My understanding is that Premiere only uses one card max, if this is different let me know. So the extra horsepower is to run apps that access more than one GPU. Interested at this point however in stats for Davinci, Speedgrade, etc, if they benefit. Maybe NeatVideo. After Effects supposedly uses all cards
Reference After Effects CS6 does use the CUDA cores of all installed cards. Details here: http://blogs.adobe.com/toddkopriva/2012/05/gpu-cuda-opengl-features-in-after-effects-cs6.html
Premiere Pro will only use the CUDA cores on one GPU. Details here: http://blogs.adobe.com/premiereprotraining/2011/02/cuda-mercury-playback-engine-and-adobe-premiere-pro.html
@zcream Funny thing is GPUZ doesn't report my GTX460's memory controllers load as ever higher than 1%, and the GPU load is rarely above 10%. Wouldn't the memory controller be involved in transfer over the PCIe lane?
Personally, I went for GTX 670. We'll see how it'll behave, especially with upcoming DaVinci.
Also think that GTX 560 and it's variants are also not bad, quite cheap, especially if you get it on sale.
Of course, they are larger and consume more than GT 640, so may be it is better to just plug second GT 640 later if you need it.
@DrDave Yeah, it seems that in PPro the problem is either getting the software to utilise all the available cores (or some other bottleneck, perhaps memory bandwidth).
According to Studio1's benchmarks (http://www.studio1productions.com/Articles/PremiereCS5.htm) there's hardly any difference in timeline rendering speeds across the various cards, there's lot more variance in DVD encoding.
I took their listed results for CUDA rendering on CS5.5 and compared them to the GT-240. The figures below are seconds and a ratio compared to the GT-240.
Benchmark One: AMD X4 @ 3.2 GHz / 8GB Video Card Time Line Render Export to MPEG-2 DVD None 373.0 / 10.91 387 / 1.38 GT-240 34.2 / 1.00 281 / 1.00 GT-440 33.3 / 0.97 275 / 0.98 GTX-470 31.6 / 0.92 230 / 0.82 GTX-545 32.8 / 0.96 258 / 0.92 GTX-550 Ti 31.9 / 0.93 246 / 0.88 GTX-570 31.5 / 0.92 193 / 0.69 GTX-680 30.0 / 0.88 184 / 0.65 Quadro 2000 32.5 / 0.95 257 / 0.91 Quadro 4000 31.6 / 0.92 242 / 0.86 Benchmark One: i7-920 @ 3.05 GHz / 16GB Video Card Time Line Render Export to MPEG-2 DVD None 114.0 / 9.91 176 / 0.97 GT-240 11.5 / 1.00 181 / 1.00 GT-440 11.5 / 1.00 180 / 0.99 GTX-470 10.0 / 0.87 98 / 0.54 GTX-545 11.0 / 0.96 168 / 0.93 GTX-550 Ti 11.0 / 0.96 159 / 0.88 GTX-570 10.0 / 0.87 97 / 0.54 GTX-680 9.0 / 0.78 86 / 0.48 Quadro 2000 11.5 / 1.00 166 / 0.92 Quadro 4000 11.0 / 0.96 155 / 0.86 Benchmark Two: AMD X4 @ 3.2 GHz / 8GB Video Card Time Line Render GT-240 341 / 1.00 GT-440 337 / 0.99 GTX-470 334 / 0.98 GTX-545 337 / 0.99 GTX-550 Ti 335 / 0.98 GTX-570 329 / 0.96 GTX-680 316 / 0.93
Studio1 also had this to say about H.264: "The difference between a 96 cuda core video card and a 480 cuda core video card was 7 seconds when exporting in the MPE GPU mode."
So today, unless you're doing MPEG-2 encoding there doesn't seem to be a great reason to upgrade from the GT-240.
EDIT Fixed benchmark two's ratios.
This thing is mostly useless marketing shit. They want to sell Quadro :-) Just most people do not want to buy it.
It is topic about desktop graphic cards :-)
It seems than Speedgrade just needs OpenGL 2.0 graphic card, therefore it should work fine with AMD cards... any experience with it?
Another interesting comparisons between GTX 680 and AMD 7970:
OK. Almost the same as in first post.
Being able to run 3 monitors (2 dvis 1 Display Port) was also a plus.
Do you have a link to exact card you use, as most GT 640 seem to have 2xDCI, HDMI and VGA.
Swapped out a GTX460 2gb with a GT640 2gb and see an increase in rendering and real time playback in PP CS6 with CUDA hack. I can't believe what you can get for $100 in performance. And no need for power connectors! Being able to run 3 monitors (2 dvis 1 Display Port) was also a plus.
Radeon 7970 looks like an excellent contender.
Issue is that both CS6 and DaVinci do not support AMD cards :-)
So, if you need card today, NVidia is the only way.
In is very interesting conflicting data about SpeedGrade.
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