GPGPU (General-purpose computing on graphics processing units)

GPGPU (General-purpose computing on graphics processing units)
There was some discussion half a year ago that the GPU (graphics processor unit)/video card wasn't really important for use with photo editing programs.
Adobe however and probably also others have put some efforts in using the GPU to do some calculations.

Here is a test to show you the effect a GPU can have on performance and also the amount off cores and Hyper-Threading Threads (HTT)
link

Sadly only few things are currently able to be handled by the GPU but in CS5 it's already more than it was in CS4 and also plug-ins seems to be using it more now.
If this continue it might be come a norm hopefully.