actually I was looking more into 780. from some reviews is doesn’t fall too much behind performance wise but price wise pretty much.
but still would love to see v-sync off results as any card now can push that to steady 60fps.
for example here are some results I did when I replaced gt580 with 7970:
GTX580:
cinebench OpenGL: 60
Softiamge, cube subd 831x800x800 shaded view rotation: ~17fps, after totating it for like 30sec or something it speeds up to 80fps. doesn’t work all the time.
Maya 1 riged cahracter simple scene: rotating cam 35fps-40fps, playing 4-5fps
HD7970:
cinebench OpenGL: 90
Softiamge, cube subd 831x800x800 shaded view rotation: ~90fps, no need for half of min rotation, goes smooth from start.
Maya 1 rigged character simple scene: rotating cam 70fps-115fps, playing 24-26fps
Same system just card replaced. Witht that much performance gain in viewport and CUDA rendering not so high in proprity list back then that was simple solution.
Now with redshift testing and looking so sweet, time to look at some CUDA cards again. Maybe
They also mentioned working on OpenCL version to but not any time soon 

