Just installed two GTX560Ti SLI, and while benchmarking programs like Heaven DX11 and 3d Mark 11 show 2x performance in SLI mode versus 1 card, Bad Company 2 runs just as poorly with SLI as it does with just 1 card when 3d vision is on. I think my old GTX260's did better than this. Using 266.66 drivers. With 3D Vision enabled in control panel but disabled in-game, I'm locked at 60fps because of VSYNC, and that's with just 1 card. So you figure SLI, turn on 3d Vision, and you should see about 60 as well. Nope. I can turn detail to LOW, doesn't matter, I get 30-45fps and my GPU's just sit back and relax at 30-40%. Not sure if it's specific to the 560 or not, but I could use a new driver to fix this. Processor is i5 @ 3.6Ghz, so no problem there. The game looks amazing in 3d, except for the slow choppy behavior. Can't try any driver older than 266.58 because of needing 560 support. Any ideas are welcome. Thanks.
Just installed two GTX560Ti SLI, and while benchmarking programs like Heaven DX11 and 3d Mark 11 show 2x performance in SLI mode versus 1 card, Bad Company 2 runs just as poorly with SLI as it does with just 1 card when 3d vision is on. I think my old GTX260's did better than this. Using 266.66 drivers. With 3D Vision enabled in control panel but disabled in-game, I'm locked at 60fps because of VSYNC, and that's with just 1 card. So you figure SLI, turn on 3d Vision, and you should see about 60 as well. Nope. I can turn detail to LOW, doesn't matter, I get 30-45fps and my GPU's just sit back and relax at 30-40%. Not sure if it's specific to the 560 or not, but I could use a new driver to fix this. Processor is i5 @ 3.6Ghz, so no problem there. The game looks amazing in 3d, except for the slow choppy behavior. Can't try any driver older than 266.58 because of needing 560 support. Any ideas are welcome. Thanks.
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
[quote name='3DVision' date='05 March 2011 - 11:24 AM' timestamp='1299345843' post='1202738']
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
[/quote]
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
[quote name='3DVision' date='05 March 2011 - 11:24 AM' timestamp='1299345843' post='1202738']
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
[quote name='andrewf@nvidia' date='07 March 2011 - 01:31 PM' timestamp='1299526311' post='1203778']
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
[/quote]
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
[quote name='andrewf@nvidia' date='07 March 2011 - 01:31 PM' timestamp='1299526311' post='1203778']
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
[quote name='3DVision' date='08 March 2011 - 10:44 PM' timestamp='1299645898' post='1204602']
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
[/quote]
[quote name='3DVision' date='08 March 2011 - 10:44 PM' timestamp='1299645898' post='1204602']
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
[quote name='andrewf@nvidia' date='09 March 2011 - 10:13 AM' timestamp='1299687214' post='1204831']
Hi
Trust me, you can't turn it off :)
[/quote]
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
[quote name='andrewf@nvidia' date='09 March 2011 - 10:13 AM' timestamp='1299687214' post='1204831']
Hi
Trust me, you can't turn it off :)
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
[quote name='3DVision' date='10 March 2011 - 09:25 AM' timestamp='1299770754' post='1205362']
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
[/quote]
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
[quote name='3DVision' date='10 March 2011 - 09:25 AM' timestamp='1299770754' post='1205362']
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
[quote name='andrewf@nvidia' date='10 March 2011 - 10:59 AM' timestamp='1299776384' post='1205414']
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
[/quote]
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
[quote name='andrewf@nvidia' date='10 March 2011 - 10:59 AM' timestamp='1299776384' post='1205414']
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
[quote name='3DVision' date='10 March 2011 - 12:39 PM' timestamp='1299782380' post='1205466']
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
[/quote]
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
[quote name='3DVision' date='10 March 2011 - 12:39 PM' timestamp='1299782380' post='1205466']
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
[quote name='andrewf@nvidia' date='10 March 2011 - 01:09 PM' timestamp='1299784176' post='1205481']
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
[/quote]
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
[quote name='andrewf@nvidia' date='10 March 2011 - 01:09 PM' timestamp='1299784176' post='1205481']
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
[quote name='3DVision' date='10 March 2011 - 04:23 PM' timestamp='1299795798' post='1205564']
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
[/quote]
Hi
Your logic doesnt quite make sense because with VSync enabled, you only get 60fps. So when you said VSync is enabled you get 179fps, that will never happen.
[quote name='3DVision' date='10 March 2011 - 04:23 PM' timestamp='1299795798' post='1205564']
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
Hi
Your logic doesnt quite make sense because with VSync enabled, you only get 60fps. So when you said VSync is enabled you get 179fps, that will never happen.
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
[/quote]
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
Fixed it. VSYNC was causing the problem. For some reason VSYNC wouldn't turn off even when I changed it in the settings, but now it will turn off. Not sure what I changed to make it start working, but with VSYNC off I get 90% GPU utilization on both GPU's and 3d runs mostly in the 60fps range with graphic options to HIGH. Whew!
I still think 3d vision is causing too much of a performance hit, because with just 1 card I can play with VSYNC on, 3d vision off, at 60fps. It looks incredible with VSYNC. But framerate drops to about 15-20fps by turning on 3d vision, hence the need to disable vsync.
