Ugh! Horrible assistance above, and definitely wrong place to look for it (no one here does anything more than gaming anymore, those of us who did left long ago [I only came back to answer a question by a member I respect]).
GTX570 > GTX 670 AND GTX680, Kepler's GPGPU side is borked; so don't wait for support, for CS5's Cuda preference just get the GTX 570 and be happy. Especially is you work with the raytracer listed in the link above, the GTX5 series destroys all other nV contenders... especially the GTX6 and even GF100 Quadro cards.
And in CS6 and other more advanced versions of NLE software you can even consider the other side of the GPU aisle for more performance.
Check the Adobe forums, not here.