Check out how Intel “Vanderpool” Virtualization Technology (VT) is used in Parallels’ Workstation virtual machine.
Windows XP running in the VM reports that it has a single “T2300” processor at 1.66GHz (this is on a Core Duo Mac mini).
Basically, VT allows Windows to use one of the CPUs and Mac OSX to use the other.
The result? A very usable Windows instance inside the VM. Faster than Virtual PC or Q. The fastest VM I’ve ever used.
Very promising for Mac users who need to keep one foot in Windows land…