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GSync + Multiple PGs in Surround + [Tri-]SLI

X-ROG
Level 15
Nvidia is preparing a future driver update to support Surround G-Sync (multiple monitors) with (Tri-)SLI. This is just a heads up (read: I can't comment further) for fans looking at buying multiple PGs that it is being worked on, and Nvidia will communicate this fully in their own time. Keep an eye on future betas change-log.

Basically - right now - you currently get 1 output per card. If you are only running 1 display then you get 2/3/4-way. If you need more outputs you have to turn off SLI. But this will change..
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21 REPLIES 21

NavasC wrote:
Question - if i have two monitors that are NOT DP (one is DVI, one is HDMI) that i want to use as multitasking monitors, all plugged into one card, I can still get SLI performance on the DP monitor?


MarshallR@ASUS wrote:
Yes, but as far as I know you have to disable the second monitor to be able to enable GSync for gaming. Since GSync has to run full screen you can't have one monitor running GSync and another 'normal'. Then your single GSync monitor will take advantage of SLI.


Are you sure about this? He meant he will use other monitors only for desktop usage and gsync will have fullscreen for games. I would really like to try it but since my PG278Q arrived i was unable to play anything 🙂 http://rog.asus.com/forum/showthread.php?50232-PG278Q-Nvidia-driver-340.52-WHQL-issues&p=425488#post...

icikk wrote:
Are you sure about this? He meant he will use other monitors only for desktop usage and gsync will have fullscreen for games. I would really like to try it but since my PG278Q arrived i was unable to play anything 🙂 http://rog.asus.com/forum/showthread.php?50232-PG278Q-Nvidia-driver-340.52-WHQL-issues&p=425488#post...


No, because Windows counts 'full screen' as the entire viewable desktop. Whether that's over 1 display or multiple is not considered in when rendering the desktop. To have 'half' the desktop viewable on another monitor would be considered 'windowed mode' and GSync won't run.

Is your TV turned on? I honestly don't know how you run GSync with it connected. Technically that should not work.

MarshallR@ASUS wrote:
No, because Windows counts 'full screen' as the entire viewable desktop. Whether that's over 1 display or multiple is not considered in when rendering the desktop. To have 'half' the desktop viewable on another monitor would be considered 'windowed mode' and GSync won't run.

Is your TV turned on? I honestly don't know how you run GSync with it connected. Technically that should not work.


I may have mistyped in my last post. I meant to say the game was running in full screen, not isn't. It's been edited.

I have the TV on when I'm playing games on my VG248QE. When I'm playing fullscreen games, the Menu on it states GSYNC at 144 Hz. However, the question now becomes, is my computer really taking advantage of SLI while doing this if this is a known problem?

If it's running in "Windowed" or "Windowed Borderless" however it states "Normal at 144 Hz" which I would take to mean GSYNC is not enabled in this set up.

If the Nvidia drivers show SLI enabled, it is enabled.

NavasC wrote:
If it's running in "Windowed" or "Windowed Borderless" however it states "Normal at 144 Hz" which I would take to mean GSYNC is not enabled in this set up.


That sounds right. Unfortunately there's no easy-to-see LED change on the VG for G-Sync.

MarshallR@ASUS wrote:
No, because Windows counts 'full screen' as the entire viewable desktop. Whether that's over 1 display or multiple is not considered in when rendering the desktop. To have 'half' the desktop viewable on another monitor would be considered 'windowed mode' and GSync won't run.

Is your TV turned on? I honestly don't know how you run GSync with it connected. Technically that should not work.


So i mananged to pinpoint every problem with my PG278Q. For the Fullscreen situation im veteran gamer so for me Fullscreen means fullscreen not borderless Windows. And i just tested it: If you run any game in Fullscreen (Exclusive fullscreen) you can run other monitors (for other purposes) from same card via dvi or hdmi and you will still be getting Gsync and SLI capabilty.

For OP. If you want to test if you Gsync is running try to run 3Dmark first with Gsync off and then with gsync on. I was getting about 25% lower scores with gsync on. I think that can help you to see if its actually runing in games 🙂

NavasC
Level 7
I was going to say, my modded VG248QE says "144 Hz in GSYNC" when running games in Fullscreen mode, and I have a 27" TV connected via HDMI as a second monitor. The game is running in fullscreen mode, but it sounds like you're suggesting while GSYNC may be running, it's not running/taking advantage of SLI?

Just wanted to confirm that. I suppose I could do my own test at home to be doubly sure. I guess the follow up question would be, if it performs like that on my VG248QE, can I expect the same behavior on the PG278Q?

X-ROG
Level 15
Nice work! Thanks for that 😄

Lunoc
Level 7
Hello ,

Win 8.1 , Hero IV Motherboard , GTX 780 and PG278Q here ... works wonderfull in all Mod`s with one Display
in 1440p @ 144hz and gsync is really a adventure .

...so my "problem" is, i have 3x PG278Q here, after buying today Adapter 5 and 6 wat also dont work like the others before i need a bit help.

What i need to bring all 3 Displays to work ? Graphiccard only has one DPport
...sooo do i need 2 special Adapters ? wich ones.. ? ... do i need 2 or 3 Graphiccards ? ,,,
atm it would be great if they run in 2D 60hz, 120hz or 144hz in Nvidia Surround, gsync atm dont work in tripple .. iknow ,

Thank u for answer and greetz from switzerland

Lunoc wrote:
Hello ,

Win 8.1 , Hero IV Motherboard , GTX 780 and PG278Q here ... works wonderfull in all Mod`s with one Display
in 1440p @ 144hz and gsync is really a adventure .

...so my "problem" is, i have 3x PG278Q here, after buying today Adapter 5 and 6 wat also dont work like the others before i need a bit help.

What i need to bring all 3 Displays to work ? Graphiccard only has one DPport
...sooo do i need 2 special Adapters ? wich ones.. ? ... do i need 2 or 3 Graphiccards ? ,,,
atm it would be great if they run in 2D 60hz, 120hz or 144hz in Nvidia Surround, gsync atm dont work in tripple .. iknow ,

Thank u for answer and greetz from switzerland


http://rog.asus.com/forum/showthread.php?49976-GSync-Multiple-PGs-in-Surround-Tri-SLI&p=423821&viewf...

Psychor
Level 7
MarshallR@ASUS wrote:
Nvidia is preparing a future driver update to support Surround G-Sync (multiple monitors) with (Tri-)SLI. This is just a heads up (read: I can't comment further) for fans looking at buying multiple PGs that it is being worked on, and Nvidia will communicate this fully in their own time. Keep an eye on future betas change-log.

Basically - right now - you currently get 1 output per card. If you are only running 1 display then you get 2/3/4-way. If you need more outputs you have to turn off SLI. But this will change..


Hi. Any update on this from Nvidia? Thanks.