**Overclocking the Radeon RX 6900 XT with Liquid Devil Bios**

When it comes to pushing the limits of the Radeon RX 6900 XT, many enthusiasts are eager to explore the depths of its potential. One method that has gained attention is flashing the BIOS from a different GPU onto the RX 6900 XT. In this article, we'll delve into the process of doing so and see if it's worth the effort.

**The Approach**

To start, I downloaded the Liquid Devil Bios for the Radeon RX 6900 XT and flashed it onto my card. This involved loading the BIOS update program and hoping that there were no power outages or other interruptions during the process. The goal was to take advantage of any potential overclocking benefits that the newer BIOS might offer.

**Initial Results**

After flashing the Liquid Devil Bios, I loaded up the GPU-Z program to check on the card's reported speeds. To my surprise, it was reporting speeds of 23.15 and 24.90, which were significantly higher than the original stock speeds of 22.35 and 24.50. This suggested that the new BIOS had indeed unlocked some hidden potential in the GPU.

**Memory Overclocking**

Next, I decided to manually overclock the memory on my RX 6900 XT. This involved adjusting the memory clock speed from its default value of 2000 MHz to a higher value of 2250 MHz. By doing so, I was able to take advantage of any available frequency boost and potentially squeeze out even more performance.

**Rage Mode**

However, when I enabled Rage Mode on my RX 6900 XT, the memory overclocking took its toll, resulting in blue lines across the entire screen. This suggested that there were some issues with the BIOS update process or the memory configuration itself. As a result, I was forced to revert back to the stock settings.

**Rethinking the Approach**

Upon reflection, it became clear that flashing the Liquid Devil Bios onto my RX 6900 XT was not as straightforward as initially thought. While it did unlock some potential overclocking benefits, the risks involved were too great, and the process could have ended in disaster if not done correctly.

Additionally, I realized that manually tuning the memory settings and adjusting the clock speed had been a more reliable method of achieving optimal performance. This approach also eliminated any risk associated with flashing different BIOS onto my card.

**The Verdict**

In conclusion, while flashing the Liquid Devil Bios onto my RX 6900 XT was an interesting experiment, it's not a recommended approach for enthusiasts looking to push their GPUs to the limit. The risks involved were too great, and the benefits may not have been worth the effort.

If you're interested in achieving optimal performance on your RX 6900 XT or other Radeon-based systems, I would recommend exploring alternative methods such as manual memory overclocking or adjusting clock speeds using GPU-Z. These approaches are often more reliable and less risk-prone than attempting to flash different BIOS onto your card.

