I find all this debate and comments like "You don't need a Mac Pro" amusing.
People buy Mac Pro's for a number of reasons...
- Support for multiple displays
- Support for more mass storage or RAID
- Support for better graphics performance or multiple GPUs
- Support for some kind of PCIe card for your creative work
Sure, some buy because they need 12-cores and 24GB of RAM, but not everyone does. And to imply that you don't need a Mac Pro just because of these two items, is, well extremely ignorant.
It's ridiculous to look at computing needs based on the form factor. Analyze the software you run, look at the peripherals you need, and then decide what form factor best suits your needs.
With Thunderbolt, a lot of the needs that could previously only be achieved through the expansion capabilities of a Mac Pro, can now potentially be met with a computer of any form factor.
And when you couple Thunderbolt with very capable quad cores in MacBooks, iMacs, and Mac Pros, creative professionals and enthusiast users have more choices than ever before on how to get their work done.
Let me wrap up by reminding everyone that there are precious few apps that can stress a Quad Core these days, never mind a Hex, Octo or Dodeca core system. So, yeah, if your workload relies heavily on 6+ cores, then you probably really do need a Mac Pro. Otherwise, you have more choice now.