VirtualBox 3.2 includes lots of performance, power and platform improvements.
VirtualBox now supports the latest Intel hardware, including the new Intel Core i5 and i7 processor and the Intel Xeon processor 5600 Series support for Unrestricted Guest Execution.
Hot-plug CPUs, VirtualBox does that too. Now you can hot-plug CPUs for more computing power with zero-downtime for the guest.
VirtualBox has been downloaded 26 million times since October 2007, and according to Oracle, it's cranking 40,000 downloads a day.
You can download VirtualBox here.