"WEBVTTKind: captionsLanguage: enall right uh we're gonna have some fun here today we're gonna try a a video that i honestly don't know if it's gonna work or not i have no idea this video is gonna even have a tangible conclusion other than we're trying something so for the last several generations and by several i mean at least three or four generations of amd graphics cards it's been a thing to flash a higher tier bios onto a lower tier card so we finally received a 6950x from powercolor here this is a red devil and we have a 6900 or let's say x xt the t matters you know because that's throwback to all the old radeon stuff anyway i have a 6900 xt here which has the bad bios remember that card we now have a 6950 uh xt so i want to see if we can put this bios on that card it worked with our 5700 and 5700 xt let's see if it works with this one we interrupt this video to bring you a special message from ifixit no we interrupt this interruption with this interruption about new stuff from pushing him grab his card but inventory sucks fix the inventory problems with ifixit whoa don't drop it can't fix that with ifixit just kidding yes you can wish you could take ifixit with you anywhere but your pockets aren't big enough introducing you more and the new nino take them with you anywhere so can i fix it for your loved ones or just get them for yourself for all intents and purposes the 6950 and the 6900 are the same card uh clock speeds are their major difference they have the exact same amount of transistors the exact same amount of rops the same amount of texture shaders it's all the same what's different here is clock speeds for both memory and gpu now the interesting thing about this here when we flashed the 5700 xt bios on the reference card to the reference 5700 non-xt we immediately started dealing with crashing because the higher clock speeds on the 5700 xt were not quite stable on the 5700 but with a little bit of manual tuning if you if you go back and watch that video we were able to get it running we were able to match the speed of the 67 or the 5700 xt and then even pass it by about two percent with a little bit of uh voltage tuning and fan speed tuning and all that sort of stuff because these are both custom cards with better coolers i don't expect it to be quite as hard they are the exact same pcb they are the exact same layout they are identical the difference between the 5700 xt and the 5700 that we showed back in the day was uh some transistor or some um voltage regulators were missing and some power phases were missing however if you look at tech powerup on these two cards you look at the specs you will find that although they have the exact same transistor account the exact same everything they do have a slightly different number when it comes to the core now they are the same core it's just i think that has everything to do with microcode because they have to be identified differently because they have a different core clock they technically are a different core because they're also two different family of gpu like there is a numbering difference for the model itself i don't know if this is going to work if it works great you know it will void your warranty obviously if you go flashing bios and stuff that's only if you had to send it back to the manufacturer with that bios on there they'll be like wait a minute but it will identify and show up in everything as a 6950 xt at that point at least i think it will you can flash it back if you ever need to warranty anything and it's not like computer ecu's in a car where they can tell they've been flashed a bunch of times it should you should be able to return it however you do this at your own risk this is not a guide on how to do it it's more or less answering the question can you if it doesn't work i like to show you why is it because you can't flash it is it because if it accepts the flash then maybe something happens in the system where um it won't post i don't know so rather than just telling you online like oh yeah it doesn't work if we've tried it offline let's you guys along for the ride to at least see why fortunately because it's a dual bios card both of them are although this one remember one of the bios died so it doesn't work funny enough power color said that they would send me a replacement and then they'd send me a label to send that one back to them so i could figure out exactly what went wrong that card never showed up neither did the label but the new card did so yeah that's why we're doing this video now i'm kind of glad it didn't show up because then we wouldn't have this card to do this with we need the older card which is that one and i want them to be identical so what i want to do is a little baseline um measurement right here i'm just going to run some times by extreme we'll do a custom run we only care about graphics i'm gonna see what our score is prior to flashing i have not powered this card up yet this is the 6950xt i have not plugged it into the system for the love of god i hope it works if it doesn't for some reason i'll grab the other bios off of tech powerup but i plan on putting this on the system stripping the bios out of it taking it off the system putting the 6900 xt back on there and then flashing this bios to it the oc bios so our graphics score there was a 10 375 hey you know what's funny we had like a 9300 9400 or something like that with a 1080 ti sli it's