ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

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masterblaster
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by masterblaster » 02 Dec 2021, 00:24

To be fair, its not like youre going to really notice that ips glow in game.

ysenojftw
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by ysenojftw » 02 Dec 2021, 00:31

Can we get some settings recommendations for games for this monitor? Lowest lag with blur settings?

Angel Soler
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by Angel Soler » 02 Dec 2021, 01:39

Hello Chief!!

I need to know if the XG2431 has less inputlag in strobe mode at 60hz (consoles) than the XP2411P

I'm going to buy it from import and I want to make sure

Thank you very much

Ángel

ysenojftw
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by ysenojftw » 02 Dec 2021, 11:02

I agree we need a recommended settings thread for this monitor like the other monitors that have threads like that.

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Discorz
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by Discorz » 02 Dec 2021, 12:51

Chief Blur Buster wrote:
30 Nov 2021, 22:53
That said, I can at least say the basics when it comes to Pulse Width (because it's quite a damn obvious brightness change):

PureXP Light = persistence at 40% of a refresh cycle
PureXP Normal = persistence at 30% of a refresh cycle
PureXP Extreme = persistence at 20% of a refresh cycle
PureXP Ultra = persistence at 10% of a refresh cycle

Custom allows adjusting pulse width in 1% increments from 1% to 40% of a refresh cycle.
Is this about right if we assume max brightness is ∼350 nits?

PureXP Light, persistence at 40% = ∼254 nits
PureXP Normal, persistence at 30% = ∼193 nits
PureXP Extreme, persistence at 20% = ∼127 nits
PureXP Ultra, persistence at 10% = ∼61 nits
Compare UFOs | Do you use Blur Reduction? | Smooth Frog | Latency Split Test
Alienware AW2521H, Gigabyte M32Q, Asus VG279QM, Alienware AW2518HF, AOC C24G1, AOC G2790PX, Setup

AquariusLuLu
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by AquariusLuLu » 02 Dec 2021, 13:51

Angel Soler wrote:
02 Dec 2021, 01:39
Hello Chief!!

I need to know if the XG2431 has less inputlag in strobe mode at 60hz (consoles) than the XP2411P

I'm going to buy it from import and I want to make sure

Thank you very much

Ángel
Honestly, I am curious of this as well and would like to know. My XG2431 is arriving this Sunday! Coming from EX2510 (great monitor--motion blur only kicks in after 100FPS) need something for 60Hz just hoping it scores well o input lag at 60Hz! If anyone knows info regarding this would be greatly appreciated.

royale00
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by royale00 » 02 Dec 2021, 14:09

ysenojftw wrote:
02 Dec 2021, 00:31
Can we get some settings recommendations for games for this monitor? Lowest lag with blur settings?
Just got this monitor a few days ago coming from an Alienware AW2521H 360hz. Messing with the custom strobing setting with the ViewSonic strobe utility this is what I found works for me @ 240hz.
xg2431_my_strobe_settings.png
xg2431_my_strobe_settings.png (232.18 KiB) Viewed 5695 times

namcost
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Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by namcost » 02 Dec 2021, 19:39

Okay boys and girls. I did some 240hz testing with the 3 overdrive modes (standard/advanced/ultrafast) and have given 10/90 times in a nice little chart....

https://imgur.com/a/8cVUkaQ
XG2431 240hz Timings 3 Overdrive Modes.png
XG2431 240hz Timings 3 Overdrive Modes.png (86.39 KiB) Viewed 5695 times
These tests were done AFTER color calibration (using the custom color temp mode. 95 red, 95 green, 100 blue gave perfect d65 aka 6500 white point) and without using any of the flicker/strobing modes. Pure pixel response at 240hz using the 3 overdrive modes.

For color calibration, after calibration I got a measured average delta-e of 1.2 for all patches of color. Lowest average 90% was 0.5 and highest average 10% was 6.3. Maximum all patches (absolute worst) was 8.5 and maximum of the lowest 90% was 4.7.... overall not bad but not great. Considering the price of the monitor, its actually really good.

Compared to my Alienware 240hz (aw2418hf) this monitor is pretty nice. Granted the Alienware is a TN based monitor.... this IPS has interesting readings. Generally it seems the darker transitions are slower than brighter. Going to full 100% white from any starting point pretty much gave the best results. On the flip side, on my Alienware, going to full 100% white gave the slowest transition times.

My next testing will involve messing with the flicker backlight/strobing stuff. I don't think 240hz will offer a good enough picture. So far I get a double image no matter what. I might try 120hz and see if I can do "large vertical totals" to get a perfect image. If so, awesome. But so far, Nvidia only recognizes 3 modes, 100hz, 144hz, and 240hz. So I am going to have to make a custom resolution for 120hz.... which to me, seems odd. I would think all modes would show up like my Alienware. I am using a certified DP 1.4 cable from Club3d so I know that my cable is not the issue. So far, monitor seems nice, but I haven't tried gaming or watching movies/tv/anime yet. I figured I would hot drop my results as soon as I was done.

