Overclocking 26xx Series Xeons?

Hello! I've got some overclocking questions.

Basically i want to know if what i mentioned is possible. I know that 16xx series are no problem overclockable since i have one running @ 4.5right now.

What I'm thinking is get a high-core count ( 8 ) but low frequency ( 2.4ghz) xeon from a clearance sale locally and then force it to a frequency that is tolerable as a workstation CPU.