The LG 27GP950-B is a 27 inch 4k monitor with a fast 160Hz refresh rate. It's part of LG's UltraGear lineup of gaming monitors and is the first LG monitor we've tested with HDMI 2.1 support, making it a great choice for next-gen console gamers. It delivers an impressive gaming experience with low input lag, a fast response time, and support for both NVIDIA and FreeSync Premium Pro variable refresh rate technology. Unfortunately, it has disappointing reflection handling, and like most IPS monitors, it's not a great choice for a dark room, as it has low contrast and poor black uniformity.
The LG 27GP950 is a great monitor for most uses. The large, high-resolution screen is great for office use or media creation, and it has a superb color gamut in SDR and incredible gradient handling. It's an impressive gaming monitor with low input lag and a fast response time. It's also good for gaming in HDR, with an impressive HDR color gamut and very good peak brightness.
The LG UltraGear 27GP950 is a very good monitor for office use. The high-resolution screen delivers outstanding text clarity, and it has excellent gray uniformity. It has wide viewing angles, great if you often share your screen, but the stand can't swivel. Unfortunately, it has disappointing reflection handling, but it's still bright enough to overcome glare in most viewing conditions.
The LG 27GP950 is an impressive gaming monitor. It has a fantastic response time at the max refresh rate and low input lag for a responsive gaming experience. It supports both FreeSync and G-SYNC variable refresh rates, ensuring a nearly tear-free gaming experience from almost any source. It also has two HDMI 2.1 ports, making it a great choice for next-gen console gamers.
The LG 27GP950-B is a very good monitor for watching videos. The large, high-resolution screen delivers a more immersive movie-watching experience, and the wide viewing angles are great for watching videos with a few friends. Unfortunately, it doesn't look as good in a dark room due to its low contrast ratio and poor black uniformity.
The LG 27GP950 is a great monitor for media creation. The large, high-resolution screen makes it easier to see more of your workflow at once, and the wide viewing angles are great if you often share your screen. It has a superb color gamut in SDR, including excellent coverage of the Adobe RGB color space, and it has incredible gradient handling. Unfortunately, it has low contrast and poor black uniformity, and the stand can't swivel.
The LG UltraGear 27GP950 is a good monitor for gaming in HDR. It's an impressive gaming monitor, with low input lag and a fast response time. It has an impressive color gamut in HDR and very good peak brightness, so bright highlights stand out. Unfortunately, it has low contrast and a terrible local dimming feature, so it can't deliver a very impactful HDR experience overall.
The LG UltraGear 27GP950 has a very similar style to the other 2021 LG UltraGear monitors. The chevron-shaped stand is pretty wide but doesn't take up a ton of space, and it supports the monitor fairly well. There's a ring of RGB bias-lighting on the back of the monitor, which can be synced with video or audio playing on your PC.
The stand is wide but doesn't take up a lot of space, so you can still place other things in front of the monitor. The stand supports the monitor well but wobbles a bit, especially at the maximum height extension.
Unfortunately, the LG 27GP950 has limited ergonomics. It has a decent height adjustment and an okay tilt range, so you shouldn't have any difficulty placing it in an ideal viewing position, but it can't swivel and can only rotate to portrait orientation in one direction, so the inputs will always be on the top.
The back of the LG 27GP950 is pretty plain overall. There's a ring of RGB bias-lighting, which LG calls Sphere Lighting 2.0. You can sync the lighting with audio or video from your PC. You can also customize it yourself through LG's software or the physical wheel on the bottom of the monitor. There's a ring of vents around the bias-lighting ring, and there's a fan built-in. We couldn't hear it in our lab unless we were right next to it, but if you're in a really quiet environment, it might be audible. There's a hook on the back of the display for cable management, but it's not very effective overall.
The borders are extremely thin, making this a great choice for a multimonitor setup.
