antiblur wrote: β31 Aug 2021, 23:36
Hello, Chief. Π‘an u tell me, does this monitor support 240Hz strobbing? That is, will I have 240Hz with strobbing on, or will the frequency be lower? Sorry for my English.
Yes. This monitor supports strobing from ~59 Hz through 240 Hz in essentially 0.001 Hz increments. You can strobe at any custom Hz you want!
There is a continuous continuum of strobe quality from lowest Hz to highest Hz.
JDnoob wrote: β02 Sep 2021, 01:09
240hz strobing is supported but will have higher crosstalk.
Still far lower than many other IPS monitors -- it's the best 240 Hz strobed IPS I've seen so far.
It is a continuous continuum of slightly improving strobe (by a fraction of a percent) crosstalk for every Hz you get below max Hz, until the crosstalk pretty much nearly zeros out (at ~120Hz QFT / large VT and below), it can be tuned to be barely visible at 144 Hz, but many don't mind 180Hz-240Hz strobe -- it depends on your personal threshold for seeing crosstalk especially at the top/bottom edges.
The center perfect crosstalk-free zone becomes taller and taller the more Hz you go below max Hz, which is due to a law of physics effect in the ratio of refreshtime:GtGtime ... Basically the refresh cycle time versus the pixel response time. ALL panels in humankind have worse crosstalk at max Hz. That's why NVIDIA locks ULMB below max Hz, but all Blur Busters Approved monitors always unlocks the strobe max Hz, so you choose to strobe lower Hz at lower crosstalk, or max Hz with more crosstalk.
JDnoob wrote: β02 Sep 2021, 01:09
Iβm curious, what is the approximate brightness of this monitor at various strobe widths for 60hz? Is this posted anywhere?
What would the 60hz MPRT/strobe duration be at around 100 nits?
Supported pulse widths is 1% to 40% of a refresh cycle, so you can guesstimate it as percentages of max-brightness. However, there is a light amount (safe) of voltage boosting, so it will be slightly brighter than that minimum baseline -- probably exceeding approximately 200 nits at Light thanks to the voltage boosted strobes. (just like the XG270 does too). The sweet spot pulse width is usually either Normal or Extreme for most people, when using Large Vertical Totals at 60 Hz, which is capable of going darn near-zero-crosstalk during 25-30% pulse width.
PureXP default pulse width settings:
Light = 40% of refresh cycle
Normal = 30% of refresh cycle
Extreme = 20% of refresh cycle
Ultra = 10% of refresh cycle
Custom = Tunable 1% to 40% via
ViewSonic Strobe Utility.
MPRTs will match pulse width, so pulse width 20 means MPRT(100%) will be 20/100ths of a refresh cycle, by the pure Blur Busters Law mathematics, excluding backlight decay effects (capacitors, fast backlight phosphor, etc) which adds approximately ~0.1ms. For most pulse widths, that is an insignificant error margin, and MPRT(100%) of a good strobe backlight pretty much exactly matches pulse width in milliseconds.
I will let reviewers test the actual brightness -- feel free to vote at RTINGS Suggest-a-Monitor for the XG2431 to be reviewed.
