Originally Posted by HiTechPixel
You mentioned ULBM in tandem with the G-Sync module but I wonder, has Asus perhaps locked the G-Sync module into ULBM mode or can one possibly run this mode how G-Sync was intended, with variable refresh rates?
I don't know if 1ms is available in GSYNC mode.
If it is, then it's definitely a GtG measurement, and not strobing-assisted. So that 1ms will still have lots of motion blur, since the GtG measurement is not the same thing as a persistence measurement.
From Andy from NVIDIA who posted on NeoGAF:
Originally Posted by AndyBNV
“We have a superior, low-persistence mode that should outperform that unofficial [LightBoost] implementation, and importantly, it will be available on every G-SYNC monitor. Details will be available at a later date.”.
I know 1ms persistence is currently not possible without strobing (because 1ms persistence /without/ strobing requires filling all 1ms timeslots with unique frame -- aka 1000fps @ 1000Hz -- which is not possible yet in a consumer monitor today. If this is an IPS or VA panel, then this definitely confirms a LightBoost-like mode of operation, which is now known as ULMB as revealed by people who received their G-SYNC Upgrade Kits. (This bypassed the press embargo on ULMB).
If this is a TN panel, this is almost certainly a basic GtG measurement
, which to me is worthless from a motion blur perspective (1ms GtG can still mean 16.7ms of persistence)
To me, 1ms persistence
is preferable over 1ms GtG transition
. Persistence is the cause of motion blur, not GtG.
Either way, the good news is that regardless, it probably has ULMB anyway (regardless of TN / VA / IPS) since any kind of 1ms claim (GtG or persistence) means a panel capable of a good strobe backlight, which can fix the motion blur. Nowadays, with ULMB / LightBoost / Turbo240 / BENQ Blur Reduction (four different brands of strobe backlights) -- it would be silly this year in 2014 for any gaming monitor maker to omit an optional strobe backlight from *any* panel capable of 1ms.
However, it's my opinion that ULMB would only be available in non-GSYNC mode on this monitor. So G-SYNC would be a higher-persistence mode (6.9ms persistence at 144fps, or 8.3ms persistence at 120fps). On current G-SYNC monitors, persistence is inversely proportional to framerate -- that's the variable blur/ghosting effect widely reported by G-SYNC users (as framerate slows down, the motion blur increases -- 60fps looks like 60fps@60Hz, and 120fps looks like 120fps@120Hz with half the motion blur -- except there's a complete continuum between low framerates and high framerates on a G-SYNC monitors)Edited by mdrejhon - 1/6/14 at 1:46pm