The title says it all... Does CS4 support hardware acceleration using ATI Stream or NVIDI CUDA? I don't find anything about these in the specs.
The quick answer is NO!
With third party software there is a possibility of CUDA support. When CS5 comes early next year there definitley will be CUDA support for at least some cards.
Search the forum for CS5... This has been discussed before
I've just had this interesting discussion on the Intel forum. Just like to share the information from there here...