Read our detailed article about input lagand the various measurement techniques which are used to evaluate this aspect of a display. The screens tested are split into two measurements which are based on our overall display lag tests and half the average G2G response time, as measured by our oscilloscope. The response time element, part of the lag you can see, is split from the overall display lag and shown on the graph as the green bar. From there, the signal processing (red bar) can be provided as a good estimation of the lag you would feelfrom the display. We also classify each display as follows:

Decent enough contrast ratio for an IPS technology panel close to spec and better than other Nano IPS panels we’ve tested before, although still not as high as you can get from VA panels of course With IPS 1ms comparable to TN Speed, providing the minimised afterimage and a fast response time, lets you to enjoy a whole new gaming performance. The 27GN950 supports hardware calibration where you can programme the hardware LUT (Look Up Table) and negate the need for ICC profiles and colour management within your applications. This can save the calibration to the screen itself which means the settings are saved for all your applications and uses, and should in theory also give you a more accurate result, with better control of the hardware itself. This can also help retain contrast, tonal values and ensure gradients remain smooth as corrections are carried out at the hardware level, and not at the graphics card level.We've retested the refresh rate, response time at max refresh rate, and the input lag with the latest firmware.

Information about the number of pixels on the horizontal and vertical side of the screen. A higher resolution allows the display of a more detailed and of higher quality image.

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Expand your point of view with LG monitors that adapt to the needs of business users, gamers, graphic artists and multimedia enthusiasts alike. Discover computer monitors with slim designs, striking color and life-like motion for an optimal viewing experience. Luminance– we aim for 120cd/m 2, which is the recommended luminance for LCD monitors in normal lighting conditions We also measured the screen after adjusting only the OSD controls, to obtain the optimal setup without a full calibration, and without the use of an ICC correction profile. This represents what could be achieved through just simple changes to the monitor itself, and also what you could expect when working with content outside of an ICC profile managed workflow. The early stages of our calibration software helped identity these optimal OSD settings.

Perhaps unsurprisingly the performance of the 27GN950 was very similar to the LG 27GL850 in terms of response times, refresh rate support and motion clarity. The 27GN950 obviously offers 4K resolution and some other features, whereas the 27GL850 was “only” 1440p, but the Nano IPS panels performed very similarly when it came to these other areas. A very solid performance here. It did perform better than the Asus ROG Strix XG270UQ (which also offered 4K resolution, 144Hz refresh rate and uses DSC to avoid colour sacrifice). That model had an average 6.8ms G2G response time and couldn’t keep up as well with the refresh rate demands.Naturally, LG adds some RGB bling for good measure, but unlike MSI’s curved 34in Optix MPG341CQR, which included a strip of lights on the front, the LG supplies its LEDs as a colour ring at the rear. Information about whether the stand can be dismounted. Usually, this is required for wall mounting. With FreeSync™ Premium Pro technology, gamers can experience seamless, fluid movement in hi-resolution and fast-paced games, It virtually reduces screen tearing and stuttering. We did notice that running any non-native resolution looked more blurry than in SDR mode, and we lost the really good sharpness we had commented on in the office section of this review. At 1440p the text looked more fuzzy in HDR mode with no obvious way to correct it. Running at 4K was fine though of course, but perhaps the scaler doesn’t handle non-native resolutions quite as well in HDR mode as it does in normal SDR mode. Luminance uniformity of the screen was very good on our sample, with all of the screen within a 10% deviance of the centrally calibrated area which was pleasing. The bottom area was slightly brighter than the top, and it dipped a little in the upper corners but not by anything major or noticeable.