There’s a certain precision and fluidity that’s simply lacking at lower refresh rates. Which is what would happen if you digitally alter saturation, for example by using Nvidia Digital Vibrance or increasing ‘Game Color’ in the monitor OSD. There was also some eye-catchingly colourful painted artifacts and suchlike. The monitor includes a variety of ‘Game Mode’ image presets; ‘FPS’, ‘RTS’, ‘Racing’, ‘Gamer 1’, ‘Gamer 2’ and ‘Gamer 3’. You can either configure this globally under ‘Global Settings’ or for each game individually. We explore this later. The deviation between each quadrant and the quadrant closest to the 6500K (D65) daylight white point target was analysed and a DeltaE value assigned. ... 24G2. This supports a 144Hz refresh rate and 8-bit colour. However; ‘Strong’ is the only usable setting. The final section of the video shows a dark desktop background and highlights ‘IPS glow’ mentioned earlier. The images below show pursuit photographs running from the top to bottom regions of the screen, with the screen set to 144Hz and ‘MBR = 15’. There was no real overshoot to speak of on this model. PositivesNegativesVibrant and varied colour output straight from the box with a generous colour gamut and fairly strong colour consistencyThe sRGB emulation mode lacks brightness adjustment and is locked at moderately high brightnessPleasing contrast for the panel type and a relatively smooth screen surface finish, delivering a decent atmosphere for darker scenes and fairly smooth-looking lighter shades‘IPS glow’ ate away at some detail peripherally and the minimum luminance is quite high, which could be problematic for sensitive usersLow input lag, well-tuned pixel overdrive at up to 144Hz and Adaptive-Sync doing its thing on both AMD and Nvidia GPUs to reduce stuttering and tearingSlight weaknesses for some pixel responses, optimal pixel overdrive setting for ~60Hz and significantly higher frame rates differs (no variable overdrive) and fairly high strobe crosstalk when using the MBR settingQuite a feature-rich OSD, good ergonomic flexibility, very slender top and side bezels and competitive pricingThe Full HD resolution is quite limiting in some respects, although a higher resolution would demand a significant price premium and is harder to driveAs an Amazon Associate I earn from qualifying purchases made using the below link. We used this monitor whilst playing a variety of game titles, with FreeSync active. In the central region of the screen the strobe crosstalk becomes somewhat stronger and there’s essentially another repetition of the object as you move further down again. AMD FreeSync Premium technology and HDR-like visual reduces screen tearing allows gamers to immerse in the battle with high contrast visual clarity. Our test system runs Windows 10 and an Nvidia GTX 1080 Ti connected via the supplied DP cable. This effect was extremely subtle and most users will not notice it or find it bothersome if they do. This overshoot is not as strong or eye-catching as at 60Hz and has a rather blended appearance overall. Some game engines will also show stuttering (or ‘hitching’) for various other reasons which won’t be eliminated by the technology. This significantly affected motion clarity and nullified the key advantage of the MBR setting to a fair extent (lower perceived blur). So far the high refresh rate options have centred around either TN models, built for speed, or VA models offering strong contrast and some improvements in colour handling at the expense of responsiveness. Donations are also greatly appreciated. Sensitivity to tearing and stuttering varies, so when we say obvious we mean to us and other sensitive users, but having FreeSync get rid of such imperfections was very pleasant for us. The table below shows white point and gamma readings taken using a Datacolor SpyderX Elite colorimeter, using various OSD settings, alongside general observations on the image. 