After seeing that I’m way under powered in the GPU department (47 minutes for the render from the cycles benchmark thread) I’m considering upgrading the GPU in my Windows PC box, but not sure about the details.
The motherboard is EVGA 122-CK-NF68-A1 LGA 775 NVIDIA nForce 680i SLI ATX Intel
I’m not sure if the NVidia GFX 660/680 boards will work with it. I’m looking at about $200 for the upgrade.
Also, the PSU is 700W.