From what I've read, AMD dropped the ball with these chips. The came our WAY later than Intel's quad core, cost more, and do not perform as well (especially when it comes to overclocking).
I wouldn't get one. If I were you, I would wait to get my hands on the q9450. Can you say 12MB cache goodness

and with 260MHz clock and 267MHz FSB extra for around $120 more, you can't go wrong.