We ran the MO27Q28G through our standard benchmark tests using Vertical screens‘Calman calibration software and a Klein K-10A colorimeter. We also tested it in a number of games to measure input lag and judge its real-world performance. We take these readings with Gigabyte’s out-of-the-box configuration, unless otherwise noted.
(Credit: Joseph Maldonado)
In our first test, we compared brightness using the MO27Q28G’s default SDR profile. Under these conditions, we measured a maximum brightness of 312 nits with a 10% window size, in line with its SDR rating of 335 nits. That number improved when we switched to HDR. We recorded 500 nits with a 1% window size, consistent with the HDR 500 rating. With a 10% window size, HDR brightness reached 561 nits.
For the next test, I deviated from our out-of-the-box setup protocol, because I wanted to test Gigabyte’s HDR maximum brightness. I turned on the HDR 1500 preset, set the window size to 2%, and measured 1311 nits. That’s not the 1,500 nits of maximum HDR brightness that Gigabyte promises, but it’s not so far off that you can’t reach it with a few settings adjustments.
With the monitor’s HDR 1500 mode enabled, you have a few options to adjust HDR brightness, as well as light enhancement, color enhancement, and darkness enhancement. The light and color enhancement has three levels, while the dark enhancement only has an on/off option. Light Enhance was noticeable right away and is definitely something you’ll want to adjust as I thought the base HDR was a bit dim for my tastes. But once I found the combination of settings I liked, I was impressed. You’ll definitely want to experiment with the settings when playing games designed for HDR, such as Cyberpunk 2077.
The MO27Q28G has a nominal contrast ratio of 1,500,000:1. This very high figure indicates the display’s ability to produce deep blacks along with bright whites, resulting in improved image quality in both light and dark scenes. With this in mind, contrast ratio ratings in the millions have little practical comparison value, since OLED contrast ratios are essentially infinite.
(Credit: Calman)
Finally, color gamut testing: I found that the MO27Q28G spans 98.5% of the Adobe RGB color space (see chart above), 166% of the sRGB gamut (see chart below), and 95.4% of the DCI-P3 gamut. That’s excellent color coverage, although it’s what we expect from OLED panels.
(Credit: Calman)
