[KMcK]

The new Mac Pro is only a single CPU. Looks like it's going to have some pretty crazy speed as far as data I/O, but any PC that comes with dual Xeon CPU's will probably trounce the new Mac Pro as far as raw processing power goes. You'll also be able to have more memory on a dual-CPU unit (8 slots instead of 4) so more maximum RAM.

In my work I don't have any issues with data not coming off the disks fast enough, but I almost always run out of CPU power. Therefore I'll be exploring ProTools PC's or Hackintosh options, but I'll be waiting for the Mac Pro to launch and keeping my eye on benchmarks before making any moves for sure.