funny how if sli was still a thing it wouldn't necessarily obsolete your stuff that fast but anyway i digress so let me go ahead and get the 6950xt on there let me get the bios flashed um i guess i could go ahead and do the run with this on there i mean the spoiler will will be whether or not that even comes close to it but i'll just while it's on there for the sake of time i'll run time spy with the 6950xt um pull the bios off of it and then we'll go through the flashing process and see if it's going to work so it's a 10455 for the 6950xt i expected more honestly um it's 100 more msrp i mean it's not a big price jump but it is a price jump that i mean that wouldn't be noticeable in games yes this is one test this is a synthetic but synthetics typically will show bigger gaps between cards because they're perfect scaling so it's odd ten thousand four fifty five so it's almost like is it just seems like this effort doesn't even become close to worth it let me go ahead and rip pull this bios off so let's save to file all right and we'll just call this uh 6950xt something simple for the bios file boom let's now put 6900 xt on there i've already unlocked this bios because of when we were trying to fix it that day to see if something corrupted on the other bios where you're flashing the bad one um to see if it would work so this one is already unlocked i won't be doing the unlock step i'll literally just be trying to tell it to load the bios if it won't work from within the the win gui i'm going to try and do the force method using the command prompt but i don't have a huge amount of confidence that this is going to work honestly but i just want to answer the question for you guys guys that way you guys don't have to necessarily try it or if you guys spot something i'm doing incorrectly because i'd be shocked if somebody hasn't already tried this and made a video about it but i have not gone and researched if anyone else has tried this i'm sure the 3d community has already but i don't know what their their outcomes are i like to find out things on my own and then if i get screwed up then i'll go and look it up and be like oh hey look you're an idiot it was easy you just screwed up 6950xt was designed to compete against the 3090 by boosting clock speeds and memory speeds but unfortunately in the time it took for the 1650xt to come out the 6900 or the 3090 ti came out although that's a 1099 msrp versus a 2 000 msrp if i did choose between those two cards hands down a 69 500 or 69 500 xt super ti would be the best card in my opinion we've made fun of the names so much i can't even say the right one what happens if you mix red and green you get brown team brown sure bios version is quite a bit different that's fine image size xrc program subsystem id mismatch yeah see that's what i was worried about because the gui doesn't want to let us do it let me figure this out and then we'll come back so we're not wasting your time okay so we've been trying so here's the deal um the ssid on the 6900 xt is of 2414. the ssid on the new one is a 2420. i've been trying to overcome this and or even somehow write the new card to be a 2420 but i can't find anything in amd bb flash that will allow me to just force it to go i've been looking on the internet i've been looking in the guide that came with it nothing seems to be allowing me to just force it you can do that with nvidia cards nv flash will allow you to just it'll say subset id mismatch do you the ssid as a subset id uh mismatch do you want to continue with the with the cracked version you just say yes and then it's like okay buddy you're on your own you know and then you go but i can't overcome that with this but given the fact that we only went from a ten three seven five to a ten four five five between the 6900 and 69.50 that got me thinking maybe what i'll do um is i'll get the water cooled the liquid devil bios for this card because this card and the liquid devil are the same car they're just again different clock speeds which is essentially all you're getting with the 6950xt is a little bit better bend gpu with like 100 megahertz clock speed boost across the board we could manually do that but i'm curious now can i i'm just going to download the better bios and put it on there so it's a little bit less dangerous than say flashing a bios that's from a different card entirely onto here which i can't force to happen anyway and by the way if you know what i'm doing wrong please loop it down below as derek would say from vice grip garage because i'm curious as to if there is a way to manually do this because all the guides i see don't show a way to make to force it but anyway moving on um i am going to look at uh what bios are available and i'm just going to basically find the fastest one for the 6900 xt and flash that on here and see then if we can't get some some more performance out of this thing effectively for free it's like the longest file name like so unnecessarily um 6900 xt i'll call it ld for liquid devil so let's load that image program that's the part where you really hope there's no power outage or your cat or your dog knocks the cable out or something your v-bios was programmed successfully so the card is reporting speeds of 23.15 and 24.90 so they are up it was from 2235 up to 23.15 and then the 2490 i think it was like 24.50 or something like that so or 24.25 somewhere around there so it's up um memory is at 