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| Two card setups are becoming more common. There is a slight performance gain, apparently, from unburdening the CUDA card from also doing display. Power consumption (and the physical number of power connectors inside a MacPro) are an issue, as is heat. The ATI 5870 HD swamps the two connectors available in a MacPro; that's another reason to favor NVIDIA cards for Mac which tend to have one power connector each.
On May 3, 2012, at 10:21 AM, Karl Newman wrote: On May 3, 2012, at 8:36 AM, Dave Bittner wrote: Interested to know what you all think. I wonder if it is possible to run both the AMD card and the GTX 470 at the same time using the AMD for screen draws and Open GL and keeping the NVidia for the CUDA cores acceleration of Premier Pro and others? Could the power supply of the MacPro 3.1 handle the load or would it need an external power supply for one of the GPUs?
Karl Newman Karl Newman Productions
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