For more rigorous testing we put the AL2623W through our usual set of DisplayMate tests, which give a monitor a good workout and generally highlight any significant flaws in performance. Here the monitor put in an average performance, with a number of problems being thrown up.
Although the reported brightness is actually a decent 500 cd/m2, this doesn’t translate into an especially vivid display. Colour gradation in the Colour Scaling tests weren't as strong as I would have liked and one had to look closely to spot the differences especially in the middle of the spectrum. These test results were backed up by firing Trackmania Nations, a severely fast and colourful racer. It quickly showed the colours weren't especially vivid, though the panel did deal well with the high speed motion.
In the Grey-Scale test the AL2623W struggled to produce the darker greys satisfactorily and activating DCR only compounded the problem. More alarming though was the White-Level Saturation test, where the panel failed miserably at producing very bright whites properly. Moreover, no manner of fiddling with the Brightness and Contrast settings helped, thus concluding that this is a problem intrinsic to the panel. I also found whites and light greys to have a slight pinkish tint using the Warm colour settings, while Cool was rather too Blue even for those who like a cooler look.
Colour Uniformity tests showed some minor shading along the sides of the screen but nothing terribly alarming, and there was a pleasing lack of any noticeable backlight bleeding when looking at a dark screen. The High Contrast-Streaking test showed a noticeable amount of shadowing, though this was less evident on the Mid-Range Streaking test.
Overall the AL2623W performed more or less as one might expect, proving it was suitable for its target market but probably not for those interested in image editing or multimedia. Viewing angles were okay, remaining readable from an angle despite some colour shift.