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Nvidia announced G-Sync - eliminates stutter and screen tearing with a daughter module
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Hilbert Hagedoorn
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Default Nvidia announced G-Sync - eliminates stutter and screen tearing with a daughter module - 10-18-2013, 17:41 | posts: 19,558 | Location: Guru3D testlab

If you have been reading our blog today then you would have noticed that NVIDIA made several technology announcements the past two days. The first being G-Sync, a new techology with the help of new mo...

Nvidia announced G-Sync - eliminates stutter and screen tearing with a daughter module
   
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eclap
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Default 10-18-2013, 17:44 | posts: 24,303 | Location: Hampshire UK

Interesting and if it actually works then it could be a big selling point to all of us who are sensitive to things like that.
   
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Spets
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Default 10-18-2013, 17:44 | posts: 1,754

The descriptions of it make it sound pretty amazing, fluid gameplay even with fps drops
Would like to see it in action.
   
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BetA
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Default 10-18-2013, 17:44 | posts: 3,653 | Location: outside the Box...

Aha, i see a GTX780 Ti in that Pic....
interesting......
   
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proFits
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Default 10-18-2013, 17:45 | posts: 5,801 | Location: Montreal

Quote:
Originally Posted by eclap View Post
Interesting and if it actually works then it could be a big selling point to all of us who are sensitive to things like that.
Same though came to me. ''If it does what it says it does'' I'm buying it.
   
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moab600
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Default 10-18-2013, 17:48 | posts: 3,988 | Location: Israel

i have such an awesome monitor, s23a700d but if it does what it does i might sell it and buy something like it.
   
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Cyberdyne
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Default 10-18-2013, 17:48 | posts: 1,902 | Location: USA, Pennsylvania

Huh, so maybe it's like Lucid MVP only it will work.
   
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Default 10-18-2013, 17:54 | posts: 3,076 | Location: UK

So let me get this straight. You have to buy just a new monitor or a new monitor AND a new Nvidia card? Would it work with AMD if is a monitor thing?
   
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Default 10-18-2013, 17:54 | posts: 4 | Location: Estonia

This works only with NVidia cards?
   
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Default 10-18-2013, 17:57 | posts: 3,694 | Location: Sweden

g-spot, g-sync.........
   
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Default 10-18-2013, 17:57 | posts: 182 | Location: Szczecin

or more importantly, is it limited by panel technology? meaning, I love IPS screens, so if it comes for Twisted nematic then, well, screw you I don't care.
   
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Default 10-18-2013, 18:01 | posts: 22,485 | Location: Netherlands



















   
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Default 10-18-2013, 18:05 | posts: 3,393 | Location: Wooing whilst wearing only socks.

This is essentially another frame buffer that will store complete frames sent from the GPU(s) and then release them at the same timing. However, wouldn't this add another frame time worth of latency?
   
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Default 10-18-2013, 18:14 | posts: 15,585 | Location: US East Coast

Hopefully Hilbert will be able to give us more details about this later, but judging just by the article, it sounds like this would introduce more latency... AND, is NVidia going to restrict this to their GPUs only, or...

Quote:
Originally Posted by HeavyHemi View Post
This is essentially another frame buffer that will store complete frames sent from the GPU(s) and then release them at the same timing. However, wouldn't this add another frame time worth of latency?
I was wondering the same...


   
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yasamoka
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Default 10-18-2013, 18:14 | posts: 2,877 | Location: Lebanon

Quote:
Originally Posted by HeavyHemi View Post
This is essentially another frame buffer that will store complete frames sent from the GPU(s) and then release them at the same timing. However, wouldn't this add another frame time worth of latency?
Wouldn't that be a redundant function as that's what VSync does on the GPU side? This seems to enable a "dynamic refresh rate" so that the monitor refreshes as soon as a new frame is available, being in sync with the GPU, rather than the other way around (VSync) or being not synced (VSync off).

Of course, the monitor would have a limit, but this means that the disadvantage of VSync, a frame of latency, would be solved as the GPU is drawing directly onto the screen now, and the disadvantages of VSync off which is tearing and stutter (below refresh rate) and jitter (above refresh rate) would be eliminated.
   