2000 that's pretty much stock one thing i do know is that the memory for the 50 or 6950x is 2225. so i'm gonna manually overclock the memory and i'm not going to touch anything else with the clock 2250 is where the 6950x is apply okay did we by flashing the liquid bios and then matching the memory get a 69 or get a 10 000 455. the thing is you could you could technically do this without flashing the bios either you could have just gone into the tuner and done it but you know me answering the tough unasked unanswered questions my two thirds sorry it's hard to talk when you have tooth pain aggressive ironically this looks oh well i'm getting some more facting i was getting blue lines across the entire screen so one of the things that we could see them is fine that's going to be the memory overclock which means the 6950x is not just obviously boo boomed binned uh navi 21 dies they are also bin memory artifacts like this can also cause a score degradation so i'm expecting the score to probably be potentially even worse than the stock one oh yeah 91.47 that's uh there's a couple reasons why that could be going into manual might have also just reduced the boost table entirely so that actually scored below our two 1080 ti's that we did so i'm gonna go ahead and turn that off i'm gonna turn that off i'm gonna turn off custom i'm gonna go to rage mode i was actually speaking steve's native language a 10 562 so it's the highest score we've had already now uh 10 562. so we had a 10375 with the stock bios a 10455 with the 6950 xt and the 10560 with the liquid bios off the 6900 xt and putting it into rage mode i did not put rage mode on the factory um bios which would have probably brought it up to probably somewhere around a 10 400 maybe which would have matched the 6950x yes you could also put the 6950xt into a rage bios and it would also then probably be higher than this they'd be leapfrogging each other by a half a percent at a time if you have to take any sort of moral from this story it's one flashing a 6950x bios to a 6900 xt not easy if doable at all two flashing liquid devil bios was also completely unnecessary because i have no doubt that we could have gone in and manually tuned this to be even faster than we're getting with rage mode and three the 6950 the 69500 t xt super ti um also just kind of seems like an unnecessary gpu to be honest i mean this is my first time getting my hands on one i was surprised it wasn't faster out of the box stock for stock because they both ran stock no rage mode no nothing and that was only 100 points difference not even 100 points anyway there you go answering the question no one asked nope can't flash it not worth it don't bother don't try thanks for watching guysall right uh we're gonna have some fun here today we're gonna try a a video that i honestly don't know if it's gonna work or not i have no idea this video is gonna even have a tangible conclusion other than we're trying something so for the last several generations and by several i mean at least three or four generations of amd graphics cards it's been a thing to flash a higher tier bios onto a lower tier card so we finally received a 6950x from powercolor here this is a red devil and we have a 6900 or let's say x xt the t matters you know because that's throwback to all the old radeon stuff anyway i have a 6900 xt here which has the bad bios remember that card we now have a 6950 uh xt so i want to see if we can put this bios on that card it worked with our 5700 and 5700 xt let's see if it works with this one we interrupt this video to bring you a special message from ifixit no we interrupt this interruption with this interruption about new stuff from pushing him grab his card but inventory sucks fix the inventory problems with ifixit whoa don't drop it can't fix that with ifixit just kidding yes you can wish you could take ifixit with you anywhere but your pockets aren't big enough introducing you more and the new nino take them with you anywhere so can i fix it for your loved ones or just get them for yourself for all intents and purposes the 6950 and the 6900 are the same card uh clock speeds are their major difference they have the exact same amount of transistors the exact same amount of rops the same amount of texture shaders it's all the same what's different here is clock speeds for both memory and gpu now the interesting thing about this here when we flashed the 5700 xt bios on the reference card to the reference 5700 non-xt we immediately started dealing with crashing because the higher clock speeds on the 5700 xt were not quite stable on the 5700 but with a little bit of manual tuning if you if you go back and watch that video we were able to get it running we were able to match the speed of the 67 or the 5700 xt and then even pass it by about two percent with a little bit of uh voltage tuning and fan speed tuning and all that sort of stuff because these are both custom cards with better coolers i don't expect it to be quite as hard they are the exact same pcb they are the exact same layout they are identical the difference between the 5700 xt and the 5700 that we showed back in the day was uh some transistor or some um voltage regulators were missing and some power phases were missing however if you look at tech powerup on these two cards you look at the specs you will find that although they have the exact same transistor account the exact same everything