Blur reduction and 240Hz monitors

Motion blur eliminating strobe backlights found in gaming monitors. This includes NVIDIA LightBoost, Ultra Low Motion Blur (ULMB), EIZO Turbo240, ToastyX Strobelight utility, etc.

Blur reduction and 240Hz monitors

Postby Paul » 09 Nov 2016, 12:08

Hello.
I'm a Benq XL2720Z user, and I absolutely love the blur reduction option and being able to adjust strobe values to get the least amount of blur possible. It's brilliant and gives much better view of what's going on in fast-paced games, at least in my experience.

I'm pretty interested in getting one of the three 240Hz monitors (either Benq XL2540, Acer XB251HQT or Asus PG258Q) that will be coming out soon(tm). My question is, will any of these monitors have a similar option that will greatly reduce motion blur? If they don't, would you consider it worth upgrading from 144Hz (with blur reduction) to 240Hz (no blur reduction)?

Let's agree not to discuss whether my PC is fast enough to produce 240Hz. It may not be now, but surely will be in the future.
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Re: Blur reduction and 240Hz monitors

Postby Falkentyne » 09 Nov 2016, 18:52

The 240hz Benq does not have any blur reduction whatsoever. I assume it was removed due to the problems with blur reduction on the freesync monitors (XL2730Z), which is why the XL2735 has blur reduction (VT tweaks work again to reduce crosstalk) but NO adaptive sync.

I know nothing about the other two panels but I assume if they are Gsync they may have ULMB, but don't quote me on that.
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Re: Blur reduction and 240Hz monitors

Postby Paul » 10 Nov 2016, 13:17

Would be great if they had ULMB, but I guess we'll have to wait for more info. There's barely anything on the web about those monitors at the moment.

Also such a shame that Benq XL2540 won't have G-Sync and won't have blur reduction.
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Re: Blur reduction and 240Hz monitors

Postby Erecshyrinol » 10 Nov 2016, 17:25

Why the hell does the XL2540 have no BBR?
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Re: Blur reduction and 240Hz monitors

Postby Q83Ia7ta » 11 Nov 2016, 03:14

Erecshyrinol wrote:Why the hell does the XL2540 have no BBR?
To sell you 240Hz with BBR later. Just business.
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Re: Blur reduction and 240Hz monitors

Postby lexlazootin » 11 Nov 2016, 07:52

I thought the XL2540 doesn't have FreeSync?

This is a very weird case that i feel like the only reason they don't have it is because they were having problems with it at 144+

I've got a good feeling that you're still going to be able to force enable it. but knowing Benq, who the hell knows.
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Re: Blur reduction and 240Hz monitors

Postby Paul » 11 Nov 2016, 10:31

lexlazootin wrote:I thought the XL2540 doesn't have FreeSync?

This is a very weird case that i feel like the only reason they don't have it is because they were having problems with it at 144+

I've got a good feeling that you're still going to be able to force enable it. but knowing Benq, who the hell knows.


IIRC Benq said nothing about Freesync, while AMD said that XL2540 will support freesync.
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Re: Blur reduction and 240Hz monitors

Postby Q83Ia7ta » 11 Nov 2016, 12:40

Paul wrote:IIRC Benq said nothing about Freesync, while AMD said that XL2540 will support freesync.
Search "sync" in BenQ's manual http://webshop.eltele.no/pdf/01340F82-C ... 3FE741.pdf
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Re: Blur reduction and 240Hz monitors

Postby Chief Blur Buster » 25 Nov 2016, 16:18

A 240Hz monitor should be able to provide vastly lower-lag strobe-based blur reduction. Assuming we're not yet hitting GtG limitations, we may have to add +1ms to +1.5ms to blanking intervals to allow for enough pauses between refresh cycles to permit reliable strobing (Something like a 1ms pause period for GtG transition completion, and 0.5ms strobe length).

This would mean a reduction of refresh rate to around 175Hz-200Hz in order to permit strobing without too excessive strobe crosstalk. At 200Hz, an optimal implementation of strobing would add only 2.5 milliseconds to the center of the screen.

But the first 240Hz monitors will not include strobing, it's probably easier to get the monitors out now, and deal with optimizing strobing later.

Many vendors don't want what happened to the early models of XL2720Z (version 1) with the ugly strobe crosstalk of a mis-timed strobe that's either too early or too late (strobing mid-refresh of either the previous/next refresh cycles, instead of more perfectly between refreshes).
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Re: Blur reduction and 240Hz monitors

Postby Falkentyne » 25 Nov 2016, 17:04

Chief,

How does the Samsung C24FG70 achieve strobing with absolutely **ZERO** Crosstalk at only 144hz?

The only reason I didn't purchase that monitor was because it double strobes at 60hz (I refuse to buy anything that won't single strobe that low) and the purple overdrive transitions on "Low" RGB values (this was tested, dark shades cause it).

Image

This is NOT the best picture nor does it show the worst part of where crosstalk would be--the very edges...the tester didn't make the test FULL SCREEN with F11 and then drag the UFO's to cover the entire screen! But everyone who tested it says there are no strobe crosstalk artifacts (or at least not noticeable) at 144hz...
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