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What gaming monitor has the best pixel overdrive?

post #1 of 9
Thread Starter 
I want to ditch my XL2411Z, mainly because the overdrive has terrible ghosting. You can see huge trails in certain games on this monitor. For instance, playing Fifa, the AMA high has ridiculous trails that are permanently streaking. You can imagine a solid green background and action that is constantly scrolling back and forth. It's quite pathetic how it performs when this is considered a gaming monitor. I've tried turning it off, but it becomes too blurry for my taste.

With that said, which monitor or manufacture have nearly pixel perfect overdrive? I think the best I've seen so far is the Acer xg270hu:




Anyone know of anything better?

Another thing; I don't get how anyone uses blur reduction on this thing. The amount of inverse ghosting is just plain absurd. I feel like I got punched in the forehead after 10 minutes of using it. biggrin.gif

Edit: To get an idea of how terrible BenQ is, look at images in this thread here.
Edited by gene-z - 2/2/16 at 8:34pm
    
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post #2 of 9
The monitor with the one of the best overdrives is the Benq XL2720Z, with blur reduction disabled, but you need to do a firmware bug exploit to activate it. Otherwise it's just as bad as the XL2411Z. Luckily it just takes a few buttons and profile changes to work.

(I don't know if this same trick works on the 1440p XL2730Z).

For now, you can improve the AMA on your XL2411Z if it has V3 or higher firmware, but the improvement will be nowhere near what the XL2720Z would show with the exact same method.

Do the following:
1) in Gamer preset #1, save "Standard mode", with AMA high, Blur reduction off, Contrast 45, Brightness 0-20, gamma 3-5, RGB 100, 100, 92, sharpness 5, or whatever settings you would normally traditionally use with blur reduction disabled.

2) In gamer preset #2, save the exact same settings as above, but with blur reduction set to On and Brightness set to 100.

3) Activate gamer preset #2, so blur reduction is on. Make sure blur reduction is on before going to #4.

4) Go to AMA and set it to high even though it's already on high. Either highlight "high" by pressing enter once and then pressing "back" to cancel the highlight (doing this somehow re-applies the current AMA with a different preset level without having to confirm the selection), or move the slider to off/premium and then back to high. This will overwrite the current AMA setting with a lower undocumented level.

If you aren't sure anything is happening, you can run this test in google chrome (make sure Aero and hardware acceleration is enabled). If you did it right, you should see the moving UFO's "refresh" and a change in the overdrive happen.

http://www.testufo.com/#test=photo&photo=alien-invasion.png&pps=960&pursuit=0&height=-1

If you are gaming with blur reduction and just want a lower AMA setting right here, you can stop now. However ANY change to monitor OSD brightness, ANY strobe setting changes through the service menu (Strobe Duty, Strobe phase, Single Strobe), or any resolution changes will instantly revert the AMA back to the ugly default level.

5) Now, instead of disabling blur reduction through the OSD, activate "gamer 1" directly right after doing the AMA toggle you did in 4.
This will exploit a firmware bug to apply the lower overdrive to blur reduction off. This should improve things slightly.
If you try to disable blur reduction through the OSD directly, it will apply default AMA levels instead of the bug we are exploiting.

Any resolution change or anything that "hard" refreshes the monitor screen completely and you will have to do the same thing again as the AMA will revert back.



The XL2720Z has the same toggle, but it has a *much* stronger effect on the AMA setting, lowering it drastically, down to Asus VG248QE Tracefree 60 levels. The effect is only slight improvement on the XL2411Z and XL2420Z. On the XL2720Z, it's drastic.

here's a picture to show how the XL2720Z is improved.
This is 100hz, blur reduction off, default (before toggling)



here is 100hz, blur reduction off, after toggling.



Here is 144hz, blur reduction off, default (before toggling).


And here is 144hz, blur reduction off, after toggling as above.



I think the results clearly speak for themselves.