92% DCI-P3 colour space coverage was recorded by our colorimeter. The environments appeared vivid with moderately high saturation levels, but varied at the same time and not completely unnatural and cartoonish. Ensure the ‘Enable G-SYNC, G-SYNC Compatible’ checkbox and ‘Enable settings for the selected display model’ is checked as shown below. There is just a light ‘misty’ graininess, no ‘smeary’ graininess nor a sandy appearance. At 60Hz, shown above, the UFO appears fairly broad and softly focused, without clear internal detailing. Author: Adam Simmons Date published: October 15th 2019. On the AOC the vast majority of pixel transitions were performed fast enough for a good solid 144Hz experience. It was free from the sort of clear saturation shifts that occur at different sections of the screen for VA and moreover TN models. We did not observe any static interlace patterns, although we did observe some dynamic ‘interlace pattern artifacts’. There are saturation, contrast and brightness shifts that are more noticeable on this model compared to some IPS-type models. It would’ve been nice if these could be quickly cycled or enabled and disabled without entering the main menu, but they’re still quite easy to access. If fully installed, AMD drivers feature Radeon Settings, which makes activation of the technology very simple and something that usually occurs automatically. This is a title with plenty of high-contrast scenes – or, at least, scenes that show contrasting content and look their cinematic best on models with strong contrast. For frame rate dips below 48fps, the monitor sticks to a multiple of the frame rate with its refresh rate – something AMD calls LFC (Low Framerate Compensation). White in-game text inside a dimly lit building, for example. We explore this and some other aspects to consider using in-game examples at the end of this section. This second factor is dominant on modern monitors, although slower than optimal pixel responses are still an important contributor. Press OK, then turn the monitor off then on again so that it re-establishes connection – the technology should now be active. If that isn’t the case, you’re left with extremely obvious stuttering or juddering, which stands out because there’s very little perceived blur due to eye movement to mask it. With the 24G2U (24G2), you need to connect the monitor up via DisplayPort and enable ‘FreeSync’ in the ‘Game Setting’ section of the OSD. Sitting closer to the screen exaggerates the sort of shifts explored here. It isn’t designed to replace the C24G1, comparing IPS and VA panel types is a bit of an apples to oranges comparison. The highest white luminance recorded on the table was 356 cd/m², significantly exceeding the specified 250 cd/m², whilst the minimum white luminance recorded was 89 cd/m². The highest deviation was recorded towards the bottom right (DeltaE 4.3). ‘Strong’ remained free from obvious overshoot up to the high double-digit frame rates, whilst ‘Medium’ was excellent for lower frame rates and quite competent higher up as well. We preferred a setting of ‘15’ as this provided what we consider an optimal mixture of brightness and clarity. Also be aware that setting the ‘Overdrive’ to ‘Boost’ is equivalent to using the ‘Strong’ setting and setting ‘MBR’ to ‘20’. The luminance uniformity was reasonable overall. So it isn’t ideal, but can be used to give a reliable emulation of the sRGB colour space for non-colour managed workflows. Overall, this is a ‘vibrant’ look that many would admire – but it’s subjective and personal preferences vary.Shadow of the Tomb Raider told a similar story. The pursuit photographs below were taken with the monitor set to 100Hz using MBR. The reference shots don’t show this, but there is instead some overshoot due to the high levels of acceleration used to speed up the pixel transitions. Minimal bezel distraction for the ultimate battle station. Even well-tuned ones like the AOC C24G1, where some ‘smeary’ trailing and stronger overshoot can be found. This gives a luminance adjustment range of 276 cd/m², although the minimum white luminance achieved (without loss of contrast) will be a bit high for some sensitive users. This will rapidly adjust as frame rate fluctuates, whereas if Adaptive-Sync isn’t being used it will stay at the static refresh rate you’ve selected. Assume any setting not mentioned, including ‘Contrast’, was left at default. A few reference screens are also shown for comparison, using their respective strobe backlight settings at 100Hz. At a basic level, a mismatch between the frame rate and refresh rate can cause stuttering (VSync on) or tearing and juddering (VSync off). But it’s a resolution complemented well by the size of the screen and is relatively easy to push at high frame rates – which is really where this monitor’s in its element. We used this setting for our own viewing pleasure in the evenings, although not for specific testing beyond that involving this particular setting. The first is the enhanced ‘connected feel’ you get when interacting with the game world. Additional testing was performed using an AMD Radeon RX 580 and using HDMI, although observations for this table didn’t vary significantly