Overclocking a Xeon x5670 CPU to 4GHz

This is on my work computer with a Asus P6T Deluxe socket 1366 motherboard. It originally had a Core i7 920 CPU overclocked to 3.5Ghz. That is a 4 core CPU. The Xeon x5670 is a 6 Core CPU that at stock speed runs at 2.93Ghz. I overclock it to 4GHz.