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ASUS ROG Strix 27" 4K HDR DSC Gaming Monitor (XG27UQ) - UHD (3840 x 2160), IPS, 144Hz, 1ms, Adaptive-Sync, G-SYNC Compatible, DisplayHDR 400, 90% DCI-P3, Aura Sync, VESA Mountable, DisplayPort,

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Luminance– we aim for 120 cd/m 2, which is the recommended luminance for LCD monitors in normal lighting conditions Information about the brightness of the screen. It is measured in candela per square metre (cd/m²). Viewing angles of the screen were very good as you would expect from an IPS-type 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. Update 24/4/20– we have now managed to complete our testing using a modern NVIDIA RTX 2070 Super graphics card, that supports DSC. There was nothing specific to enable from the drivers or software, we were now just able to select 3840 x 2160 resolution and run at 144Hz, 10-bit colour depth and full RGB straight away. We were pleased that there was no visual loss to our eyes and in our range of tests which was excellent. You can certainly see chroma sub-sampling when you use that old method especially in desktop applications, but that was not necessary now that DSC was being used. We saw now additional lag either when using this and no noticeable side-effects. This seemed to work very nicely to allow you to squeeze more out of the bandwidth of DisplayPort 1.4, Response Times and Refresh Rate Information about the average amount of time, in which the pixels change from one color to another.

Class 3) A lag of more than 16.66ms – the equivalent of more than 2 frames at a refresh rate of 120Hz – Some noticeable lag in daily usage, not suitable for high end gaming Good range of adjustments suitable to positioning the screen in a variety of angles for different viewing positions. All pretty easy to move around. HDR signals cannot be calibrated, but you can choose from two HDR modes, Gaming and Cinema, that look and measure similarly. Gaming and Hands-on The SpyderX includes a suite of other tests to assess a monitor’s performance. As you can tell from the report above, the XG27UQ did very well, with the only shortcomings being its white point (6800K vs 6500K) and luminance uniformity where the corners and edges proved to be about 10-12% less bright than the center. This result is reportable but is difficult to notice in normal use, especially while gaming due to the motion on the screen.

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. When deciding whether or not a monitor is best paired with the Series X, we typically use a wide variety of games to put specs, design, features, and performance to the test. That includes releases that support 4K 120Hz, but we also like to run adventures across a variety of genres to analyse fidelity and determine whether a model is good value for money. You've not got a lot of room: AOC's monitor is a bit of a chonk, so you'll need to free up some room at your desk to make it fit. Adobe RGB (1998) is a color space, developed by Adobe Systems in 1998. It has a wider gamut than the sRGB (mainly in the cyan-green range of colors) and is widely used in professional printing. Desktop monitors and smart TVs experience a latency/lag in visualizing the information. The time in milliseconds that the display needs to visualize the signal input.

Luminance uniformity of the screen was only moderate on our sample, with 57% of the screen within a 10% deviance of the centrally calibrated area. The sides were a bit darker with the left hand edge showing the most significant variation, dropping down by 24% in the most extreme example. Features: The Xbox Series X can't match the Xeneon 27QHD240's 240Hz capabilities with an appropriate frame rate, but don't let that fact distract you, as we're here for the OLED this time. Corsair's choice of LG panel really stands out from the crowd, producing vivid colors that help it stand out in the crowded gaming monitor market.Of course the main thing we want to test is what improvements the Blur Reduction mode offers when it comes to motion clarity and gaming. The following pursuit camera photos give you an indication of observed motion clarity as the human eye would see it at the top, middle and bottom areas of the screen. Also, there are dynamic dimming / auto contrast ratio features which could potentially be useful in limited scenarios if you don’t care about color accuracy and want to maximize brightness. I believe they are forced on for HDR. But you will probably not care at all.

Update 01/18/2022: We discovered that the monitor doesn't have proper Picture-in-Picture and Picture-by-Picture modes. You can use the Multiframe option in the ASUS DisplayWidget software to display windows side-by-side, but they need to be from the same source, and you can't display images from two sources. The stand offers a full range of ergonomic adjustments. Tilt provides a decent range of adjustment and is smooth and reasonably easy to operate, perhaps a little stiff. Height is smooth and easy, and provides a wide adjustment range as well. At the lowest setting the bottom edge of the screen is 50mm from the desk. At maximum extension it’s 170mm which provides a decent 120mm adjustment range for the height adjustment as advertised. Side to side swivel and even the rotation function are smooth and easy to position. The screen remains very stable when you are moving it around thanks to the solid and sturdy base. For the record, Acer says it will also run at 120Hz at 1440p on the Xbox Series X, giving you the option to step down the resolution in return for more speed and response. That makes this panel suitable for twitchy online shooters like Fortnite, while the sheer scale and punch of the VA panel is also a good fit for graphics fests like Assassin's Creed: Valhalla.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. There is a steeper adjustment curve for settings of 50 and below as you can see. It can accept an HDR input source, but is only certified to the rather meaningless HDR 400 standard which does not require any form of local dimming and so cannot offer improved dynamic range/contrast. There is some improvements on the colour side of things for HDR content with the wide colour gamut (95% DCI-P3) and 10-bit colour depth It is worth noting that panel uniformity can vary from one screen to another, and can depend on manufacturing lines, screen transport and other local factors. This is only a guide of the uniformity of the sample screen we have for review. You don't need a 4K monitor or TV to use the Xbox Series X, as it'll happily output 1440p and 1080p. Since it can output UHD, it makes sense to pair the console with a higher resolution panel, especially if you're into cinematic experiences. However, your games will still look great at lower resolutions, and investing in other things like an OLED display could be more beneficial. Is a 4K monitor worth it for Xbox Series X? Graphics card settings were left at default with no ICC profile or calibration active. Tests were made using an X-rite i1 Display Pro Plus colorimeter. It should be noted that we used the BasICColor calibration software here to record these measurements, and so luminance at default settings may vary a little from the LaCie Blue Eye Pro report you will see in other sections of the review.

Before you get too worried about this though, in practice the performance was still very good. There was a little bit of added smearing on moving content because the response times weren’t fast enough to always keep up with the frame rate, but with a high 144Hz refresh rate the motion clarity was still very good. Had the response times been a bit faster and more consistent (without overshoot still), then the motion clarity could have been improved slightly further but it was still decent here. The PG27UQ for instance which has variable overdrive thanks to the Native hardware G-sync module and achieves response tiems which are more within the threshold, so looks slightly sharper in practice as a result. Motion Blur Reduction (ELMB mode)There are some blue light filter settings available in the OSD menu with settings from 1 – 4. Each one gets slightly warmer than the last, with the maximum setting of 4 delivering a warmer white point of around 5004k and reducing the blue spectral peak a bit as shown above. 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. The coating is a little grainy and this is noticeable on pure colors! You can kinda see the texture come through, a bit more than I’d like. Not a huge deal though. The screen does come with a factory calibration and a report is included in the box. A copy of the report from our sample is included below. It’s not 100% clear for which mode this applies, as in one place it mentions it is for “SDR mode / Racing mode” which is one of the wide gamut modes, but then in another it states that the colour accuracy is relative to sRGB – which is a problem if you’re working with wide colour gamut output. We believe this factory calibration is more likely to apply to the sRGB preset mode as per our measurements below, but either way we will measure both the default Racing mode, and the sRGB emulation mode: The materials were of a decent standard and the build quality felt good. There was no audible noise from the screen, even when conducting specific tests which can often identify buzzing issues. The whole screen remained cool even during prolonged use.

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