The LG 27GP950 has decent build quality overall, very similar to the other UltraGear monitors we've tested. It's almost entirely plastic, and there's some flex on the back, but nothing concerning. The stand is fairly stable, but as you increase the height extension there's more and more wobble. There's a fan in the back panel to help with heat dissipation, we couldn't really hear it unless we were right next to it, but it might be audible in really quiet rooms.
As expected for an IPS monitor, the LG 27GP950 has mediocre contrast, and blacks look gray in a dark room. This can vary between units, and these results are slightly better than most IPS monitors we've tested. Unfortunately, the local dimming feature is ineffective at boosting contrast with our checkerboard pattern due to the large zone size.
Unfortunately, although the LG 27GP950-B has a local dimming feature, it's terrible. It has about 16 zones, so each zone covers a relatively large area of the screen. Due to the large size, any object on the screen causes an entire column of the screen to light up, resulting in significant blooming. With most real content, this isn't that noticeable, as all zones are usually lit up. On the other hand, there's absolutely no black crush, with no loss of fine details in some scenes.
The speed of the local dimming feature can be adjusted between three different settings. We did our testing with it set to 'Faster', as this mode delivers the best results with fast-moving objects, but the zone transitions are quite noticeable and can be jarring in some cases. Lower settings average out the backlight across more zones, so this isn't as noticeable, but the local dimming feature isn't as noticeable or effective then.
The LG UltraGear 27GP950 has great peak brightness in SDR, and it's bright enough to overcome glare in most bright rooms, despite its disappointing reflection handling. Unfortunately, with local dimming enabled the monitor dims our 25% window briefly. This isn't noticeable with regular content, and even with our test pattern, it returns to normal quickly. With local dimming disabled, there's almost no variation in brightness with different scenes or over time, and all scenes are around 400 cd/m².
We measured the SDR peak brightness after calibration in the 'Gamer 1' Picture Mode with Brightness set to max, and Local Dimming set to 'Faster'.
The LG 27GP950-B has very good peak brightness in HDR. It's bright enough to deliver an impactful gaming experience in HDR, and it's bright enough for some video content, but small bright highlights aren't as bright as they should be. It also can't maintain a high brightness level with large, bright scenes, and there's a significant decrease in brightness over time, but this shouldn't be very noticeable with most real content.
We measured the HDR peak brightness in the 'Gamer 1' Picture Mode with HDR enabled, Local Dimming set to 'Faster', and Brightness set to max.
As expected for an IPS panel, the LG 27GP950-B has a good horizontal viewing angle. If you're sitting off to the side, the image can appear washed out, but when sitting close to the screen, the sides remain uniform.
The LG 27GP950 has a very good vertical viewing angle. The image appears a bit washed out at a moderate angle, but this shouldn't cause any issues for most people.
The LG 27GP950 has excellent gray uniformity. The sides of the screen are a bit darker than the center, but there's very little dirty screen effect in the center. Gray uniformity can vary between individual units, but it's rarely an issue on recent monitors.
Unfortunately, the LG 27GP950 we bought has poor black uniformity, but this can vary between units. The screen is cloudy throughout, and there are patches of backlight bleed in all four corners. Sadly, local dimming does very little to improve black uniformity.
The LG 27GP950-B has great accuracy out of the box. Although this can normally vary between units, this monitor comes partially factory calibrated, so we don't expect much variation between units. Even in the sRGB mode, gamma is closer to a flat 2.2 instead of the sRGB target curve, so bright scenes are a bit too bright, and dark scenes are slightly darker than they should be. White balance is a bit off, but most colors are displayed accurately. The color temperature is a bit warm, giving everything a slightly reddish tint.
The LG 27GP950-B has outstanding accuracy after calibration. Gamma follows the sRGB gamma curve fairly well, but some scenes are still a bit off. Colors and white balance are nearly perfect, and any remaining issues aren't noticeable without a colorimeter.
You can download our ICC profile calibration here. This is provided for reference only and shouldn't be used, as the calibration values vary per individual unit due to manufacturing tolerances, even for the same model.
