Badaboom obviously does very well with a fast GPU, but the CPU requirements are also reasonably high. Keeping the GeForce GTX 280 fed actually ate up 50% of the CPU power of our Core 2 Quad Q9450 in our tests, it seems that Badaboom won’t scale beyond two cores.
The problem is that Elemental and NVIDIA make the argument that using the GPU to transcode video frees up your CPU to do other tasks while you’re doing this. The reality is that this is only true if you’ve got four cores, otherwise your dual-core CPU is just as pegged as it would be if you were doing a CPU-based video transcode. The difference here being that the transcode is going a lot faster.
While NVIDIA wants you to spend less money on the CPU and put the savings towards a faster GPU, the correct approach continues to be buying a decent CPU and a decent GPU, even with GPU accelerated video encoding. If you’re going to be doing a lot of video encoding, a quad-core CPU is still a good idea regardless of whether you’re doing your encoding on the GPU or not.