I have a Mac Pro with 2 GTX 690's. Both have 4 Gigs of memory. To be more precise each card has 2 processors so each processor only uses 2 GB. When I open AE I get a "not enough VRAM" error so I can't run ray-tracing. 2 GB should be plenty of VRAM, so I don't get why it would say that. When I go to GPU information in the Previews preference window, I have enable unsupported GPU checked, but "GPU" is still greyed out. In the OpenGL section, it reads that I have 2 GB of vram. What gives? How come After Effects isn't seeing the VRAM for CUDA? Very very frustrating. The cards work fine in Premiere and EVERY OTHER APPLICATION that works using CUDA. After Effects is the only one that freaks out. Need a fix for this.
If you're on the cloud, forget about the Cuda for AE. It's been superceded by C4D Lite, which is faster than AE's old ray-tracing.using that card.
Your cards are fine for other things, just not AE.
Hum, that seems weird. I mean, I CUDA is sooooo very much faster than regular CPU rendering that C4D does. The ideal situation would be to have the Cineware plugin actually be able to use any of renderers in C4D, not just the standard. Then I could select my Octane renderer and have screaming fast 3D live in AE.