Two GTX 680's for Mac in MacPro 5,1?

I'm setting up a Mac Pro 5,1 for Octane Render (CUDA hungry).
I'm looking at two "GTX 680's for Mac" and know the second will require some external power.
Any suggestions on product to power second card?
Thanks!

Most buy a 450W PSU to go outside or in the optical drive bay, either will do the job but the cables are messy.
Newegg and Amazon carry one that are designed for optical drive bay.
External PSU
http://forums.macrumors.com/showthread.php?t=1460429

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Hello all, I have a question.
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use the nVidia Hack http://forums.adobe.com/thread/629557 - which is a simple entry in a "supported cards" file
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LostRealist wrote:
I have certain internet pages that refuse to display correctly in Safari or Firefox. Is it possible to download Internet Explorer to my MacBook?
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GTX 680 Mac for GPU processing only?

Have Radeon card in Mac Pro 5,1 driving 27" display. Want to use a GTX 680 for its GPU processing capability and continue using the Radeon for CPU display. Can I use 680 for GPU only? (No output connection used.)

We just bought a GTX 680 to test on one of our editing suites, as a cheaper and still viable ugrade vs. buying all new MAC Pro's all around.
So far, the installation of the card and setup has been easier than anything I've ever done on the PC end.
MAC have the most beutifull insides of a computer I can ever imagine. Soooo pretty... *geek drool*
But back on track!
We've used the "hack" earlier to get some if the iMACs we have as well to support CUDA in Premiere and AfterEffects, however when applying this same "hack" to the GTX680 on a MAC Pro, I dont get CUDA listed as a rendering option in either PR or AE.
Works fine on our iMACs, but I just cant get this one to work.
(And by "hack" I mean adding the graphics card to the list of supported cards in the CUDA supported GPU list.
More can be found here for those who needs it: http://www.vidmuze.com/how-to-enable-gpu-cuda-in-adobe-cs6-for-mac/ )
Any clues anyone?

Will After Effects CS6 support the new EVGA GeForce GTX 680 for Mac?

With this new graphics card out will Adobe/Mac OS X add support for it in AE CS6 for excellerated graphics and ray traced 3D? Also, will Adobe bring back live 3D from Photoshop to AE?

Sorry, should have been more specific. I was referring to this desktop card the Gforce GTX 680 (mac edition) http://www.evga.com/articles/00730/. I just saw a recent article about its release but not sure how long it has been out and not sure what evga is. I'm in the learning phase of all the ins and outs of graphics card compatibility and the manufactures intent. I'm curious about inserting it into my Mac Pro 2010 and getting improved performance along with accelerating my processing in After Effects CS6 since it has an ATI card with no CUDA architecture. Want to beef my RAM too. So I'm wondering if this card is A. Compatible with my machine/OS and B. If Adobe will add it to its list of supported CUDA cards. Again, not sure if this is an Adobe thing or an OS thing, I heard on some tutorial video that Mac OS is part of the issue. I am aware of the current state of limbo Mac Pro users are in with Apple's hiatus from a major update to this line. But even with a major new release my employer won't be in the market for that kind of investment which sucks because I'd like to move to thunderbolt for my video storage. Personally, I'm investing in a MBP with the 650M card which I've done tests with and it beats my Mac Pro with having CUDA. As for 3D layers from Photoshop to AE it is just kind of makes sense as well as being a price point issue. If you can draw and create 3D objects in PS why not be able to animate them in AE? Just like being able to animate AI and PS layers, it should be one big happy Adobe family, no? Why pay for Cinema 4D if I don't need it for everyday advanced 3D work? I do however love the Element plug-in from Video Co-pilot and it works great so that is my solution for now, then 4D if I get into more advanced custom 3D. But still you should be able to make 3D objects in PS and bring them in to AE, it just makes sense.
Thank you for your time!
Mac Pro mid 2010
2x2.66 6-core Intel Xeon
16GB RAM
ATI Radeon HD 5870 1gig
OSX 10.8.3

Two GTX 680's for Mac in MacPro 5,1?

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