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Geforce gtx 680 4Gb?

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Hi guys,

Does anyone know if OS X can take advantage of the full 4gb of VRAM in a card such as this? I've read very mixed messages about this problem in the past few days, so any help would be greatly appreciated.

thanks
 
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bump..........
 
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Going Bald

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Unless, like many OSX users, you're using your card for compute (i.e. video editing), in which case the programs will only use GPU acceleration if the workload can fit in vram.

OS X will only see 2 Gb of the 4, so unless you are dual booting with Win7/8 the extra 2Gb of RAM is wasted.
 
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This is incorrect.

Not OOB it is not. You may have 4Gb show up in system profiler, but you are not actually using the extra 2 Gb with OpenCL unless you do a few hex edits.

If you have better information on a card that works OOB without, please give a model number and show a pic of an app actually using it. I would be interested in it for a new build I am planning.
 
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Not OOB it is not. You may have 4Gb show up in system profiler, but you are not actually using the extra 2 Gb with OpenCL unless you do a few hex edits.

If you have better information on a card that works OOB without, please give a model number and show a pic of an app actually using it. I would be interested in it for a new build I am planning.

No idea if any work out of the box. My guess would be the new K5000 for mac (which may allow others once OSX kernel is updated).

But getting >2GB vram cards to work in OSX is not difficult, with multiple posts on this site showing exactly how to do it (most don't require any hex editing, can just use the patch in Multibeast).

EDIT: and the adjustment is just required to utilize native OSX OpenGL program calls. Apps that call vram directly, or that don't use OpenGL (i.e. some CUDA apps or direct CUDA coding, don't require any adjustments)
 
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