they do have a slightly different number when it comes to the core now they are the same core it's just i think that has everything to do with microcode because they have to be identified differently because they have a different core clock they technically are a different core because they're also two different family of gpu like there is a numbering difference for the model itself i don't know if this is going to work if it works great you know it will void your warranty obviously if you go flashing bios and stuff that's only if you had to send it back to the manufacturer with that bios on there they'll be like wait a minute but it will identify and show up in everything as a 6950 xt at that point at least i think it will you can flash it back if you ever need to warranty anything and it's not like computer ecu's in a car where they can tell they've been flashed a bunch of times it should you should be able to return it however you do this at your own risk this is not a guide on how to do it it's more or less answering the question can you if it doesn't work i like to show you why is it because you can't flash it is it because if it accepts the flash then maybe something happens in the system where um it won't post i don't know so rather than just telling you online like oh yeah it doesn't work if we've tried it offline let's you guys along for the ride to at least see why fortunately because it's a dual bios card both of them are although this one remember one of the bios died so it doesn't work funny enough power color said that they would send me a replacement and then they'd send me a label to send that one back to them so i could figure out exactly what went wrong that card never showed up neither did the label but the new card did so yeah that's why we're doing this video now i'm kind of glad it didn't show up because then we wouldn't have this card to do this with we need the older card which is that one and i want them to be identical so what i want to do is a little baseline um measurement right here i'm just going to run some times by extreme we'll do a custom run we only care about graphics i'm gonna see what our score is prior to flashing i have not powered this card up yet this is the 6950xt i have not plugged it into the system for the love of god i hope it works if it doesn't for some reason i'll grab the other bios off of tech powerup but i plan on putting this on the system stripping the bios out of it taking it off the system putting the 6900 xt back on there and then flashing this bios to it the oc bios so our graphics score there was a 10 375 hey you know what's funny we had like a 9300 9400 or something like that with a 1080 ti sli it's funny how if sli was still a thing it wouldn't necessarily obsolete your stuff that fast but anyway i digress so let me go ahead and get the 6950xt on there let me get the bios flashed um i guess i could go ahead and do the run with this on there i mean the spoiler will will be whether or not that even comes close to it but i'll just while it's on there for the sake of time i'll run time spy with the 6950xt um pull the bios off of it and then we'll go through the flashing process and see if it's going to work so it's a 10455 for the 6950xt i expected more honestly um it's 100 more msrp i mean it's not a big price jump but it is a price jump that i mean that wouldn't be noticeable in games yes this is one test this is a synthetic but synthetics typically will show bigger gaps between cards because they're perfect scaling so it's odd ten thousand four fifty five so it's almost like is it just seems like this effort doesn't even become close to worth it let me go ahead and rip pull this bios off so let's save to file all right and we'll just call this uh 6950xt something simple for the bios file boom let's now put 6900 xt on there i've already unlocked this bios because of when we were trying to fix it that day to see if something corrupted on the other bios where you're flashing the bad one um to see if it would work so this one is already unlocked i won't be doing the unlock step i'll literally just be trying to tell it to load the bios if it won't work from within the the win gui i'm going to try and do the force method using the command prompt but i don't have a huge amount of confidence that this is going to work honestly but i just want to answer the question for you guys guys that way you guys don't have to necessarily try it or if you guys spot something i'm doing incorrectly because i'd be shocked if somebody hasn't already tried this and made a video about it but i have not gone and researched if anyone else has tried this i'm sure the 3d community has already but i don't know what their their outcomes are i like to find out things on my own and then if i get screwed up then i'll go and look it up and be like oh hey look you're an idiot it was easy you just screwed up 6950xt was designed to compete against the 3090 by boosting clock speeds and memory speeds but unfortunately in the time it took for the 1650xt to come out the 6900 or the 3090 ti came out although that's a 1099 msrp versus a 2 000 msrp if i did choose between those two cards hands down a 69 500 or 69 500 xt super ti would be the best card in my opinion we've made fun of the names so much i can't even say the right one what happens if you mix red and green you get brown team brown sure bios version is quite a bit different that's