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Dual GPU questions
– If I am using a GT120 to drive the GUI monitors, is anything connected externally to the nVidia FX4800 (or GT285)?
– Would CS5 and other apps still utilize the GPU benefits of an FX4800 in this scenario?
Thanks,
Andrew Huebscher
Los Angeles, CA -
6 Replies
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There’s no need to connect anything to the GTX285 or FX4800. It sits inside the Mac to handle all the GPU processing. If you need dual monitor setup you would connect both monitors to the GT120.
Good question on the CS5. It should recognise the FX4800 and takes advantage of it.
-chrispy
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Thanks. Would it be possible to use a GT8800 in lieu of the GT120?
Andrew Huebscher
Los Angeles, CA -
Eh…not sure.
We have not tested it and therefore won’t meet our minimum specs. And while we don’t do any specific cuda processing on the GUI board there is processing that is done on the GUI side that requires a “beefy” bit of card. So my guess is that while it might work, it might not work well.
Sincerely,
Joshua
Director of Support
Blackmagic Design Inc. -
For the MacPro, you will need a GT120, and also either a FX4800 or GTX285 for real time HD. While the main processing GPU is used for all the CUDA grading, we do use CUDA in the GT120 as well, and a bunch of other tricks too. The 8800 will not work.
The MacBookPro of course does not have these dual GPU’s so you may ask, how does that work? It does, but with limitations of processing speed so real time operation is limited to SD. Of course, these new MacBookPros also use Nvidia CUDA.
Peter -
Yes, Premiere automatically recognizes the CUDA card for the Mercury Playback Engine. However, to utilize the bigger GPU in After Effects, you need to have a monitor plugged in to it.
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Thanks, everyone, for your input.
The new Mac Pro’s are available for order today. They show only ATI card configurations. Are they still compatible with the GT120 and FX4800 cards?
Andrew Huebscher
Los Angeles, CA
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