4K Monitors - The Wasabi Mango UHD420 Freesync, 4k and 120hz (1080p)!

**Unboxing and First Impressions of the LG 42" 4K Monitor**

In this unboxing video, we take a closer look at the LG 42" 4K monitor. Theoretically, this panel supports 3D and several other features, but our experience with the controller suggests that it does not actually implement these features in terms of brightness and uniformity. While the display is noticeably brighter in the middle, the LED backlight is PWM (Pulse Width Modulation) controlled at a very high frequency, making it difficult to notice flicker.

The author's hand movements across the screen demonstrate this effect, as even with slow sweeping motions, the brightness adjustment seems too fast for the human eye to perceive. However, this may be more related to the specific backlight circuitry and panel used rather than the electronics themselves. Another notable aspect of the internal design is the separate USB hub PCB from the USB controller, which should help prevent damage if the phone's power consumption becomes a problem.

**Display Specifications and Performance**

The LG 42" 4K monitor features a native resolution of 3840 x 2160 at 60Hz, with the ability to overclock to 120Hz. While it does natively support up to 75Hz at lower resolutions, this was not possible for our test rig, which used an AMD GPU and Sabertooth X99 controller. The monitor's performance in input lag tests revealed a delay of approximately 25 milliseconds behind the Silicon Graphics monitor, with an additional 10 milliseconds overhead.

**Gaming Performance and Color Accuracy**

In gaming, we observed some minor issues with afterglow, particularly noticeable in the windmill demo. However, the backlight bleed and black uniformity on this monitor are relatively good, considering it's an IPS panel. The blacks are indeed deeper than those on the A399 model, but this may be subjective to individual visual perception. Additionally, the matte finish on the A399 might be a better choice for users who don't care about FreeSync.

**Physical Characteristics and Mounting Considerations**

One significant difference between this monitor and the A399 is its weight, making it potentially too heavy for some mounting solutions. The author notes that they would need to use a wall mount TV mount to secure the monitor safely. Despite these concerns, we're having fun with this display and are looking forward to exploring its capabilities further in the forums at Teex ind.com.

**Technical Details**

For those interested in technical details, the monitor's remote control features a 2D/3D button, but experimentation didn't reveal how it was used. The author also wants to acknowledge that working on NVIDIA support would require some creative coding and might involve using the monitor as a G-Sync panel with some hacking.

**Conclusion**

The LG 42" 4K monitor is an impressive display with excellent color accuracy and good performance. While our experience didn't reveal all of its features, we're excited to continue exploring this monitor's capabilities in the forums. If you're considering purchasing this model, be sure to weigh its weight and mounting requirements before making a final decision.

