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Uncalibrated – Maximum Backlight Level



The MO27Q28G’s Tandem OLED tech provides a little extra brightness putting it on top of this group by around 25 nits. This is with APL Stabilize set to High and measuring a 25% window pattern. The Asus and Aorus screens had their variable brightness options turned on as well. A full field with APL Stabilize on Low yielded just over 330 nits which is also brighter than the constant brightness screens in this bunch from ViewSonic, Alienware and AOC. Black levels and contrast could not be measured.
After Calibration to 200 nits



Calibration doesn’t alter the measurable dynamic range, which remains theoretically infinite. The MO27Q28G is a typical OLED in this regard. The ANSI test is also undetermined. Since the checkerboard pattern has a 50% APL, the variable brightness levels don’t affect the result. This is also typical OLED performance.
Test Takeaway: The MO27Q28G is a tad brighter than the competition, but its black levels and contrast are comparable to other OLEDs. Not all its competitors have variable brightness, so Gigabyte stands out there. And it’s one of the very few to offer two levels of adjustment. With a bit of extra punch from Tandem OLED tech, it delivers stellar SDR imagery.
MORE: Best Gaming Monitors
MORE: How We Test PC Monitors
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Christian Eberle is a Contributing Editor for Tom's Hardware US. He's a veteran reviewer of A/V equipment, specializing in monitors. Christian began his obsession with tech when he built his first PC in 1991, a 286 running DOS 3.0 at a blazing 12MHz. In 2006, he undertook training from the Imaging Science Foundation in video calibration and testing and thus started a passion for precise imaging that persists to this day. He is also a professional musician with a degree from the New England Conservatory as a classical bassoonist which he used to good effect as a performer with the West Point Army Band from 1987 to 2013. He enjoys watching movies and listening to high-end audio in his custom-built home theater and can be seen riding trails near his home on a race-ready ICE VTX recumbent trike. Christian enjoys the endless summer in Florida where he lives with his wife and Chihuahua and plays with orchestras around the state.