Absurdly good implementation.
Finally, this is what I was waiting for since the annoucement of this monitor.
This is one of the best 120 Hz backlight strobing experiences ever released.
The only other competitors, which are QD or YAG-based (I discount KSF/PFS completely due to red image artifacts, such as the PG27AQN), have either had:
β’ Very noticable crosstalk due to slow G2G RT's of LCD,
β’ A bad pulse on / brightness curve due to insufficient voltage boosting (24-27" QHD ULMB1) and vendors always opting for a "brightness-first" approach
β’ Inferior total image quality due to LCD subtype choice (Zowie 24" FHD TN's)
This implementation eradicates all 3 concerns at once.
The 1440p/4K space lacked good implementations for years now. This even exceeds models in the FHD native image resolution category category.
The Viewsonic XG2431 is rendered completely irrelevant by this ULMB2 mode in terms of brightness & effective motion clarity capabilities.
A shame that they won't allow the end-user to use custom refresh rates (e.g.: 72,96,125,144, 250 & others) and allow ULMB2 to be used on 240 & 360 Hz.
Lack of HDMI 2.1 FRL6 is a bummer, but this eye-tracked motion clarity is definitely praiseworthy.
It looks ~2px of blur to me (maybe even between 1-1,5px of blur), which would imply a β€6,25% pulse width on the setting that DisplayNinja tested.
This would make sense, as the voltage boosting is ~1800-2000cd/m2 and DisplayNinja measured ~130cd/m2 using the PW=25 setting.
It seems that PW<25 is the CRT-like eye-tracked motion clarity region for ULMB2 on these models.
Bravo Nvidia!
ps: I somewhat think they'd never release this mode if I wasn't bickering about it on here =p