The LG UltraGear 27GP950 has a superb SDR color gamut. It can display the entire sRGB color gamut used by most current desktop and web content. It also has excellent coverage of the wider Adobe RGB color space but falls short on greens especially.
This monitor has fantastic SDR color volume. It can display the entire range of sRGB colors at most luminance levels, but due to the low contrast ratio, it can't display dark saturated colors very well.
The LG 27GP950-B has an impressive HDR color gamut. It has nearly perfect coverage of the DCI P3 color space used by most current HDR content. It also has decent coverage of the wider Rec. 2020 color space.
This monitor has great color volume in HDR. It's limited mainly by the incomplete color gamut, but most colors are as bright as pure white. Unfortunately, it can't display dark saturated colors very well, due to the low contrast ratio.
There are no signs of temporary image retention on our monitor, but this can vary between units.
The LG 27GP950 has incredible gradient handling. There are almost no signs of banding in any shade.
There are no noticeable signs of color bleed on our LG 27GP950. This can vary between individual units, but it's rarely noticeable, even on units that perform poorly in our test.
Unfortunately, the LG 27GP950 has disappointing reflection handling. Bright lights can be distracting, but it's bright enough to overcome most glare.
The LG 27GP950 has outstanding text clarity. Running the ClearType wizard helps clean up diagonal lines (top photo), but it still looks good in apps that don't support ClearType.
|Response Time Setting||Response Time Chart||Response Time Tables||Motion Blur Photo|
The LG 27GP950 has a fantastic response time at the max refresh rate of 160Hz. Like most monitors, the pixel overdrive can be adjusted, but we recommend the 'Normal' setting. Higher settings have a slightly faster rise/fall time, and only the 'Faster' setting achieves the advertised 1ms response time, but there's more overshoot in higher modes. 'Fast' is very similar to 'Normal', and some people might prefer it, as the overall response time is a bit faster, and there's very little noticeable overshoot. Unfortunately, 'Faster' is borderline unusable due to the amount of overshoot.
|Response Time Setting||Response Time Chart||Response Time Tables||Motion Blur Photo|
The LG 27GP950-B has a superb response time at 60Hz. The various Response Time settings behave very similarly to the max refresh rate, which is great, as you don't have to worry about adjusting the setting if you change refresh rates. There's a bit more noticeable overshoot in the 'Fast' mode than at the max refresh rate, especially in dark scenes, so 'Normal' is a safer choice for most people.
The backlight is completely flicker-free at all backlight settings, which is great, as it can help reduce eye strain during longer gaming sessions.
Note: There are a few reports online of random black screens while gaming, usually with VRR enabled. We've tried to reproduce this issue on our unit but weren't able to. It seems to vary between units and possibly indicates a defective unit.
Unfortunately, the LG 27GP950 doesn't have an option to introduce backlight strobing to improve motion clarity.
The LG 27GP950-B has an extremely fast refresh rate and an optional overclock. The overclock can only be enabled if Adaptive Sync is enabled, which is a bit strange. Over HDMI 2.1, the max refresh rate is 120Hz, and DisplayPort requires a graphics card that supports DSC 1.2a.
This monitor supports AMD's FreeSync Premium Pro variable refresh rate technology, but it's also certified to work with recent NVIDIA graphics cards over both HDMI and DisplayPort.
The LG 27GP950 has remarkable low input lag, resulting in a very responsive gaming experience. Enabling VRR causes a very slight increase in input lag, but it's not noticeable.
We encountered a strange issue during testing. For the overclock to work properly, Adaptive Sync has to be enabled in the OSD and on your PC. With VRR disabled on the PC, the monitor appears to actually be running at 80Hz and doubling every frame. This issue is only noticeable at the max refresh rate, even with the overclock enabled. The issue isn't there at a lower refresh rate, even if the overclock is still enabled. Running the overclock with VRR disabled causes the input lag to increase to 7.8ms.
The LG 27GP950-B has a large, high-resolution screen that's great for multitasking. It has a very high pixel density that delivers a sharp image with very clear text.
