Brand new iMac 27" GPU not showing up as compute device

My work just recently bought a brand new iMac 27" (late 2012) with the NVIDIA GeForce GTX 680MX graphics card. I installed the latest 64 bit 2.65a off of blender.org and there is no GPU listed under “compute devices” …only CPU. Every other machine I’ve used, the graphics card would already be listed there. What am I doing wrong?

Nevermind, I downloaded the latest CUDA drivers from NVIDIA’s website and all is right in the world. Thought CUDA was automatically enabled.

Hello, Im with the same problem that you had. My Imac just came in and I have installed the latest CUDA driver (5.0.37) and blender 2.64a and the cuda option is not even listened in the preferences of blender. How did you get it?

Try the current blender version, 2.65a