3d vision with 3way sli is it fixed?
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That sucks. Does anyone know what kind of performance boost I would get by having a 3rd GTX 680 dedicated to PhysX?
That sucks. Does anyone know what kind of performance boost I would get by having a 3rd GTX 680 dedicated to PhysX?

#16
Posted 03/28/2012 08:12 PM   
GTX 680 SLI review

http://www.guru3d.com/news.html#15512
GTX 680 SLI review



http://www.guru3d.com/news.html#15512

4770k @ 4.2 Water cooled
32 Gigs DDR 3 2400
GTX Titan X SLI
Obsidian 800D
EVGA 1300 watt
1 Terabyte SSD raid 0
ASUS 27 inch 3D monitor 3D vision 2.

#17
Posted 03/28/2012 08:24 PM   
[quote name='Siberian_Khatru' date='28 March 2012 - 10:24 PM' timestamp='1332966261' post='1389201']
GTX 680 SLI review

http://www.guru3d.com/news.html#15512
[/quote]

I don't think they have tested and benchmarked with 3D-Vision enabled, have they?
[quote name='Siberian_Khatru' date='28 March 2012 - 10:24 PM' timestamp='1332966261' post='1389201']

GTX 680 SLI review



http://www.guru3d.com/news.html#15512





I don't think they have tested and benchmarked with 3D-Vision enabled, have they?

#18
Posted 05/26/2012 03:52 PM   
Andrew, do you care to give us an update if 3way sli works correctly now with 3dvision, or should we sell our 3rd card? Last tests show a minimal performance increase by using 3 cards in sli.[quote="andrewf@nvidia"][quote name='ERP' date='07 April 2011 - 06:22 PM' timestamp='1302218526' post='1221085']<br> According to the driver release notes 3 Way SLI is slower than 2 Way, but I haven't confirmed.<br> [/quote]<br> <br> Currently in 3-way SLI we allocate the third GPU to PhysX. So 3-way SLI wont be slower in 2-way, but it could be faster with PhysX games.[/quote]
Andrew, do you care to give us an update if 3way sli works correctly now with 3dvision, or should we sell our 3rd card? Last tests show a minimal performance increase by using 3 cards in sli.
andrewf@nvidia said:[quote name='ERP' date='07 April 2011 - 06:22 PM' timestamp='1302218526' post='1221085']<br>
According to the driver release notes 3 Way SLI is slower than 2 Way, but I haven't confirmed.<br>
<br>
<br>
Currently in 3-way SLI we allocate the third GPU to PhysX. So 3-way SLI wont be slower in 2-way, but it could be faster with PhysX games.

Videocards: 3xEVGA Geforce GTX660TI SC 3GB in 3way SLI; Processor: Intel Core i7 970 (6 cores) @4.2GHz (200x21 HT ON, TB OFF); Cooler: Thermalright Ultra-120 eXtreme 1366 RT Rev. C; Mainboard: EVGA X58 SLI Classified E760; Memory: 3x4GB DDR3 Mushkin Redline; Storage OS: Samsung 840 Pro SSD; Storage Games: 2xWD Velociraptor in RAID-0; Soundcard: Creative X-Fi Titanium Fatality; Speakers: Klipsch ProMedia 4.1; OS: Windows 8 Pro 64bit with Media Center

#19
Posted 03/14/2013 11:56 PM   
Anyone from Nvidia care to give us an update here about 3way sli not using all 3 cards with 3dvsion enabled, after we spent our money to have 3 cards in our systems?
Anyone from Nvidia care to give us an update here about 3way sli not using all 3 cards with 3dvsion enabled, after we spent our money to have 3 cards in our systems?

Videocards: 3xEVGA Geforce GTX660TI SC 3GB in 3way SLI; Processor: Intel Core i7 970 (6 cores) @4.2GHz (200x21 HT ON, TB OFF); Cooler: Thermalright Ultra-120 eXtreme 1366 RT Rev. C; Mainboard: EVGA X58 SLI Classified E760; Memory: 3x4GB DDR3 Mushkin Redline; Storage OS: Samsung 840 Pro SSD; Storage Games: 2xWD Velociraptor in RAID-0; Soundcard: Creative X-Fi Titanium Fatality; Speakers: Klipsch ProMedia 4.1; OS: Windows 8 Pro 64bit with Media Center

#20
Posted 04/04/2013 12:25 PM   
Did you get a chance to try the downsampling one more time? If you can get that to work, you can answer this question directly. I sent you a detailed look via PM. The downsampling should work on any monitor, because there is no way for the monitor to know that anything is different. I'm quite interested in the answer to 3-way as well. I'm dying to hear your results.
Did you get a chance to try the downsampling one more time? If you can get that to work, you can answer this question directly.

I sent you a detailed look via PM. The downsampling should work on any monitor, because there is no way for the monitor to know that anything is different.

I'm quite interested in the answer to 3-way as well. I'm dying to hear your results.

Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers

#21
Posted 04/05/2013 12:11 AM   
The downsampling method does not work on 3dvsion monitors.
The downsampling method does not work on 3dvsion monitors.

