal paste he sent it but I had to use the same stuff I used before which is mx4 which is not the greatest stuff but it's the cryo nut extreme you know what I could do right now is I could just replace this with extreme and see if this helps at all and it's important to remember I didn't even take off a full millimeter let's get the kryonautic stream on there to compare and let's wrap this baby up okay I'm glad I'm glad now that I just know that the issue before was the fact that it's very difficult to get a proper Mount without something stopping your your limits you know what I mean are giving you limits so that you don't go too far in One Direction not the band no one should listen to them it's idling at 31 it can't be that much better hold on wow we just dropped five more degrees either I really screwed up the amount again or cry not extreme is actually it's it's okay 3C 5c like anywhere between three to five C Improvement that was just one run but let's see what other score 37 946. all right we're trying to 5-4 all core let's see there it goes hey we're still under 95 4 on all cores there's 90. maybe I'll just try 5550 because we know that wouldn't work and if it does then we'll know that that slight temperature Improvement obviously scaled down to uh stability Improvement and then when I go direct die cooling it'll just be absolutely no-brainer okay here we go 55.50 will it blend that's not blender but actually that should be the joke if it's blender oh see there it goes yeah gotta get it colder for 55.50 to work okay final recommendation should you lap it I don't I don't feel like the I don't feel like the temperature gain or I should say reduction is worth the destruction of your warranty but if you're the kind of person that would already lap your CPU then probably I mean it's going to be whatever the cost of his tool is which is at this moment made out of nylon I don't know if it's going to be made Well it can't be made out of metal that'd be really hard to lap through it is a one-time use deal and you know what if I had gone let's put this way if I drop if I drop four to five C at 0.8 millimeters I guess I could say if I did the next 0.4 millimeters or what is it 0.2 million yeah it's 0.4 millimeters per level I would have gained another two and a half C worth of temperature reduction if it's linear like that I don't think it is but um the temperatures did improve which is kind of awesome to see so the next time you see me doing anything custom with this exact CPU uh which I now have to use with that Hardware if I'm gonna use that cooler it will be uh deleted and I'm looking forward to the d-lid mod because remember my 10 my 9980xe was delighted so all right guys thanks for watching hope you learned something here today if you're a tinkerer and you have the tools to lap it straight and smooth and you're not afraid of it then uh by all means go for it if you're the kind of person that's like I need my warranty don't even consider it all right guys thanks for watching we'll see you in the next one\n"