Apple today has updated its Mac Pro line with a third option for processors. You can now get a Quad-Core 3.33GHz Xeon processor as an option for your Mac Pro. Also available today is the option to pick a 2TB drive for your storage needs as well. What does all this speed and storage cost? Expect to spend about $1200 for the upgrade in processor and $350 more for the storage bump.
A bit pricey, but if you need the speed and storage it may be worth your time although it would be much cheaper to just buy the drive yourself.