And you'd be... I'm sorry, I missed your nick - perhaps because I didn't have the chance to ever notice it...?
Everyone starts posting and one time or another, don't be an ass just because they aren't a lifer. I could make the exact same comment about you, mister 1k posts.
You guys really don't get it: you can accelerate other things on the GPU as well and this is the general direction things are moving in the NLE market. Typically they slow at first but then suddenly everyone picks up the feature - think of it as a bullet point for the next version...
I think you're the one not "getting it" I've never stated that GPGPU programming won't be big or influential, it has the potential to be. What I'm stating is that isn't today and won't be for a while. GPU's are able to do a lot of work on independent data, whenever there is branching or dependency, however, GPU's start to choke. Thats part of the reason most video card encoders suck compared to their CPU counter parts. They would become slower if they did the stuff CPU encoders do because good encoding has some pretty dependent data.
Specifically referring to CS5, and what it can do with the GPGPU. There are effects that the video card can do, that isn't all of them, but some of them.
The GPU is never going to take out the CPU for general processing, It can't, it would have to gain all the baggage that CPUs have had to deal with for years, and once it takes on that baggage what do you gain? Not much really.
Yes, I know you are currently on a 3 week vacation, but I thought I might as well respond.
OP, the cheapest current/last gen video card is what you want. There isn't a good reason now, nor will there be for several years (as pertains to video editing) to get a faster video card.