between GPUs or inputs. After some minor tweaking, things were nicely balanced – with the generous colour gamut and consistent output of the IPS-type panel providing a vibrancy and richness throughout the screen than competing TN and VA models simply can’t match. The SpyderX Elite was used to assess the uniformity of lighter shades, represented by 9 equally spaced white quadrants running from the top left to bottom right of the screen. The exception to this is ‘MBR = 1’, which really just creates a messy double-image as it isn’t effective enough as a strobe backlight setting. The monitor again provided a solid 144Hz experience without obvious weaknesses. This cuts down on the gamut significantly, providing just a little under-coverage (98% sRGB) without over-coverage. Even well-tuned ones like the, FreeSync requires a compatible AMD GPU such as the Radeon RX 580 used in our test system. There was also ‘IPS glow’ which ate away at detail peripherally. There was a small amount of faint ‘powdery trailing’ for some transitions, which slightly increased perceived blur. Where possible, the monitor dynamically adjusts its refresh rate so that it matches the frame rate being outputted by the GPU. The ‘Strong’ overdrive setting introduces a fair bit of overshoot (inverse ghosting) some bright ‘halo’ trails with a bit of an inky appearance in places. The final columns show some reference screens for comparison. Chosen by our editors as one of the best products in its category. The monitor has a slight green push by default, but is otherwise nicely balanced. AOC Game Mode allows quick adjustment and pre-designed setups (tailored for different genres) to enhance the gaming experience. The reference shots don’t show this to the same degree, particularly for the S2417DG reference where overshoot is present but the shot is otherwise very ‘clean’ indeed with a very distinct main object. Note how it blooms out noticeably from sharper viewing angles, with a clear silver or golden red sheen depending on angle. The ‘powdery trailing’ here was somewhat heavier and more extended and provided some isolated cases of greater perceived blur. Explosions ripping through space, light sabers lighting up dark interior locations and suchlike. The average deviation between each quadrant and the brightest recorded point was 6.88%, which is decent. The first few blocks blended into the background readily, which is appropriate for a monitor tracking the ‘2.2’ gamma curve. As with other aspects of uniformity, it’s important to remember that individual units vary and that you can expect deviation beyond the measured points. Although not documented here, 120Hz behaved some way between the tested refresh rates (100Hz and 144Hz), as you might expect. With graphics settings increased somewhat, the average framerate fell closer to 100fps. Again, a very nice thing to have. Often lit by a few point sources of light. The resolution doesn’t provide the same sort of clarity and detail levels as higher resolutions nor the same ‘desktop real estate’. There is pronounced strobe crosstalk behind the UFO (and also in front in the case of ‘MBR = 1’ and to a less extent ‘MBR = 15’), however. It can’t compensate for other interruptions to smooth game play, for example network latency or insufficient system memory. For frame rate dips below 48fps, the monitor sticks to a multiple of the frame rate with its refresh rate – something AMD calls LFC (Low Framerate Compensation). The vast majority of pixel transitions were snappy, without obvious overshoot being introduced. Finally, note again that you can activate the ‘Frame Counter’ in the ‘Game Setting’ section of the OSD to see if the technology is working. You’d therefore select either the third or fourth option in the list, shown in the image below. As such, it looks its best where contrast performance is strong. PRODUCTS. FreeSync – the technology and activating itAMD FreeSync is a variable refresh rate technology, an AMD-specific alternative to Nvidia G-SYNC. The image set below shows results with a slight bump up in refresh rate to 120Hz, MBR again active. ResponsivenessInput lagWe used a small tool called SMTT 2.0 and a sensitive camera to compare the 24G2U (24G2)’s latency with a screen of known latency. And the Dell S2417DG using ULMB (‘Ultra Low Motion Blur’).Note that the ‘Overdrive’ setting can be adjusted under MBR. At a basic level, a mismatch between the frame rate and refresh rate can cause stuttering (VSync on) or tearing and juddering (VSync off).
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