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Results of tests with two nividia cards in same computer (Quadro 2000 + K5000)
Hi;
I was able to borrow the K5000 for the eventing. My T7500 has three available GPU power cables, 2 six-pin and one 8-pin, and with the 1100 watt supply it has plenty of oomph for both cards.
But, after struggling for 3 hours I’m back to just my trusty Quadro 2000.
I could get the computer to run with both cards installed, that was not the issue. BTW I was using the latest Quadro driver, installed tonight. That driver is the one that works with all versions of Quadro. But there was a lot of oddness!
First, no matter how I arranged the cards in the slots (I have two that are intended for video cards), if my monitors were connected to the K4000, there would be no image until Windows loaded – in other words, could not see the boot sequence, BIOS info, etc. I ran through all the following tests with the monitors connected at first to the Q2000 and then to the K5000 (during which I would put up with the scary lack of any display until Windows came up)
SVP12 would detect both, and I could switch between them after the requisite Vegas restarts. But, no matter what I tried, when the Quadro 2000 was selected, the preview would freak out – jailbars, crazy colors, random dots, you name it, totally messed up. Renders would work; it was just something about the preview that was unhappy.
With the K5000 selected, preview was fine, and the performance was way better than the Q2000 – at Best Full, on the red car benchmark it would rarely dip below 20 fps. Best Auto was a solid 29.97 for 100% of the sections; the only way to get that on my Q2000 is to use Preview Auto.
With the K5000, Sony AVC render times were better than before I installed both cards, but not thrilling. The fastest I got in about 5 tests was 2:46. (compare that to 3:31 when running a single Q2000).
As predicted, MainConcept could not use the Kepler chip at all. GPU use stayed close to zero, for both CUDA and OpenCL. Render times were actually worse than if I chose CPU only – so long I never bothered to let the test complete.
Here’s a very odd thing. Even after selecting the Q2000 and restarting Vegas, it would not use the GPU at all, not in Sony AVC or in MainConcept AVC. The system would report “CUDA Available”, but could not use it. (Vegas would always report CUDA available regardless of the card selected).
I’m speculating that Vegas was confused and would always try to use the Kepler GPU regardless of the selection.
So, for all the hassle, no MainConcept acceleration, and only a ~ 22% improvement in render time for Sony AVC, even the great preview performance was just not worth it.
Just thought that inquiring minds would want to know …
Steve
Win7 Pro X64 on Dell T7500, MultiTB SATA, 12GB RAM, nVidia Quadro 2000, Vegas 12, 11, 10, 9 DVDA 6.0 & 5.2(build 135) Sony HDR-CX550V, Panasonic GH3 with LUMIX G X VARIO 12-35mm / F2.8 ASPH, LUMIX G X VARIO 35-100mm / F2.8
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2 Replies
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Thanks for reporting that. It would be quite odd to build a computer with two GPU’s and not have them be the same so I’m not surprised that Vegas was confused, especially since they had different architectures. The other interesting thing is that the K5000 cost the same as my whole 6-core 16GB commuter so there is no way that it is cost effective. You could build a 12 core computer for the same price and probably get much better performance.
~jr
http://www.johnrofrano.com
http://www.vasst.com -
Thanks for the info!
Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
https://www.facebook.com/FilmexCreativeMedia
1-876-461-9019
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