"WEBVTTKind: captionsLanguage: enfinally we have a cheap monitor from Korea that has pretty much everything that you could possibly want free sync 120 Herz at 1080p 4K native resolution two HDMI 2.0 inputs One display port 1.2 input and more we're going to take a look all right so what we've got here is the Wasabi mango uh UHD 420 now this is the second maybe third version of the UHD 420 it came out of the box with free sync support although um there is an upgrade if you you get yours and there's not a free sync menu thing there's a firmware that you have to install through the service USB port on the back of the monitor this monitor has been on PC perspective with theirs they actually did have to do the firmware upgrade with this one we did not have to now this one shipped with a remote control and some USB cables and some other stuff so let's take a look at the back at the back you've got a 200 mm x 200 mm Visa mount on this particular model some of the older models had a a 400x 400 Visa Mount but the updated version of this is 200 x00 in terms of input ports we've got four HDMI One display port 1.2 one duub we've got audio in and out and a 3 and 12 mm Jack a service USB port that is connected to the LCD controller and then we have USB in and out that are on a separate PCB on the inside that is a USB 3.0 hub for USB in they're using the wrong kind of USB connector but they include a cable so that's not really a big deal although that might be a problem if the included USB cable is not very long you'll have to special order a cable now the big deal with this is that out of the box it can do free sync at least our version could do free sync you got to go into the menus first and enable English that's not really a big deal just go down to this menu over to this thing and then English is an option because otherwise you're going to have problems then the next thing that you want to do is go to the free sync menu and make sure free sync is turned on and if it's not turned on turn it on then once you've got your AMD drivers installed you know verify that free sync is actually working correctly we'll take a look at the benchmarks with that and in just a second but you know you're good to go we also tested the HDMI 1 input which is HDMI 2.0 and with our Nvidia 980 tie we were able to get 444 chroma 60 HZ 4K so that was great now here's the thing this is an LG IPS LCD panel the actual model number is LC 420 eqe pgm1 the version of this panel theoretically supports 3D and a bunch of other things but this controller doesn't actually do it now in terms of brightness and how uniformly bright the display is it is noticeably brighter in the middle of the panel however the uh LED backlight on this is not pwm or if it is pwm it's a very very high frequency pwm so I'm going to shake my hand in front of the screen and we can sort of see that oh yeah it's not actually flickering as I sweep through the brightness getting less bright and more bright if it is pwm it's so fast that I can't see it and the camera shutters having having trouble picking it up and so that's really important to some people if you're looking for quote unquote The flicker-free Experience that's really probably more down to the backlight circuitry and the specific LG panel that we're dealing with more than the electronics but but that's just my experience with this another nice touch on the internals on this is that USB hub PCB is separate from the USB controller I'm always a little bit nervous when the internal PCB control board is actually connected to USB input ports because you know if your phone goes Rogue it could take out the controller at least this way it's just going to take out the USB hub PCB might be a little bit hard on the power supply I didn't look at how the power supply was rated in terms of power consumption now one interesting thing on the remote is that the remote does have the 2D 3D button but experimented a little bit with that and I didn't really have a lot of luck figuring out what that was and so this is just a quick and dirty unboxing video just sort of telling you what you need to know and what you need to know about this monitor is that it's 42 in it's 4K resolution 60 HZ native you can overclock it I was able to overclock it to 120 HZ it does natively support up to 75 htz at the lower resolutions although not 75 HZ at 1080p but I was able to run it at 120 HZ with a 1080p resolution 60 HZ at 4K because there isn't really much on the planet right now that can push 120 htz at 4K so just keep that in mind now for our test rig we're using a sabertooth x99 with the Asus STX 390x this is the Hawaii based AMD GPU although this should work equally well with the fury based gpus no support on Nvidia until somebody hacks the drivers hint hint so if you'd like to work on that head on over to the forums at teex ind.com we can probably make the NVIDIA drivers think that it's a mobile gsync panel with just a little bit of work dot dot dot but that's a story for another time so our control TR board is the Kyon Tech k4500 and so in our input lag tests testing between this and the Silicon Graphics monitor it seems like this is at least one frame behind the Silicon Graphics monitor but there's an additional 10 milliseconds or so overhead so we're talking about a delay from a CRT of about 25 milliseconds give or take so a monitor like an Rog Swift is still going to be you know 15 milliseconds faster than this monitor in terms of responding to a frame on screen but overall that's not really too bad especially when you consider it's IPS panel I do notice in games that there is a little bit of an Afterglow and you can kind of see that a little bit in the windmill demo here but the uh backlight bleed and the black uniformity on this monitor is actually very good it is IPS so you you are going to have a little bit of those kinds of things I think the the blacks are much deeper on the a399 but that's just my own visual perception so keep that in mind it's pretty reflective but not insanely reflective it does have a little bit of a diffuser coating but it's not much and so if you've got really bright stuff behind you you may find that a little Annoying and if you don't care about free sync uh then the matte finish on the a399 may be a better choice for you anyway this display is also much heavier than the a399 which you may have to take into account depending on what your Mounting Solutions are certainly this is going to be too heavy for me to use with a space Co monitor arm but I imagine that I can use a wall mount TV mount and have no problems well I'm having a lot of fun with this Monitor and you should join me in the forums over at Tex ind.com I'm wendle I'm signing out and I'll