Videocards: 3xEVGA Geforce GTX660TI SC 3GB in 3way SLI; Processor: Intel Core i7 970 (6 cores) @4.2GHz (200x21 HT ON, TB OFF); Cooler: Thermalright Ultra-120 eXtreme 1366 RT Rev. C; Mainboard: EVGA X58 SLI Classified E760; Memory: 3x4GB DDR3 Mushkin Redline; Storage OS: Samsung 840 Pro SSD; Storage Games: 2xWD Velociraptor in RAID-0; Soundcard: Creative X-Fi Titanium Fatality; Speakers: Klipsch ProMedia 4.1; OS: Windows 8 Pro 64bit with Media Center

#22
Posted 04/05/2013 09:46 PM   
OK, bummer. It doesn't make logical sense that the monitor would be able to tell any difference, because the frequency should still be exactly 1680x1050x120Hz. But I'll take your word for it. Looks like it can be done, but perhaps only in unusual setups. Like using 80Hz instead of 120Hz on the ASUS VG278H. And not at all with Asus VG236H. People use the words supersampling and downsampling in a variety of random ways though, so I'm not sure this is talking about the same thing. [url]http://extreme.pcgameshardware.de/monitore/220860-downsampling-auf-asus-vg278h.html[/url] What monitor do you run?
OK, bummer. It doesn't make logical sense that the monitor would be able to tell any difference, because the frequency should still be exactly 1680x1050x120Hz. But I'll take your word for it.


Looks like it can be done, but perhaps only in unusual setups. Like using 80Hz instead of 120Hz on the ASUS VG278H. And not at all with Asus VG236H. People use the words supersampling and downsampling in a variety of random ways though, so I'm not sure this is talking about the same thing.

http://extreme.pcgameshardware.de/monitore/220860-downsampling-auf-asus-vg278h.html

What monitor do you run?

Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers

#23
Posted 04/08/2013 12:02 AM   
[quote="bo3b"]OK, bummer. It doesn't make logical sense that the monitor would be able to tell any difference, because the frequency should still be exactly 1680x1050x120Hz. But I'll take your word for it. Looks like it can be done, but perhaps only in unusual setups. Like using 80Hz instead of 120Hz on the ASUS VG278H. And not at all with Asus VG236H. People use the words supersampling and downsampling in a variety of random ways though, so I'm not sure this is talking about the same thing. [url]http://extreme.pcgameshardware.de/monitore/220860-downsampling-auf-asus-vg278h.html[/url] What monitor do you run?[/quote] Samsung 3dvision, and as long as I play almost everything with 3dglasses going below 120 hz is not an option for me.
bo3b said:OK, bummer. It doesn't make logical sense that the monitor would be able to tell any difference, because the frequency should still be exactly 1680x1050x120Hz. But I'll take your word for it.


Looks like it can be done, but perhaps only in unusual setups. Like using 80Hz instead of 120Hz on the ASUS VG278H. And not at all with Asus VG236H. People use the words supersampling and downsampling in a variety of random ways though, so I'm not sure this is talking about the same thing.

http://extreme.pcgameshardware.de/monitore/220860-downsampling-auf-asus-vg278h.html

What monitor do you run?


Samsung 3dvision, and as long as I play almost everything with 3dglasses going below 120 hz is not an option for me.

Videocards: 3xEVGA Geforce GTX660TI SC 3GB in 3way SLI; Processor: Intel Core i7 970 (6 cores) @4.2GHz (200x21 HT ON, TB OFF); Cooler: Thermalright Ultra-120 eXtreme 1366 RT Rev. C; Mainboard: EVGA X58 SLI Classified E760; Memory: 3x4GB DDR3 Mushkin Redline; Storage OS: Samsung 840 Pro SSD; Storage Games: 2xWD Velociraptor in RAID-0; Soundcard: Creative X-Fi Titanium Fatality; Speakers: Klipsch ProMedia 4.1; OS: Windows 8 Pro 64bit with Media Center

#24
Posted 04/08/2013 01:29 PM   
Does anyone know if this has changed? Is the 3rd GPU when using 3D Vision with 3-way SLI, still dedicated to PhysX?
Does anyone know if this has changed?

Is the 3rd GPU when using 3D Vision with 3-way SLI, still dedicated to PhysX?

#25
Posted 06/05/2013 02:49 AM   
Really? So in my 3 X 680 machine, the 3rd card is not doing anything but physX? Boy, I missed that education along the line somewhere, I always thought it "picked up" the PhysX. Huh. If that's the case, then I should toss in a 670 or something in the 4th slot and let that do the PhysX? ?? Thanks,
Really? So in my 3 X 680 machine, the 3rd card is not doing anything but physX? Boy, I missed that education along the line somewhere, I always thought it "picked up" the PhysX. Huh. If that's the case, then I should toss in a 670 or something in the 4th slot and let that do the PhysX?