Note, all of this requires V3 or newer firmware regardless of what Z series monitor you have. V2 will not work (it will just make things even worse). I know nothing about the XL2430T.
Edited by Falkentyne - 2/3/16 at 2:18am
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post #3 of 9
Thread Starter 
That's a neat trick, but it seems to randomly go back to the horrible AMA when I go into games.

Edit: Noticed it doesn't do it in Black OP 3, which has my exact refresh rate set, but in CSGO it resets. I took the refresh rate Black OPS was reporting in the menu, being 144.001, and set the launch option in CSGO with -refresh 144.001 and it fixed it! And to boot, the game alt+tabs a lot faster now.
Edited by gene-z - 2/4/16 at 2:21am
    
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post #4 of 9
So you noticed improvement with the trick on your monitor? How much improvement was there? I only have an XL2720Z and the improvement is drastic. The overdrive actually gets a bit too low with blur reduction enabled if I do that (which makes sense since the overdrive is too excessive if blur reduction is disabled by default (it's higher with MBR disabled than MBR enabled at defaults), and since that makes the overdrive perfect with MBR disabled afterwards, it becomes a "bit" too low with MBR (blur reduction) enabled so I wind up with a bit more normal ghosting. In some cases I have to lower the contrast to remove the added normal ghosting from having too low AMA with blur reduction enabled.

Yes, anyway, if the refresh rate or resolution changes, you need to do it all over again.
So either avoid alt tabbing OUT of a game, or just do your AMA toggle after the game starts, to cut down on the work.


The best way to avoid that problem is to keep the desktop running at the same resolution and refresh rate as the game, if possible You'll have to play with the video card settings for that, or unselect "use highest available refresh rate" on Nvidia if that's there.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by Falkentyne View Post

So you noticed improvement with the trick on your monitor? How much improvement was there? I only have an XL2720Z and the improvement is drastic. The overdrive actually gets a bit too low with blur reduction enabled if I do that (which makes sense since the overdrive is too excessive if blur reduction is disabled by default (it's higher with MBR disabled than MBR enabled at defaults), and since that makes the overdrive perfect with MBR disabled afterwards, it becomes a "bit" too low with MBR (blur reduction) enabled so I wind up with a bit more normal ghosting. In some cases I have to lower the contrast to remove the added normal ghosting from having too low AMA with blur reduction enabled.

Yes, anyway, if the refresh rate or resolution changes, you need to do it all over again.
So either avoid alt tabbing OUT of a game, or just do your AMA toggle after the game starts, to cut down on the work.


The best way to avoid that problem is to keep the desktop running at the same resolution and refresh rate as the game, if possible You'll have to play with the video card settings for that, or unselect "use highest available refresh rate" on Nvidia if that's there.


The improvement got rid of the hard blue trails I saw in FIFA completely. I can still see a tiny bit of ghosting, but it's not that deep harsh blue, it's very light now and barely noticeable! I don't understand how this isn't part of the factory menu, it's a lot better. I also fixed the reset by setting my exact refresh rate. Read my edit on the last post.

Edit: Forgot to say, Thanks.
Edited by gene-z - 2/4/16 at 2:23am
    
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post #6 of 9
Thread Starter 
Quote:
Originally Posted by Falkentyne View Post

So you noticed improvement with the trick on your monitor? How much improvement was there? I only have an XL2720Z and the improvement is drastic. The overdrive actually gets a bit too low with blur reduction enabled if I do that (which makes sense since the overdrive is too excessive if blur reduction is disabled by default (it's higher with MBR disabled than MBR enabled at defaults), and since that makes the overdrive perfect with MBR disabled afterwards, it becomes a "bit" too low with MBR (blur reduction) enabled so I wind up with a bit more normal ghosting. In some cases I have to lower the contrast to remove the added normal ghosting from having too low AMA with blur reduction enabled.

