https://www.techspot.com/review/1954-hp-omen-x-27-monitor. The HP Omen X 27 is a standard TN 1440p display (2560 x 1440), but it pushes the refresh rate up to 240Hz for the first time.
I've had TN so not underating it, I rather have a 144-165HZ VA or even IPS than TN, no real gain going to 240HZ.
It's quite amusing how these technologies go in and out of fashion;
It used to be IPS...IPS...IPS, amazing colour accuracy and viewing angles, then it was oh, IPS, yuck, backlight bleed, IPS glow, horrible black levels, crappy motion blur.
Followed by VA...VA...VA, amazing contrast ratio!!!! followed by VA, yuck, black crush, oversaturated colours, motion blur.
I've had my TN gsync unit for 4 years and have no complaints. The colours aren't as good as my 60hz IPS panel, but i didn't buy it for the colours. They look washed out due to the anti glare panel on the glass - could just remove it to improve them.