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[TFT Central] Asus Prototype - The First 4K 144Hz Monitor with DP 1.3 - Page 3

post #21 of 151
Quote:
Originally Posted by BradleyW View Post

Why is it pointless? 4K gives a sharp image and 144Hz, even at very low fps, is far more fluid than 60Hz with the addition of less input delay and no tearing. It's a win win. People think you need high fps for 144Hz. This is simply not true. It's a myth, a lie, yet so many really believe it. Usually it's the people who don't own a 100/120/144Hz panel. As for 60Hz, anything below 60 fps really adds to the tearing, delay, motion blur and stuttering at this noticably slower refresh cycle.

It's not far more fluid. Motion blur is a function of fps, not refresh rate. You need more frames and more refreshes to make motion clarity increase.
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post #22 of 151
Quote:
Originally Posted by dubldwn View Post

Q
I'd imagine Big P will be out way before this is released, but GTX 1080 or certainly 1080 SLi could use this right now. Especially with g-sync. If you consider anything over 60 a benefit.



I dont think you fully understand how demanding 4k is and on top of that to add 144hz...

Big pascal and lol gtx 1080s in sli wont be able to do it thats for sure we a long way off from starbucks before making that happen...We getting to the point to where 4k can be done in most games at 60fps but still have a little ways to go..To add 144hz on that? Your gpu will start smoking flames trying it....In other words its not happening anytime soon
post #23 of 151
Quote:
Originally Posted by DETERMINOLOGY View Post

I dont think you fully understand how demanding 4k is and on top of that to add 144hz...

Big pascal and lol gtx 1080s in sli wont be able to do it thats for sure we a long way off from starbucks before making that happen...We getting to the point to where 4k can be done in most games at 60fps but still have a little ways to go..To add 144hz on that? Your gpu will start smoking flames trying it....In other words its not happening anytime soon

You don't need to drive your 144Hz monitor to 144 FPS to enjoy the benefits of higher refresh rates, benefits like a crispier image because of Pixel low Rise and Fall times, Overdrive feeding each pixel extra voltage for them to swap states.

You can game at 45 FPS on a 4K 144Hz and it will be leagues above the experience and image clarity you'll get from a 4K 60Hz monitor.

Then there are things that do have a refresh rate of 144Hz even if your game is running at 45 FPS, things like your mouse cursor if the game support Mouse Hardware Acceleration (Almost every game I play does), then there's the HUD and other things beside the game engine that benefits from setting the game at 4K 144Hz refresh rate.

Bottom line, higher refresh rates are and will always be better, no matter your usage
Quote:
Originally Posted by EniGma1987 View Post

They wont use DP1.4 though since there are no graphics cards that have a 1.4 port on them..

Correction: Polaris and Pascal does have a 1.4 HDR Ports, this is because 1.4 only difference with 1.3 DP is DSC and HDR support.



It would be silly for Nvidia to support DisplayPort 1.4, it would detair GTX 1080 users from upgrading to the next wave of cards, now sporting DP 1.4 tongue.gif /s

EDIT: Apparently DP 1.4 is the same as 1.3 but with DSC, a compression technique that allows 3 times more bandwitch than DP 1.3 on the same DP connection.
Edited by Dargonplay - 6/1/16 at 7:40pm
post #24 of 151
For fixed refresh rate displays such as this, it's always the best experience to run FPS at (V-Sync) or above the monitor's refresh rate. Once the FPS drops below the refresh rate, you introduce tearing and/or stuttering (or V-Sync drop FPS down at intervals). Basically the whole reason why G-Sync was invented was to run FPS lower than the max refresh rate smoothly.

BTW, Pascal does support DP 1.3 and 1.4 (identical physical bandwidth, 1.4 just uses compression). It just hasn't been certified as there are no DP 1.3/1.4 monitors to certify it with.
Edited by CallsignVega - 6/1/16 at 6:49pm
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post #25 of 151
Quote:
Originally Posted by CallsignVega View Post

For fixed refresh rate displays such as this, it's always the best experience to run FPS at (V-Sync) or above the monitor's refresh rate. Once the FPS drops below the refresh rate, you introduce tearing and/or stuttering (or V-Sync drop FPS down at intervals). Basically the whole reason why G-Sync was invented was to run FPS lower than the max refresh rate smoothly.

BTW, Pascal does support DP 1.3 and 1.4 (identical physical bandwidth, 1.4 just uses compression). It just hasn't been certified as there are no DP 1.3/1.4 monitors to certify it with.

I didn't knew that about DP 1.4, what kind of compression does it use? How does it works? Does it affects Image Quality in the slightest, even if we can't notice it? and how much extra Hertz could you cram with 1.4 because of compression for this 4K Display?
post #26 of 151
DisplayPort version 1.4 was published March 1, 2016. No new transmission modes are defined, so HBR3 (32.4 Gbit/s) as introduced in version 1.3 still remains as the highest available mode. DisplayPort 1.4 adds support for Display Stream Compression 1.2 (DSC), Forward Error Correction, HDR extension defined in CTA-861.3, the Rec. 2020 color space, and extends the maximum number of inline audio channels to 32.

DSC is a "visually lossless" encoding technique with up to 3:1 compression ratio. Using DSC with HBR3 transmission rates, DisplayPort 1.4 can support 8K UHD (7680×4320) at 60 Hz with 10-bit color and HDR, or 4K UHD (3840×2160) at 120 Hz with 10-bit color and HDR. 4K at 60 Hz with 10-bit color and HDR can be achieved without the need for DSC. On displays which do not support DSC, the maximum limits are unchanged from DisplayPort 1.3 (4K 120 Hz, 5K 60 Hz, 8K 30 Hz)
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post #27 of 151
Quote:
Originally Posted by Dargonplay View Post

I didn't knew that about DP 1.4, what kind of compression does it use? How does it works? Does it affects Image Quality in the slightest, even if we can't notice it? and how much extra Hertz could you cram with 1.4 because of compression for this 4K Display?

I haven't been able to find any info about how this compression actually works but it is "visually" lossless, not mathematically. mad.gif

Supposedly up to 3:1 compression, so if it could do 4K at 60Hz without it could do 4K at 180Hz with it.
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post #28 of 151
Quote:
Originally Posted by Asmodian View Post

I haven't been able to find any info about how this compression actually works but it is "visually" lossless, not mathematically. mad.gif

Supposedly up to 3:1 compression, so if it could do 4K at 60Hz without it could do 4K at 180Hz with it.

3 Times more bandwitch than DisplayPort 1.3 (No DSC basically) just because of compression? I find that extremely hard to believe, there has to be a downside, input lag, artifacts, blur... Something.
post #29 of 151
Ya I have my doubts about the compression. I think most computer displays that are DP 1.3 will use no compression and full 4:4:4 color. "Visually lossless" sounds like a marketing term to me lol.
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post #30 of 151
Ac
Quote:
Originally Posted by Dargonplay View Post

3 Times more bandwitch than DisplayPort 1.3 (No DSC basically) just because of compression? I find that extremely hard to believe, there has to be a downside, input lag, artifacts, blur... Something.

Well, there are artifacts and blur but not "noticeable" ones. wink.gif

It is actually common for mathematically lossless video compression to achieve 4:1 compression with 2:1 being the worst ratio I would expect with normal content. A lot of high end video editing is done in ProRes or similar "visually lossless" format so it isn't too bad.

Input lag must be higher with compression than without but with hardware encoding and decoding it could be very insignificant, it is something to watch.

The biggest downside is probably implementation costs.
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