The LG UltraGear 27GP950 has two HDMI 2.1 ports, making it a great choice for next-gen console gamers. Although we don't currently test for console compatibility, due to the rarity of HDMI 2.1 monitors, we decided to check it with this one:
We also checked the bandwidth of the HDMI 2.1 ports. Unlike the Gigabyte M28U and the other HDMI 2.1 monitors we tested, which are limited to 24Gbps, this monitor has two 48Gbps ports, so it doesn't require compression to support the higher bandwidth formats. The most noticeable difference is that 4k @ 120Hz 4:2:2 is supported on the PS5, unlike the Acer Nitro XV282K KVbmiipruzx, which is limited to 4:2:0 on the PS5.
The LG 27GP950-B comes with a few extra features, including:
The LG 27GP950 has a very similar interface to the other LG monitors we've tested recently. You can navigate most of the on-screen display using the joystick located under the bottom bezel of the monitor.
There's also a wheel controller that you can use to adjust the backlight setting. Note that some of the backlight settings require the LG Ultra Control Center software on your computer, and the monitor must be connected to your computer with the USB upstream cable (included) for the control software to work.
The joystick control under the front bezel of the monitor is used to navigate the OSD. There's also a jog wheel and switch that's used to adjust the RGB bias-lighting feature.
We tested the LG 27GP950-B 27 inch gaming monitor, which is part of LG's UltraGear gaming lineup and is the only one with HDMI 2.1. There are many other monitors in LG's UltraGear lineup with various configurations, some of which you can see in the table below. As they each have different specs, we don't expect our review to be valid for any of the other models.
|Model||Size||Panel Type||Resolution||Max Refresh Rate|
|34GP950G||34"||IPS||3440 x 1440||180Hz|
|34GP83A-B||34"||IPS||3440 x 1440||160Hz|
|32GP850-B||32"||IPS||2560 x 1440||180Hz|
|27GP950-B||27"||IPS||3840 x 2160||160Hz|
|27GP850-B||27"||IPS||2560 x 1440||180Hz|
If someone comes across a different type of panel or their LG 27GP950-B doesn't correspond to our review, let us know and we'll update the review. Note that some tests, like gray uniformity, may vary between individual units.
Our unit was manufactured in July 2021; you can see the label here.
The LG 27GP950-B is an impressive gaming monitor, and one of the few currently available that support HDMI 2.1, making it an especially great choice for console gamers. It doesn't stand out much for PC gamers, though, so if you're not interested in console gaming, there are better choices available.
The Gigabyte M28U is slightly better than the LG 27GP950-B overall, but some people might prefer the LG. The Gigabyte has much better reflection handling, so glare isn't as distracting in a bright room, and it has an optional backlight strobing feature. On the other hand, the LG has a faster refresh rate and better motion handling with 60Hz sources. The LG's HDMI 2.1 ports support the full bandwidth of HDMI 2.1, so it's also a slightly better choice for PS5 gamers.
The LG 27GP950-B is a bit better than the Gigabyte M27Q for most uses. The LG has a higher resolution screen and much better text clarity, so it's a bit better for media creators or office use. The LG also has two HDMI 2.1 ports, making it a better choice for PS5 or Xbox Series X gamers. On the other hand, the Gigabyte has better reflection handling and an optional backlight strobing feature.
The LG 27GP950-B is slightly better than the LG 27GN950-B. The 27GP950-B has two HDMI 2.1 ports, so it's a better choice for PS5 or Xbox Series X gamers. The 27GP950-B is also a lot brighter in real scenes in HDR, and it has a much better HDR color gamut, with significantly better DCI P3 coverage.
The Acer Nitro XV282K KVbmiipruzx is a bit better than the LG 27GP950-B. The Acer has much better ergonomics, an optional backlight strobing feature, and much better reflection handling. On the other hand, the LG has a faster refresh rate and better motion handling with 60Hz sources. The LG's HDMI 2.1 ports support the full bandwidth of HDMI 2.1, so it's also a slightly better choice for PS5 gamers.