Also, Metro 2033 runs pretty well in SLI w/3d vision, using dx10 high settings, getting around 60fps. With 1 card it drops to 30fps.
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
[/quote]
afaik you can't disable vsync as 3d vision won't function without it. Its possible its getting forced somewhere by the game and being processed double
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
afaik you can't disable vsync as 3d vision won't function without it. Its possible its getting forced somewhere by the game and being processed double
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
[/quote]
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
Hi
Currently 3D Vision requires VSync to be enabled to work properly.
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
[/quote]
Hi
Trust me, you can't turn it off :)
Well, believe or not, I had it working with VSYNC off and the performance was much better, and the 3d effect was just fine. I just had the normal screen tearing you get with VSYNC off. But today, it's back on and I can't turn it off. I'm going to tinker some more and see if I can do it again, and I'll post back if I get it figured out.
Hi
Trust me, you can't turn it off :)
Hi
Trust me, you can't turn it off :)
[/quote]
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
Hi
Trust me, you can't turn it off :)
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
[/quote]
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
Can anyone please confirm this behavior that I see, where if you have "enable stereoscopic 3d" un-checked in control panel, and you run a game or benchmark, you see a certain fps with VSYNC on (for an apples-to-apples comparison). Then when you check "enable stereoscopic 3d", but don't have it on via CTRL-T, that you see much worse performance. Then of course when you turn it on with CTRL-T, your performance goes down even more, but that hit is expected. What I don't understand is why performance gets crushed by simply enabling it in Nvidia Control Panel.
Here's an example:
Heaven benchmark DX11 or DX10, 1080p, default settings, VSYNC on. With stereoscopic un-checked, and GTX560 SLI 266.66, I get a solid 60fps, and my GPU's move between 60% and 95%. Now I enable stereospic 3d in control panel, close and restart Heaven, and I drop to 40fps, and my GPU's never get above 65%. I then turn on 3d with CTRL-T, and I'm down to 22-25fps, again with GPU's capping at around 65%. This appears to be the same behavior with BFBC2. Seems like a major problem with the 3d drivers, but I'd like to knnow if it's specific to the GTX560Ti cards or not.
Thanks!
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
[/quote]
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
This isnt a problem with 3D drivers, its how Vsync works.
Even in 2D mode if you have VSync enabled, the GPUs will not be fully utilized since since the GPUs may be ready to send the next frame, but they are waiting for the monitor to request the next frame.
With vertical sync off, the GPU is free to send frames whenever it wants to the monitor and the GPUs are typically utilized more, but this will result in frame tearing on the screen.
Hope this makes sense.
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
[/quote]
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
Andrew,
Yes, that does make sense for how VSYNC works. What I don't understand is how I can get 60fps with VSYNC on, but 3d vision off in control panel. When I switch to enable 3d vision (which would force VSYNC but it was on already), and don't turn on s3d via CTRL-T, my fps drops so badly. It implies I have to uncheck the box in control panel everytime I want to play a game w/out s3d or else take a huge performance hit. I used to have gtx260's and I don't remember selecting/unselecting s3d in control panel making any difference, other than I had to have it selected for s3d. I'd like to know if anyone else can do this simple comparison, VSYNC on, s3d disabled, versus s3d enabled but off. I can't imagine why these wouldn't be identical.
Thanks.
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
[/quote]
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
Hi
That functionaliy is correct, and let me explain why.
The control panel switch to turn off 3D Vision truly turns it off, the rendering of the frames isnt happening.
When you have that control panel checked on and then use the emitter's button or CTRL-T to toggle 3D on and off, you really arent turning it on or off, you are just hiding one eye. The rendering of two frames still happens at the driver level.
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
[/quote]
Hi
Your logic doesnt quite make sense because with VSync enabled, you only get 60fps. So when you said VSync is enabled you get 179fps, that will never happen.
Andrew,
OK, that explains how the driver is working, makese sense. So, why is my left+right eye (combined, mind you) performance 33% slower than without the driver enabled, and my GPU usage plummets? Can't see a CPU bottleneck, it's an i5-750 @ 3.6Ghz (max). There just can't be that much overhead. Let's do the math backwards. Let's say you want to play a game with 60fps in s3d, and I know my gtx260's SLI could do this. So your video card needs to be able to do a theoretical (60*2)/0.67 = 179fps VSYNC *enabled*. Let's conservatively say VSYNC is a 15% hit, so your card would need to play 179/.85 = 210fps with VSYNC off. Ummm, yeah. So either nobody is even using 3d vision, or there's a problem with the gtx560ti drivers. If I get 60fps disabled, I should get at least 55 enabled, then 55/2 turned on. Please look at your own internal benchmark testing and see what kind of overhead you see with the driver enabled or disabled, and let me know. I've even seen online testing where the 3d was only about a 54% hit (Far Cry 2 I believe), which is what I would expect. Not 1-0.67/0.5=67% hit.
Thanks again!
Hi
Your logic doesnt quite make sense because with VSync enabled, you only get 60fps. So when you said VSync is enabled you get 179fps, that will never happen.