Open cuda_supported_cards.txt in C:\Program Files\Adobe\Adobe Premiere Pro CS6 and add the line:
GeForce GTX 660 Ti
and save the file. Now restart PR. Repeat the same for the file raytracer_supported_cards.txt in C:\Program Files\Adobe\Adobe After Effects CS6\Support Files
That also enables hardware support in AE.
Thanks Harm for your kind support!
What it actually happened I typed GEForce GTX 660 Ti instead of GeForce GTX 660 Ti. I learned after watching a video in YouTube that space and case sensetive letters are important! I coud only add the new card in the "cuda_supported_cards.txt" in the Premiere CS5 folder. I could not find the "raytracer_supported_cards.txt" in AE, so I am assuming this would be for CS6 only.
I can notice improvement in Premiere when playing back from time line (specially when playing back scaled HD files in a SD sequence). I have not tried yet outputting H264 files.
One thing is that I don't notice very minimum improvement when outputing video in AE. AmI missing something?
The raytracer_supported _cards.txt file is only in After Effects CS6.