LG 68cm/27'' (3840x1600) UltraGear 27GN950-B Gaming Curved 144Hz 16:9 1ms 2xHDMI DisplayPort USB VESA UWQHD+ Black Red

Product Information

Viewing angles of the screen were very good as you would expect from an IPS panel. Horizontally there was very little colour tone shift until wide angles past about 45°. A slight darkening of the image occurred horizontally from wider angles as you can see above as the contrast shifted slighting. Contrast shifts were slightly more noticeable in the vertical field but overall they were very good. The screen offered the wide viewing angles of IPS technology and was free from the restrictive fields of view of TN Film panels, especially in the vertical plane. It was also free of the off-centre contrast shift you see from VA panels and a lot of the quite obvious gamma and colour tone shift you see from some of the modern VA panel type offerings. The operating humidity shows the acceptable level of humidity, in which the display will function flawlessly. It sets a lower and an upper humidity level for safe operation and is measured in percentage. The storage temperature shows the range from a minimum to a maximum temperature, within which storing of the display is considered to be safe. 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.

We should note here that when we first tested this feature we saw an issue, flagged to us by some readers, where the hardware calibration would not be properly saved to the screen after a reboot of display power off. We spoke to LG about this who confirmed that they were issuing a new firmwarefor the screen to fix this problem. We had chance to test that firmware early and it did indeed fix the issue. Hardware calibrations are now properly stored and remembered. Setup Comparisons Discover a richer, brighter, more detailed online experience. With an in-place switching IPS monitor, you can experience stunning images from any angle. 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

A Comfortable and Customized Workstation

The OSD settings were adjusted as shown in the table above, as guided during the calibration process and measurements. These OSD changes allowed us to obtain an optimal hardware starting point and setup before software level changes would be made at the graphics card level. We left the LaCie software to calibrate to “max” brightness which would just retain the luminance of whatever brightness we’d set the screen to, and would not in any way try and alter the luminance at the graphics card level, which can reduce contrast ratio. These adjustments before profiling the screen would help preserve tonal values and limit banding issues. After this we let the software carry out the LUT adjustments and create an ICC profile. 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. Preset Modes –There are quite a few gamer-oriented modes available in the ‘picture mode’ preset mode menu including FPS and RTS modes. There are also two customisable user modes called Gamer1 and Gamer2. So it should be easy to set the screen up to your liking for different uses if you want. We have plotted the luminance trend on the graph above. The screen behaves as it should in this regard, with a reduction in the luminance output of the screen controlled by the reduction in the OSD brightness setting.

Touchscreen Monitors: Enable touch input, common in interactive kiosks and certain design or educational applications.We reviewed the 27 inch LG 27GN950-B, which is the only size available forthis model. There are other models in LG's UltraGear lineup, some of which are listed below. Dimensions, weight and color Information about the dimensions and the weight of the specific model with and without stand as well as the colors, in which it is offered to the market. Width Color is always in the P3 gamut, regardless of picture mode. Selecting sRGB reduces saturation a little but not enough to qualify as a true sRGB monitor. We also lowered Contrast a little to improve gamma and fix a red clipping issue at 100% brightness. Note that any change to gamma requires recalibration of the white point. Added text to the macOS and Response Time boxes as part of Test Bench 1.2, and updated the text for accuracy throughout.

More recently some 4K @ 144Hz displays like the Asus ROG Strix XG27UQwhich we tested in April 2020 worked around this bandwidth limitation by making use of VESA’s Display Stream Compression (DSC) technology, a visually lossless solution available from modern graphics cards that allows you to make full use of the resolution and refresh rate without needing to drop colour depth or chroma. This seemed to work very well and provides an excellent way to boost the capability of existing DisplayPort 1.4 connections for these kind of screens. 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. The total lag measured was a very impressive 2.75ms total. The pixel response times account for around 2.5ms, and so we can say that there appears to be around 0.25ms of signal processing lag on this screen which is super low. A solid result from this display and making it suitable for fast and competitive gaming. Approximate width of the display. If the manufacturer does not provide such information, the width is calculated from the diagonal and the aspect ratio.

Why is LG UltraGear 27GP950-B 27" better than LG UltraGear 27GN950-B?

Thanks to the IPS panel technology, suitable for viewing from a wide range of positions. Pale IPS glow on dark content could present a problem from some wider angles especially in darker room conditions OLED Monitors: Organic LEDs provide excellent color accuracy and contrast, often found in high-end displays. Approximate diagonal size of the display. If the manufacturer does not provide such information, the diagonal is calculated from the width and height of the screen.

Contrast ratio (static)– we aim for as high as possible. Any dynamic contrast ratio controls are turned off here if present 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. Ergonomics Information about the ergonomic functions - height adjustment, swivel angles, tilt angles, etc. VESA mount Information about whether there is a possibility for wall mounting according to the VESA Mounting Interface Standard (MIS).

G-SYNC® Compatible Validated by NVIDIA

Information about the minimum amount of time, in which the pixels change from one color to another. Very often the manufacturer provides the response time for transition from grey-to-grey (G2G). This has helped correct the white point to 6555k and reduce the brightness to a much more comfortable level. The contrast ratio was improved a bit but remained very close to the default setup and the manufacturers spec of 1000:1. These optimal settings helped the screen look a bit better than out of the box, certainly helping with the brightness if nothing else. Further calibration and profiling below can help improve things a bit further. Calibration