"With all this hype surrounding the notebooks, I'm in need of a stronger desktop." OP
For what? Seriously, what do you need a stronger desktop for? There is nothing on the market from the "consumer" side of PCs that will come close to the performance you can squeeze from a MP.
I am using FCP, After Effects, Motion, playing games, Adobe Audition on the Windows side with Boot Camp....my MP runs circles around my quad core Intel in the same room, doesn't matter the application.
We need Snow Leopard, Adobe, and other manufacturers to take advantage of multi core procs, there is SO much headroom that is NOT used in a current Mac Pro. Ridiculous to need more power at this time.
J
Reencoding an avc ts stream an creating an avchd disk for PS3 (just an example) using something like x264 (megui, ripbot264) will load all cores to the max.
The latest x264 releases already include a bunch of penryn and smp optimizations. But you are right in the sense that, apart from hd editing, there is hardly any software out there that scales properly with cores/threads.