see you there ohfinally we have a cheap monitor from Korea that has pretty much everything that you could possibly want free sync 120 Herz at 1080p 4K native resolution two HDMI 2.0 inputs One display port 1.2 input and more we're going to take a look all right so what we've got here is the Wasabi mango uh UHD 420 now this is the second maybe third version of the UHD 420 it came out of the box with free sync support although um there is an upgrade if you you get yours and there's not a free sync menu thing there's a firmware that you have to install through the service USB port on the back of the monitor this monitor has been on PC perspective with theirs they actually did have to do the firmware upgrade with this one we did not have to now this one shipped with a remote control and some USB cables and some other stuff so let's take a look at the back at the back you've got a 200 mm x 200 mm Visa mount on this particular model some of the older models had a a 400x 400 Visa Mount but the updated version of this is 200 x00 in terms of input ports we've got four HDMI One display port 1.2 one duub we've got audio in and out and a 3 and 12 mm Jack a service USB port that is connected to the LCD controller and then we have USB in and out that are on a separate PCB on the inside that is a USB 3.0 hub for USB in they're using the wrong kind of USB connector but they include a cable so that's not really a big deal although that might be a problem if the included USB cable is not very long you'll have to special order a cable now the big deal with this is that out of the box it can do free sync at least our version could do free sync you got to go into the menus first and enable English that's not really a big deal just go down to this menu over to this thing and then English is an option because otherwise you're going to have problems then the next thing that you want to do is go to the free sync menu and make sure free sync is turned on and if it's not turned on turn it on then once you've got your AMD drivers installed you know verify that free sync is actually working correctly we'll take a look at the benchmarks with that and in just a second but you know you're good to go we also tested the HDMI 1 input which is HDMI 2.0 and with our Nvidia 980 tie we were able to get 444 chroma 60 HZ 4K so that was great now here's the thing this is an LG IPS LCD panel the actual model number is LC 420 eqe pgm1 the version of this panel theoretically supports 3D and a bunch of other things but this controller doesn't actually do it now in terms of brightness and how uniformly bright the display is it is noticeably brighter in the middle of the panel however the uh LED backlight on this is not pwm or if it is pwm it's a very very high frequency pwm so I'm going to shake my hand in front of the screen and we can sort of see that oh yeah it's not actually flickering as I sweep through the brightness getting less bright and more bright if it is pwm it's so fast that I can't see it and the camera shutters having having trouble picking it up and so that's really important to some people if you're looking for quote unquote The flicker-free Experience that's really probably more down to the backlight circuitry and the specific LG panel that we're dealing with more than the electronics but but that's just my experience with this another nice touch on the internals on this is that USB hub PCB is separate from the USB controller I'm always a little bit nervous when the internal PCB control board is actually connected to USB input ports because you know if your phone goes Rogue it could take out the controller at least this way it's just going to take out the USB hub PCB might be a little bit hard on the power supply I didn't look at how the power supply was rated in terms of power consumption now one interesting thing on the remote is that the remote does have the 2D 3D button but experimented a little bit with that and I didn't really have a lot of luck figuring out what that was and so this is just a quick and dirty unboxing video just sort of telling you what you need to know and what you need to know about this monitor is that it's 42 in it's 4K resolution 60 HZ native you can overclock it I was able to overclock it to 120 HZ it does natively support up to 75 htz at the lower resolutions although not 75 HZ at 1080p but I was able to run it at 120 HZ with a 1080p resolution 60 HZ at 4K because there isn't really much on the planet right now that can push 120 htz at 4K so just keep that in mind now for our test rig we're using a sabertooth x99 with the Asus STX 390x this is the Hawaii based AMD GPU although this should work equally well with the fury based gpus no support on Nvidia until somebody hacks the drivers hint hint so if you'd like to work on that head on over to the forums at teex ind.com we can probably make the NVIDIA drivers think that it's a mobile gsync panel with just a little bit of work dot dot dot but that's a story for another time so our control TR board is the Kyon Tech k4500 and so in our input lag tests testing between this and the Silicon Graphics monitor it seems like this is at least one frame behind the Silicon Graphics monitor but there's an additional 10 milliseconds or so overhead so we're talking about a delay from a CRT of about 25 milliseconds give or take so a monitor like an Rog Swift is still going to be you know 15 milliseconds faster than this monitor in terms of responding to a frame on screen but overall that's not really too bad especially when you consider it's IPS panel I do notice in games that there is a little bit of an Afterglow and you can kind of see that a little bit in the windmill demo here but the uh backlight bleed and the black uniformity on this monitor is actually very good it is IPS so you you are going to have a little bit of those kinds of things I think the the blacks are much deeper on the a399 but that's just my own visual perception so keep that in mind it's pretty reflective but not insanely reflective it does have a little bit of a diffuser coating but it's not much and so if you've got really bright stuff behind you you may find that a little Annoying and if you don't care about free sync uh then the matte finish on the a399 may be a better choice for you anyway this display is also much heavier than the a399 which you may have to take into account depending on what your Mounting Solutions are certainly this is going to be too heavy for me to use with a space Co monitor arm but I imagine that I can use a wall mount TV mount and have no problems well I'm having a lot of fun with this Monitor and you should join me in the forums over at Tex ind.com I'm wendle I'm signing out and I'll see you there oh\n"