fine image size xrc program subsystem id mismatch yeah see that's what i was worried about because the gui doesn't want to let us do it let me figure this out and then we'll come back so we're not wasting your time okay so we've been trying so here's the deal um the ssid on the 6900 xt is of 2414. the ssid on the new one is a 2420. i've been trying to overcome this and or even somehow write the new card to be a 2420 but i can't find anything in amd bb flash that will allow me to just force it to go i've been looking on the internet i've been looking in the guide that came with it nothing seems to be allowing me to just force it you can do that with nvidia cards nv flash will allow you to just it'll say subset id mismatch do you the ssid as a subset id uh mismatch do you want to continue with the with the cracked version you just say yes and then it's like okay buddy you're on your own you know and then you go but i can't overcome that with this but given the fact that we only went from a ten three seven five to a ten four five five between the 6900 and 69.50 that got me thinking maybe what i'll do um is i'll get the water cooled the liquid devil bios for this card because this card and the liquid devil are the same car they're just again different clock speeds which is essentially all you're getting with the 6950xt is a little bit better bend gpu with like 100 megahertz clock speed boost across the board we could manually do that but i'm curious now can i i'm just going to download the better bios and put it on there so it's a little bit less dangerous than say flashing a bios that's from a different card entirely onto here which i can't force to happen anyway and by the way if you know what i'm doing wrong please loop it down below as derek would say from vice grip garage because i'm curious as to if there is a way to manually do this because all the guides i see don't show a way to make to force it but anyway moving on um i am going to look at uh what bios are available and i'm just going to basically find the fastest one for the 6900 xt and flash that on here and see then if we can't get some some more performance out of this thing effectively for free it's like the longest file name like so unnecessarily um 6900 xt i'll call it ld for liquid devil so let's load that image program that's the part where you really hope there's no power outage or your cat or your dog knocks the cable out or something your v-bios was programmed successfully so the card is reporting speeds of 23.15 and 24.90 so they are up it was from 2235 up to 23.15 and then the 2490 i think it was like 24.50 or something like that so or 24.25 somewhere around there so it's up um memory is at 2000 that's pretty much stock one thing i do know is that the memory for the 50 or 6950x is 2225. so i'm gonna manually overclock the memory and i'm not going to touch anything else with the clock 2250 is where the 6950x is apply okay did we by flashing the liquid bios and then matching the memory get a 69 or get a 10 000 455. the thing is you could you could technically do this without flashing the bios either you could have just gone into the tuner and done it but you know me answering the tough unasked unanswered questions my two thirds sorry it's hard to talk when you have tooth pain aggressive ironically this looks oh well i'm getting some more facting i was getting blue lines across the entire screen so one of the things that we could see them is fine that's going to be the memory overclock which means the 6950x is not just obviously boo boomed binned uh navi 21 dies they are also bin memory artifacts like this can also cause a score degradation so i'm expecting the score to probably be potentially even worse than the stock one oh yeah 91.47 that's uh there's a couple reasons why that could be going into manual might have also just reduced the boost table entirely so that actually scored below our two 1080 ti's that we did so i'm gonna go ahead and turn that off i'm gonna turn that off i'm gonna turn off custom i'm gonna go to rage mode i was actually speaking steve's native language a 10 562 so it's the highest score we've had already now uh 10 562. so we had a 10375 with the stock bios a 10455 with the 6950 xt and the 10560 with the liquid bios off the 6900 xt and putting it into rage mode i did not put rage mode on the factory um bios which would have probably brought it up to probably somewhere around a 10 400 maybe which would have matched the 6950x yes you could also put the 6950xt into a rage bios and it would also then probably be higher than this they'd be leapfrogging each other by a half a percent at a time if you have to take any sort of moral from this story it's one flashing a 6950x bios to a 6900 xt not easy if doable at all two flashing liquid devil bios was also completely unnecessary because i have no doubt that we could have gone in and manually tuned this to be even faster than we're getting with rage mode and three the 6950 the 69500 t xt super ti um also just kind of seems like an unnecessary gpu to be honest i mean this is my first time getting my hands on one i was surprised it wasn't faster out of the box stock for stock because they both ran stock no rage mode no nothing and that was only 100 points difference not even 100 points anyway there you go answering the question no one asked nope can't flash it not worth it don't bother don't try thanks for watching guys\n"