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sykozis
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Default 10-18-2013, 18:21 | posts: 15,585 | Location: US East Coast

Quote:
Originally Posted by yasamoka View Post
Wouldn't that be a redundant function as that's what VSync does on the GPU side? This seems to enable a "dynamic refresh rate" so that the monitor refreshes as soon as a new frame is available, being in sync with the GPU, rather than the other way around (VSync) or being not synced (VSync off).

Of course, the monitor would have a limit, but this means that the disadvantage of VSync, a frame of latency, would be solved as the GPU is drawing directly onto the screen now, and the disadvantages of VSync off which is tearing and stutter (below refresh rate) and jitter (above refresh rate) would be eliminated.
The article makes it sound as if this is a secondary framebuffer that's part of the monitor. I don't see where it says anything about having a dynamic refresh rate.


   
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yasamoka
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Default 10-18-2013, 18:32 | posts: 2,877 | Location: Lebanon

Quote:
As soon as the framebuffer is complete it will update the screen, eliminating tearing and stutter.
This screams non-isochronous display updates which Carmack talked about sometime earlier and elaborated on in QuakeCon 2013.
   
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Default 10-18-2013, 19:01 | posts: 139

I don't know about you guys but i have exactly the same problem with stuttering like on that video. I always thought my hardware is broken or something , i changed every single part in my PC but no luck.. Seems like its something else , little sad i need a brand
new ''g-sync'' monitor to fix that problem.
   
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Default 10-18-2013, 19:02 | posts: 171

Finally, I have been waiting for ages for developers to acknowledge this problem with v sync. I guess the majority of people cannot notice the shutter, but I definitly do when the scene is in motion, I am glad Nvidia has finally addressed this issue. I will be happy to have this when I purchase my 1440p or 4k display.
   
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Default 10-18-2013, 19:05 | posts: 495 | Location: UK

Seems very gimmicky this event. I wonder if any of it actually works? And the 780ti is a huge waste of time. Gonna wait until Maxwell before I upgrade.
   
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MM10X
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Default 10-18-2013, 19:15 | posts: 4,171 | Location: Oakland, CA, US

Skribby at Overlord has an article about it with some insight on how it works.

He is hoping to create an add-in board for existing monitors as well as releasing IPS 1440p panels with this tech. Apparently he tried it out and it was quite good.


It is dynamic refresh rate control based on GPU rendering times. Monitor refreshes as soon as a frame is available.
   
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S3nt3nc3
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Default 10-18-2013, 19:23 | posts: 254 | Location: far away from u

I see one potential downside of it.
Eye strain.
It takes me quite a while to get used to a monitor with a different refresh rate. My eyes hurt after 10-15 minutes even when i change refresh rate form 60 to 65 Hz and vice versa.
Can't even imagine how bad it might be when it will fluctuate between 40~120Hz.
   
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MM10X
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Default 10-18-2013, 19:58 | posts: 4,171 | Location: Oakland, CA, US

@S3nt3nc3, I believe this is a smaller amount of people who have this issue. Personally, I can swap around refresh rates and the higher it gets the more comfortable my eyes feel. As its refresh as soon as the frame becomes available ... I don't see the low refresh rate being a problem.

I do see your point though.
   
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Default 10-18-2013, 20:24 | posts: 319 | Location: HOMELESS

Thank **** this issue is finally getting more attention. As long as this doesn't have any significant downsides, I will be upgrading to have this.

I ALWAYS use vsync as tearing and stuttering are the bane of my enjoyment. Even with vsync I noticed this issue and had given up hope there might ever be some solution. My goal the past generation has been 60fps @ 1080p and seeing drops into the 40s and 50s which should have been ok, have been agonizing. I thought I was going crazy, but this just confirms the issue with the technology at present.

This is a step in the right direction and I am sold. I just really hope this isn't a software limited technology like the crap from Lucid. Good ideas ruined by crappy software and no development support.

Last edited by wasteomind; 10-18-2013 at 20:35.
   
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Default 10-18-2013, 20:44 | posts: 273

Sounds like this eliminates the necessity of driver or programming optimization. If the gameplay is fluid enough fps has been completely removed from any argument.
   
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