The problem is there are no complete good uhd (not 4k
) 144 hz monitors out there. Only used with a huge panel lottery.
The X27(P) is good and has suitable overdrive across the whole adaptive range. If you get a flawless panel and slow down the fan speed via factory menu. Or you remove the fan and put a 92 mm Noctua fan on the back together with a 92 mm shroud for decreasing air turbulence/noises (here for you use a 92mm frame of a cheap 92 mm fan) on the noctua fan and put them between monitor case and the vesa adapter while using a monitor arm. For power and speed control you can use an external with 4 pin molex connector and the Noctua NA-FC 1 fan control. I did this mod for my X27. I was nearly silent.
But "only" 120 hz with 8 bit color depth.
If the panel is too slow it cant achieve more. So it's irrelevant. None of the uhd panels are fast for doing more across all transitions.
Newer models like the XB323QKNV and FI32U are slow and overloaded with blb and ips glow and have no worth mentioning hdr performance, mostly worse than sdr. The FI32U (same panel as XB323QNKV) has coil whine @ "hdr" and awful overdrive with much overshoot, especially below 100 hz.
The 27GN950 has loud, whining fans and a absolute awful grainy anti glare coating. Wouldnt touch it.