SLI profiles and 3D vision
As i found some SLI default profiles to perform worst than "alternate frame rendering 2" SLI profile in some games for 3D Vision (just cause 2 for instance), i was wondering if SLI default profiles were mostly optimized for non 3D vision configs and if "alternate frame rendering 2" SLI profile would be the best fit for any given game to be played in 3D Vision. I'm not a techy guy but my guess is that in this mode, each eye rendering (either left or right) would be assigned to one specific card so that you would get in SLI 3D vision the same performance you had in regular 3D with only one card.

thanks to let me know if this fits your beliefs/experiences..
As i found some SLI default profiles to perform worst than "alternate frame rendering 2" SLI profile in some games for 3D Vision (just cause 2 for instance), i was wondering if SLI default profiles were mostly optimized for non 3D vision configs and if "alternate frame rendering 2" SLI profile would be the best fit for any given game to be played in 3D Vision. I'm not a techy guy but my guess is that in this mode, each eye rendering (either left or right) would be assigned to one specific card so that you would get in SLI 3D vision the same performance you had in regular 3D with only one card.



thanks to let me know if this fits your beliefs/experiences..

DX58SO2 Intel Board | i7-970 | SLI 2x Gigabyte GTX 970 4GB stock OC @ 1033/1111 Mhz | 12GB Mem | Windows 10 64bit driver 368.22 | 3D Vision | PJ6221 Viewsonic Projector

#1
Posted 09/28/2011 12:54 PM   
Can you give me some examples and I can check into it?
Can you give me some examples and I can check into it?

#2
Posted 09/28/2011 03:49 PM   
[quote name='andrewf@nvidia' date='28 September 2011 - 11:49 AM' timestamp='1317224947' post='1300106']
Can you give me some examples and I can check into it?
[/quote]
i gave a detailed account of my troubles in this [url="http://http://forums.nvidia.com/index.php?showtopic=209772&st=0&p=1290625&#entry1290625"]thread[/url]. but to make it quick, config i7-940 + sli 2x gtx 460 1gb @ stock clocks:

- portal 2 sli profile induces tearing/stuttering in 3d vision so i just disable it which is possible because sli is not really required for this game to get decent fps in 3d vision.

- just cause 2 default sli profile underperforms the "alternate frame rendering 2". it is very noticeable when looking around as it makes the scrolling much smoother with AFR2 but still 3d vision sli performance is far from single card performance without 3D vision which i can't explain ... a simple card is able to play smoothly JC2 @ highest settings @ 1024x768 with no AA, so why is it stuttering with 2 cards in 3d vision @ highest settings ? to get a decent experience i have to disable GPU water, disable SSAO, set shadows to low. the rendering is quite degraded...

- grid is stuttering every 5 to 10s in a way that makes the game unplayable.

evrything else is working great : BFBC2 @ HIGH AAx4, BLACK OPS @ HIGH AAx4, BATMAN AA @ HIGH, BURNOUT PARADISE @ HIGH, TOMB RAIDER UNDERWORLD @ HIGH, HAWX 2 @ HIGH.

thanks for your help!
[quote name='andrewf@nvidia' date='28 September 2011 - 11:49 AM' timestamp='1317224947' post='1300106']

Can you give me some examples and I can check into it?



i gave a detailed account of my troubles in this thread. but to make it quick, config i7-940 + sli 2x gtx 460 1gb @ stock clocks:



- portal 2 sli profile induces tearing/stuttering in 3d vision so i just disable it which is possible because sli is not really required for this game to get decent fps in 3d vision.



- just cause 2 default sli profile underperforms the "alternate frame rendering 2". it is very noticeable when looking around as it makes the scrolling much smoother with AFR2 but still 3d vision sli performance is far from single card performance without 3D vision which i can't explain ... a simple card is able to play smoothly JC2 @ highest settings @ 1024x768 with no AA, so why is it stuttering with 2 cards in 3d vision @ highest settings ? to get a decent experience i have to disable GPU water, disable SSAO, set shadows to low. the rendering is quite degraded...



- grid is stuttering every 5 to 10s in a way that makes the game unplayable.



evrything else is working great : BFBC2 @ HIGH AAx4, BLACK OPS @ HIGH AAx4, BATMAN AA @ HIGH, BURNOUT PARADISE @ HIGH, TOMB RAIDER UNDERWORLD @ HIGH, HAWX 2 @ HIGH.



thanks for your help!

DX58SO2 Intel Board | i7-970 | SLI 2x Gigabyte GTX 970 4GB stock OC @ 1033/1111 Mhz | 12GB Mem | Windows 10 64bit driver 368.22 | 3D Vision | PJ6221 Viewsonic Projector

#3
Posted 09/28/2011 05:02 PM   
i just wanted to thank you. last driver release (285.62) improved my 3D vision performance quite significantly in sli (2x gtx 460) on numerous games and especially with just cause 2 as i can now play it smoothly @ highest settings @ 1024x768 on default SLI profile (still have to disable GPU water though). Portal 2 last patch fixed the SLI 3D Vision issue and GRID stuttering seems to be related to i7-940 processor from what i read on several forums (have to disable hyperthreading and turbo boost in BIOS to make it smooth..what a pain!).

best regards.
i just wanted to thank you. last driver release (285.62) improved my 3D vision performance quite significantly in sli (2x gtx 460) on numerous games and especially with just cause 2 as i can now play it smoothly @ highest settings @ 1024x768 on default SLI profile (still have to disable GPU water though). Portal 2 last patch fixed the SLI 3D Vision issue and GRID stuttering seems to be related to i7-940 processor from what i read on several forums (have to disable hyperthreading and turbo boost in BIOS to make it smooth..what a pain!).



best regards.

DX58SO2 Intel Board | i7-970 | SLI 2x Gigabyte GTX 970 4GB stock OC @ 1033/1111 Mhz | 12GB Mem | Windows 10 64bit driver 368.22 | 3D Vision | PJ6221 Viewsonic Projector

#4
Posted 10/25/2011 12:21 PM   
i just want to let you know that latest beta (290.36) lost all the performances benefits i highlighted above in just cause 2(it's even worse than before the perf increase)...so please make sure this is corrected is the final release! thx!
i just want to let you know that latest beta (290.36) lost all the performances benefits i highlighted above in just cause 2(it's even worse than before the perf increase)...so please make sure this is corrected is the final release! thx!

DX58SO2 Intel Board | i7-970 | SLI 2x Gigabyte GTX 970 4GB stock OC @ 1033/1111 Mhz | 12GB Mem | Windows 10 64bit driver 368.22 | 3D Vision | PJ6221 Viewsonic Projector

#5
Posted 12/11/2011 10:21 PM   
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