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LightBoost, G-SYNC, Turbo240: 120Hz Strobe Backlight LCDs / No Motion Blur! - Page 117

post #1161 of 2929
Thread Starter 
Quote:
Originally Posted by sharp View Post

Which 27" would you recomend if you had to buy one now? (not interested in 24" models)
Asus VG278H -- Still the good old standby. But it includes the 3D glasses which you don't want.
Asus VG278HE -- Three people reported it had more artifacts than than VG278H.
BENQ XL2720T -- Good reports now. Needs new the buggy 320.18 drivers for much better color.
Acer HN274H -- Not much data on these. Don't confuse it with HN274H (no LB) and HN274HB (LB) Both suffixed by "bmiiid". So the LB model is HN274HBbmiiid. Confusing, eh?

The list of monitors that supports LightBoost is at the top of the LightBoost HOWTO.
post #1162 of 2929
I am having issues with SC2 and this. Everytime I load up a game it goes into 3D mode and I try Ctrl+T and it flashes and still stays in 3D. Any ideas ? Thanks
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post #1163 of 2929
Quote:
Originally Posted by mdrejhon View Post

Yep, a $50 nVidia card activates LightBoost for a $600 AMD card thumb.gif

Can I use a 20$ Nvidia card?
Does it have to be a specific model, or would any nvidia card do?
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post #1164 of 2929
Hi mdrejhon, I'd like to thank you for all the hard work you've put into researching the characteristics of LightBoost. It seems like a godsend to FPS fanatics like me.

Unfortunately, I'm experiencing either ghosting or double-image artifacts when enabling LightBoost @ 120 Hz on my ASUS VG248QE. I've made sure to follow your instructions to the letter using Option B (ToastyX CRU). I'm certain that I've successfully enabled LightBoost since there is a very noticeable improvement from LightBoost-disabled Reduced 144 Hz to LightBoost-enabled 120 Hz.

Concerning the double image, it is most noticeable during the Streaky Pictures Test in PixPerAn. The car is simply a double image with color that is slightly faded. The areas of the picture where the double image overlaps have the brightest color. I've also tried the Readability Test and the letters produce ghosting at faster tempos (7-8). The strangest thing is that LightBoost-disabled Reduced 144 Hz produces considerable motion blur, yet there is no double image at all.

I've tried changing the LightBoost values within my monitor's OSD, but there is no difference between zero and max (besides dimming/brightening the screen). Is there anything I can do in order to get rid of this ghosting/double image using LightBoost? In order to clarify, it looks very similar to the left image below:


Edited by Karnaj - 6/20/13 at 8:58pm
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post #1165 of 2929
Thread Starter 
The LightBoost double-image trailing artifact is a common LightBoost artifact, and is normal. But it should not be very intense, or easily noticeable in games.
(The double-image sharp ghost should be far fainter; roughly the same intensity as 3D crosstalk)

-- It varies between different models of monitors
-- It will become less intense if you lower your Contrast setting in your monitor's OSD. If you were using 80, try 65. If you were using 65, try 50.
-- If this problem remains, try testing 100 Hz LightBoost

Adjusting LightBoost setting only slightly improves motion blur (you can see 1 pixel of motion blur in "I NEED MORE SOCKS" at 100% or OFF, but this eliminates itself if you set it to "10%" or "20%") and has almost no effect on the double ghost. But adjusting your Contrast setting will help reduce your double ghost effect. Also, the double ghost effect is worse along the bottom edge of the screen than along the center of the screen; due to less time for pixel transitions.

As a rule of thumb, the LightBoost ghost should be only ~5% faint (or less) along the center band of the screen, on a very good VG248QE or XL2411T, with a reduced Contrast setting. If the strength of the LightBoost double ghost is unusually strong, you may have a defective monitor.

On my XL2411T, there is virtually no LightBoost double ghost along the center band of the screen -- it's a near-perfect LightBoost effect. However, along the bottom edge of the screen, it is more visible. My VG278H is not as good as the XL2411T in eliminating the LightBoost faint double-image effect but I prefer the VG278H due to its better colors.
post #1166 of 2929
A double image indicates the frame rate is 60 FPS. You're seeing a double image because each frame is being strobed twice at 120 Hz. You'll need to find out why the frame rate is being limited.

Some ghosting towards the bottom of the screen is normal, similar to the image on the right except fainter.
post #1167 of 2929
Thread Starter 
Quote:
Originally Posted by ToastyX View Post

A double image indicates the frame rate is 60 FPS. You're seeing a double image because each frame is being strobed twice at 120 Hz. You'll need to find out why the frame rate is being limited.
Good catch.

But the poster said that one ghost image is fainter than the other. The LightBoost trailing sharp ghost should be faint -- only 1% to 5% intensity, tops. Some monitors (XL2420T) have it worse than others (XL2411T).

HOWEVER... if the double image effect is equally strong, then it's definitely a 60fps@120Hz issue.

If it's almost as strong (e.g. 25% or 50% strong) and you see the double image clearly in all games (even older source engine games), and you are very very very certain it's not the 60fps@120Hz effect, then your LightBoost is probably defective. (I'm of course, talking specifically about VG248QE and XL2411T which doesn't have much LightBoost trailing)

If you are using the stereoscopic Control+T method, try ramming Control+T several times -- sometimes it 'unsticks' the 60fps@120Hz into 120fps@120Hz. However, it's best to disable the stereoscopic 3D checkbox if you've already setup lightboost via ToastyX method.
Edited by mdrejhon - 6/21/13 at 8:47am
post #1168 of 2929
Quote:
Originally Posted by General123 View Post

I am having issues with SC2 and this. Everytime I load up a game it goes into 3D mode and I try Ctrl+T and it flashes and still stays in 3D. Any ideas ? Thanks

SC2 is a bit silly.

You need to disable it in the game's options menu.
post #1169 of 2929
Quote:
Originally Posted by mdrejhon View Post

Good catch.

But the poster said that one ghost image is fainter than the other. The LightBoost trailing sharp ghost should be faint -- only 1% to 5% intensity, tops. Some monitors (XL2420T) have it worse than others (XL2411T).

HOWEVER... if the double image effect is equally strong, then it's definitely a 60fps@120Hz issue.

If it's almost as strong (e.g. 25% or 50% strong) and you see the double image clearly in all games (even older source engine games), and you are very very very certain it's not the 60fps@120Hz effect, then your LightBoost is probably defective. (I'm of course, talking specifically about VG248QE and XL2411T which doesn't have much LightBoost trailing)

If you are using the stereoscopic Control+T method, try ramming Control+T several times -- sometimes it 'unsticks' the 60fps@120Hz into 120fps@120Hz. However, it's best to disable the stereoscopic 3D checkbox if you've already setup lightboost via ToastyX method.

How much of a difference is the vg278HE and vg248qe when lightboost is on? I have the 278HE version and I'm tempted to buy the smaller 248qe version and try to sell this monitor. Need to know if it would be worth it?
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post #1170 of 2929
Thread Starter 
Quote:
Originally Posted by writer21 View Post

How much of a difference is the vg278HE and vg248qe when lightboost is on? I have the 278HE version and I'm tempted to buy the smaller 248qe version and try to sell this monitor. Need to know if it would be worth it?
VG278HE has worse LightBoost trailing artifact than the VG248QE. The VG248QE is generally one of the stellar specimens in having very clean LightBoost motion (zero blur, zero ghosting, zero overdrive) -- at least along the center band of the screen. However, the VG278HE supposedly has significantly better color than the VG248QE. So it's a tradeoff.
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