SU works fine with 7xx cards.
Try to close all trays (open only needed and then close);
Disable:
profiles, shadows, 'show hidden'. max. texture,
Use layer off to hide geometry you don't need now. Transparency quality- low.
I have no experience with using the GPU for rendering. How does this work? Do I need a special VRay (RT) or is it something the 'normal' VRay version can do as well?
Basically I'm planning to use the CPU (hence the i7-4960K)and not GPU.