?? Thanks,

#26
Posted 06/05/2013 03:52 AM   
As far as I know, If you are stereoscopic gaming only 2-way SLI is active. If you have 3-way SLI the third GPU becomes a dedicated PhysX GPU. So if you only game in 3D, you would be better off using a cheap GPU with little power draw. No use putting hours on a high dollar card if it's barely doing anything and you can use a $100 GPU. A list of PhysX capable GPUs http://www.lagom.nl/lcd-test/white.php Of course this may have changed, I've never read anything different though.
As far as I know, If you are stereoscopic gaming only 2-way SLI is active.

If you have 3-way SLI the third GPU becomes a dedicated PhysX GPU.

So if you only game in 3D, you would be better off using a cheap GPU with little power draw. No use putting hours on a high dollar card if it's barely doing anything and you can use a $100 GPU.

A list of PhysX capable GPUs http://www.lagom.nl/lcd-test/white.php

Of course this may have changed, I've never read anything different though.

#27
Posted 06/05/2013 04:16 AM   
Hey, Thanks D-Man for poking at this. I can't game in 2D anymore... so yes, 3D. I forgot I already had a 610 in slot 4 (for extra monitor that I really don't use anyway). Guess there isn't a whole heck of a lot of PhysX games out there. I see Metro: Last Light is. I'm gonna do some benchmarks in the next couple days and see what I get. Reverting. Thanks again,
Hey, Thanks D-Man for poking at this. I can't game in 2D anymore... so yes, 3D.

I forgot I already had a 610 in slot 4 (for extra monitor that I really don't use anyway). Guess there isn't a whole heck of a lot of PhysX games out there. I see Metro: Last Light is.

I'm gonna do some benchmarks in the next couple days and see what I get. Reverting.

Thanks again,

#28
Posted 06/05/2013 04:38 AM   
I dug around a fair amount, and I think that it is likely that NVidia has since fixed this problem. There aren't direct benchmarks to be found, because game sites tend to be too stupid to run 3D Vision tests. There are some hints that it might be fixed. It's not clear to me if this works for AFR type SLI, which is presumably hard with 3 cards and two eyes. But I'd definitely expect it to work for SFR. @djb, maybe you can do the experiment instead. (Unstrain could not be bothered to try it out) If you do SuperSampling, you can run a much larger virtual screen than physical screen. That's a good way to push the bottleneck to the video cards, and make it clear if 3 cards are making a difference.
I dug around a fair amount, and I think that it is likely that NVidia has since fixed this problem. There aren't direct benchmarks to be found, because game sites tend to be too stupid to run 3D Vision tests. There are some hints that it might be fixed.

It's not clear to me if this works for AFR type SLI, which is presumably hard with 3 cards and two eyes. But I'd definitely expect it to work for SFR.


@djb, maybe you can do the experiment instead. (Unstrain could not be bothered to try it out)

If you do SuperSampling, you can run a much larger virtual screen than physical screen. That's a good way to push the bottleneck to the video cards, and make it clear if 3 cards are making a difference.

Acer H5360 (1280x720@120Hz) - ASUS VG248QE with GSync mod - 3D Vision 1&2 - Driver 372.54
GTX 970 - i5-4670K@4.2GHz - 12GB RAM - Win7x64+evilKB2670838 - 4 Disk X25 RAID
SAGER NP9870-S - GTX 980 - i7-6700K - Win10 Pro 1607
Latest 3Dmigoto Release
Bo3b's School for ShaderHackers

#29
Posted 06/05/2013 09:22 AM   
bo3b, afraid I'm not that bright following you on testing with supersampling. I did switch the PhysX from my 3rd sli card to the 4th stand alone gtx610 and ran Unique Heaven in 3d and there was no change in FPS. I tend to agree that it would be fixed or there would be more chatter. I guess I wonder then how much gpu power for PhysX would a game like Metro Last Light take and if a 610 would be enough. The GPU tech side certainly isn't my forte. Back to the supersampling though for resolution, I do find that fascinating and will check that out because running surround3D, you only at 2XAA. Thank you!, Rampage IV Extreme/bios 3010/3960K/Win7 64/Pro 16GB G.Skill F3-14900CL9D-8GBSR 3 X EVGA GTX 680/4GB, 04G-P4-2686-KR 3 X ASUS VG Series VG278H - Surround 3D 1 X EVGA GT 610 2 GB, 02G-P3-2617-KR 1 X Planar SA2311W
bo3b, afraid I'm not that bright following you on testing with supersampling.

I did switch the PhysX from my 3rd sli card to the 4th stand alone gtx610 and ran Unique Heaven in 3d and there was no change in FPS. I tend to agree that it would be fixed or there would be more chatter. I guess I wonder then how much gpu power for PhysX would a game like Metro Last Light take and if a 610 would be enough. The GPU tech side certainly isn't my forte.

Back to the supersampling though for resolution, I do find that fascinating and will check that out because running surround3D, you only at 2XAA.

Thank you!,

Rampage IV Extreme/bios 3010/3960K/Win7 64/Pro
16GB G.Skill F3-14900CL9D-8GBSR
3 X EVGA GTX 680/4GB, 04G-P4-2686-KR
3 X ASUS VG Series VG278H - Surround 3D
1 X EVGA GT 610 2 GB, 02G-P3-2617-KR
1 X Planar SA2311W

#30
Posted 06/07/2013 05:02 AM   
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