Yes, anyway, if the refresh rate or resolution changes, you need to do it all over again.
So either avoid alt tabbing OUT of a game, or just do your AMA toggle after the game starts, to cut down on the work.


The best way to avoid that problem is to keep the desktop running at the same resolution and refresh rate as the game, if possible You'll have to play with the video card settings for that, or unselect "use highest available refresh rate" on Nvidia if that's there.

Was playing with a bit more, and I noticed, as long as you have the refresh rate set exactly to the decimal value of what your monitor is running, it does not reset, even if you change resolutions in a game!

Edit: More testing, I found that some source games reset upon opening, even with the refresh decimal value set. Easy way to fix this is to set your game to windowed mode with the following launch commands -windowed -noborder, then put the following command in your autoexec.cfg (if you don't have one, make one in cfg folder) mat_setvideomode 1920 1080 0

This launches the game in windowed mode which bypasses the refresh reset, then the console command sets the video mode to fullscreen upon hitting the main menu. Now the only time the ama reset happens, is on power down/sleep. This little trick also seems to speed up the game startup, as the autodetect or whatever it does at the start slows it down.
Edited by gene-z - 2/4/16 at 4:02pm
    
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post #7 of 9
Quote:
Originally Posted by gene-z View Post

The improvement got rid of the hard blue trails I saw in FIFA completely. I can still see a tiny bit of ghosting, but it's not that deep harsh blue, it's very light now and barely noticeable! I don't understand how this isn't part of the factory menu, it's a lot better. I also fixed the reset by setting my exact refresh rate. Read my edit on the last post.

Edit: Forgot to say, Thanks.

No problem. Glad I could help improve your gaming experience. Benq really dropped the ball hard on these monitors. Great hardware, coupled with terrible firmware.
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post #8 of 9
Thread Starter 
Was messing around with this more today, and I dunno how, but I reduced the ghosting even more by using this tweak and then a few additional ones. For some odd reason, setting my contrast to 100 and enabling Gamma 1 reduces the ghosting even more. I read one of your other replies that decreasing Contrast helps reduces the ghosting, but on the XL2411Z it's the opposite. If you increase the contrast to 100 and set Gamma to 1, the very light blue trails completely disappears. I would say it's 99% pixel perfect overdrive now. biggrin.gif
    
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post #9 of 9
Setting contrast to 100 isn't really a tweak. Contrast 100+gamma 1 isn't really a viable setting for any sort of overall use.

The monitor starts clipping white tones whenever you go past contrast 50. In Lightboost mode, this happens if you go above contrast 40.
The reason it looks like ghosting disappeared is because you clipped a lot of the white balance out along with it.

Note that reducing the contrast does NOT "directly" reduce inverse ghosting.
It reduces normal ghosting.(due to how contrast works in the first place). But at the contrast 40-50 range, both seem to get affected.

In standard mode, the white clipping point is contrast 50.
If going higher improves the image quality in what you're using more than crushing whites and yellows, then by all means, go for it.

Also, reducing the RGB color values also raises the white clipping point, which is why FPS mode defaults to 71 contrast, but even that's beyond the clip point (which I would guess is somewhere around 60 with the default RGB's at 78, 76, and 77 (it's somewhere around there) unless you set RGB to 100, then 40+ starts clipping the edges of some colors in FPS1/2/RTS mode). Note that Gamma adjustments aren't available in FPS/RTS mode, because Black equalizer and Gamma settings conflict with each other (black equalizer adjusts the gamma of dark shades, while gamma adjusts the gamma of all shades).

Gamma 1 lowers ghosting for the same reason reducing contrast does. This is why Lightboost 24" monitors had virtually no ghosting in Lightboost mode, because the contrast ratio drops down to 350:1.
The 27" monitors wouldn't drop the contrast ratio in Lightboost (it remains around 850:1) which is why the overdrive ghosting was worse on the 27" monitors (when comparing Lightboost 27" to Lightboost 24").
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