AOC AGON Pro 326UD 4K OLED 165Hz Gaming Monitor Review

Display Analysis

In SDR mode the panel comes with exceptional colour reproduction using the default settings, scoring 93% of the DCI=P3 gamut, and of course, 100% of SRGB (it’s actually more like 140% on this scale).

Many OLED monitors have aggressive dimming, which throws this result off completely, but as you can see, this one stood up absolutely perfectly, and actually, this may be one of the first monitors I’ve tested to have scored perfectly in this test.

The grey ramp looks quite drastic, but actually, there’s very little deviance here, starting at around 6660 and peaking at 6840. For the most part, from 40 to 100, the deviation is even smaller than that. The Philips Evnia I reviewed recently had a deviance of around 900, and that was a great monitor, so this being less than 200 is pretty remarkable.

Obviously, this being an OLED it scored perfect black levels of zero, with a peak brightness of just under 250 nits using default settings, but turned up it’ll hit more closely to the 250 nits target.

Brightness and colour uniformity were exceptional too, at peak brightness, there’s some indication of slight dimming at points, largely this was detected by my calibration tool, but I couldn’t see it myself while looking at the panel.

However, it’s clear the panel protection tech was working (above) as when we set the monitor to 50% brightness, the monitor doesn’t have to step in and the results are by far the cleanest and most accurate I’ve ever tested.

Because there’s no backlight here, there’s 1% or less deviance in the luminance, which is within a 1% margin of error, so that is to say it’s basically perfectly consistent.

When it comes to colour accuracy, under 5 Delta-E is good, under 3 is hard for most people to detect colour inaccuracy with the human eye, 1-2 is more than good enough for professional colour grading work, and with this monitor scoring just 0.58 on average, you can be confident that the colour being reproduced on screen is extremely accurate to the source.

My calibration tool can’t wrap its head around the infinite contrast of OLED (I will buy a new tester in the near future), so it just noped out of giving that a score, but overall, you can see this monitor scores extremely high. Ignoring the contrast score, its overall rating should actually be a 4.5/5. Keep in mind, that’s with out-of-the-box settings.

Taking a report on DisplayCal, we saw similar results, but it came with some recommendations on the OSD settings and a recalibration and the results were pretty incredible.

It recommended I set the display colour to the “user” setting and set the colour temperature to Red 44 (-6), Green to 60 (+10) and Blue to 50 (no change), and brightness around 77/100 (can adjust to your own taste if needed). This resulted in a much richer gamut volume and excellent gamut coverage, but also truly exceptional colour accuracy of just 0.07 Delta-E. While it’s recommended you do your own calibration as two monitors may not be exactly alike, you can use the settings I just mentioned, and apply this .icc (Google Drive download link here) profile in “Windows Colour Management” to see the results yourself.

For HDR users, set the display to DisplayHDR for gaming, and maybe HDRPeak for some movies if you prefer a brighter peak brightness (up to 1000 nits) but this can result in more dimming. Personally, I avoid the HDR Picture, HDR Movie, and HDR Gaming as they seem to just apply weird levels of saturation and sharpening to what was already a gorgeous image, but do offer a peak brightness of 900 nits.