Let me know if anyone wants any other refresh rates tested for pixel response and with WHAT overdrive mode. Not really going to run through all 3 modes on every refresh rate possible, so if you have a specific combo of things, I can test it.

The tools used....

X-Rite i1Display PRO using their native software. I know some people will yelp about using Display Cal.... but in my personal testing, the stock X-Rite software gets closer to CALMAN software than Display Cal does. But CALMAN is outside my price range so I wont touch it.

PicoScope 2204a USB Oscilloscope and their native software. It can auto give me 10/90 or 20/80 times, I wish it had the ability to give me full 0-100 times. Maybe I can figure out how to add that in. The software is adaptable.

ThorLabs SM05PD1B Photodiode and using a ThorLabs SM to BNC cable.

namcost
Posts: 21
Joined: 02 Dec 2021, 19:18

Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by namcost » 02 Dec 2021, 19:48

Chief Blur Buster wrote:
30 Nov 2021, 17:52
Zace wrote:
30 Nov 2021, 17:51
do you need qft on 240hz too?
Easy Answer:
Quick Frame Transport (QFT) is optional. It is useful for reduced input lag and reduced crosstalk for below maximum refresh rates (below 240Hz). For example, getting a 60Hz or 120Hz mode with the low input lag of 240Hz. QFT is not needed for full 240Hz.

Due to panel temperature / lottery / variances, you can still get strobe quality improvements (better than factory) via Strobe Utility without using QFT. Just remember to warm up your monitor for at least 30-60 minutes before using Strobe Utility. Warmer LCDs have faster LCD GtG pixel response than cold LCDs, especially in the winter.
(end of easy answer)

Long Advanced Answer:
Quick Frame Transport (QFT) refers to the speed of frame transmission on the video cable (which is also synchronized to scanout velocity on an Innolux 23.8" panels).

It is mainly better for below-max-Hz mode, because QFT accelerates a low-Hz mode to deliver refresh cycles at max-Hz velocity (e.g. 120Hz refresh cycles transmitted over the video cable in 1/240sec). In general, don't bother with QFT at 240Hz -- it mainly benefits less-than-240Hz modes. A 240Hz refresh cycle can't refresh faster than 1/240sec, but the XG2431 supports refreshing any low-Hz mode (e.g. 120Hz) at max-Hz velocity of 1/240sec.

Faster refreshing per refresh cycle creates a longer idle time between refresh cycles, to more easily hide LCD GtG pixel response in total darkness between refresh cycles, to make possible crosstalk-free strobing at low Hz. The world's first zero-crosstalk LCD operation needs to use these technique to hide real-world LCD GtG100% in a super-long VBI. Very few LCDs on the market can do this, such as Valve Index VR LCD, Oculus Quest 2 VR LCD, and the ViewSonic XG2431 LCD (via <120Hz + QFT + Strobe Utility re-tuning).

QFT means a 120Hz refresh cycle can be painted onto the XG2431 panel in just 1/240sec (about 4ms). This means the panel can idle for 4ms between refresh cycles in total darkness before the strobe backlight flash. This is long enough to let most pixels reach GtG100% for zero-crosstalk strobing, hiding LCD GtG limitations away from human eyes. Lower Hz allows more idle time between refresh cycles, so lower Hz will be easier go crosstalk-free.

It is not possible to create QFT modes via GMT, CVT, CVT-R timings formulas. QFT requires a custom EDID formula, that monitor manufacturers currently usually do not use (yet), but is now possible via a Custom Resolution Utility. Eventually I hope to convince future manufacturers to add a "Quick Frame Transport ON/OFF" setting in monitor menus (EDID swap behavior, similar to FreeSync ON/OFF), so people don't have to use ToastyX or Custom Resolutions to create QFT modes. This would be 100% true plug-and-play QFT.
But today, for now, QFT requires the creation of a Custom Resolution (same visible resolution, but much bigger blanking interval).
(end of long advanced answer)
Can you give this formula for 120hz for testing? I need to know what to plug into Nvidia control panel in order to setup the 120hz mode. Currently 120hz doesn't show up in my list. Its only 100/144/240 in terms of what shows up.

ysenojftw
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Joined: 17 Feb 2021, 23:53

Re: ViewSonic XG2431 Discussion Thread [Blur Busters Approved XG2431 - 24" 240Hz IPS with Best Strobing]

Post by ysenojftw » 03 Dec 2021, 07:40

royale00 wrote:
02 Dec 2021, 14:09
ysenojftw wrote:
02 Dec 2021, 00:31
Can we get some settings recommendations for games for this monitor? Lowest lag with blur settings?
Just got this monitor a few days ago coming from an Alienware AW2521H 360hz. Messing with the custom strobing setting with the ViewSonic strobe utility this is what I found works for me @ 240hz.

xg2431_my_strobe_settings.png
I will give these a try, did you notice any input lag with purexp?

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