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At 144Hz, above, the UFO appears slightly narrower and more sharply focused. Obviously not as significant a difference as comparing 60Hz to 120Hz, but still an improvement. This reflects slightly lower perceived blur due to eye movement. The trailing behind the object is fairly similar to at 120Hz. Because the perceived blur due to eye movement is decreased (object is narrower) and the refresh rate itself has increased, the pixel response requirements for a ‘clean’ performance also increase slightly. The trailing is therefore slightly more extended, although the overall nature of the trailing is quite similar. Most users will appreciate the improved ‘connected feel’ (explored later) and the overall reduction in perceived blur at 144Hz regardless of this. The ‘Strong’ setting is again optimal, without strong overshoot for the transitions shown here and a slight reduction in trailing compared to weaker settings. The C27HG70 reference almost looks like another step up in overdrive over the AG273QCX, with a bit more of a reduction in trailing without any obvious overshoot being introduced for these transitions. The XG240R reference is very clean indeed, the envy of pretty much any other LCD on the market. The TN panel does mean that you’ll need to be sat head on to the display to get the right viewing angle, and the colour accuracy could sometimes be a little off. FreeSync Premium Pro is supported but there’s no Nvidia G-Sync and the Vesa Display HDR400 isn’t the best you can get either. The gamma tests were a bit off, falling in the 2.3 range. Standard gamma calibration is 2.2, to these results are close but still slightly off. The gradient test was pristine, however, showing no banding whatsoever. The ghosting test also came out exceptionally well, which was borne out in my game tests where we observed no ghosting whatsoever. VA panels have become my personal favorite for gaming, delivering rich colors and excellent contrast compared to the twisted nematic (TN) panels so common to gaming displays. The trade-off is usually response time. AOC’s own AGON AG322QCX from mid-2018 is quoted at 4ms gray-to-gray, whereas a TN panel like the ASUS ROG Swift PG278QR can deliver 1ms. I say “usually” because AOC actually quotes the AG273QCX as featuring a 1ms “smart response,” which, by wording alone, made me raise an eyebrow.
The ‘Overdrive’ setting did not function with Adaptive-Sync enabled on our Nvidia GPU. All settings behaved as ‘Off’. The monitor also includes a Dynamic Contrast setting called ‘DCR,’ but since there’s no local dimming, it’s not as effective as possible. It reacts well to changes in scene brightness but tends to be a bit too bright for mixed content. We prefer manual brightness control where local dimming is absent. Free-Sync and G-Sync Compatibility
Fairly low input lag and a 144Hz refresh rate to give a good ‘connected feel’, and Adaptive-Sync working for both AMD and Nvidia users to get rid of tearing and stuttering from frame and refresh rate mismatches On a more positive note, it’s one of very few gaming monitors to feature AMD FreeSync 2. Compared to normal FreeSync, FreeSync 2 monitors are validated by AMD and are guaranteed to feature High Dynamic Range, low latency, and low framerate compensation. The last is particularly important as it extends the FreeSync range throughout the monitor’s entire refresh range instead of the limited window of original FreeSync.Though isn’t on Nvidia's list of G-Sync approved FreeSync monitors, that may change in the future, and you can always force G-Sync with the latest Nvidia drivers. The video below summarises some of the key points raised in this written review and shows the monitor in action. The video review is designed to complement the written piece and is not nearly as comprehensive.
On Shadow of the Tomb Raider similar colour reproduction characteristics were apparent. Things again appeared quite rich overall, less so further down the screen but still far from ‘washed out’ in our view. There were some nice lush forest green shades, good rich earthy browns and fairly (but not excessively) vivid sky blues for shown for the central mass of the screen. Lara’s skin tone is something we’ve become almost obsessed with when testing monitors. And it’s quite a nice way of encapsulating colour consistency issues with monitors. She looked more or less as she should for the central mass of the screen, but her skin did appear too pale lower down the screen. Above the central region she received a ‘healthy tan’, becoming quite overdone near the top. These shifts are quite typical for TN models, but were again less pronounced than on some high refresh rate Full HD TN models. Viewing angles aren't bad, and I experienced no issues with light bleed or on-screen artifacts. The low response time and excellent support for gaming also make sure you'll notice very little in terms of lag in-game. If you're gaming, this display was made for you. The plethora of additional features as well the ergonomic design and exceptionally rich connectivity options are a big plus as well. Specifications Screen Size
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This won’t provide you with an otherworldly HDR viewing experience the high-end displays offer. Instead, you just get a glimpse of HDR can do, which is understandable at this price range. If you're still using a 1080p display, own an AMD GPU and are looking for an upgrade to 1440p, you should consider the AGON AG273QCX. It has all the features you'll need for butter-smooth gaming, it isn't too badly calibrated out-the-box, and it comes with FreeSync 2 and HDR support, though the latter isn't particularly noteworthy. If your FPS drops below 48 FPS, the monitor uses Low Framerate Compensation (LFC) to maintain smoother performance by doubling or tripling the frame rate. Although the AOC AG273QCX is not officially certified as G-SYNC compatible by NVIDIA, you can still use FreeSync with GTX 10-series or newer GPUs.
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