Best Value: http://www.newegg.com/Product/Product.aspx?Item=N82E16834257047
Best Mid end: http://www.newegg.com/Product/Product.aspx?Item=N82E16834231001
If you don't have a problem buying refurbished, then these are the best deals.
YES, it does work at least for me. please notice that it will shut down your temperature sensor on the cpu so do low overclocks for a gaming computer use 4 cores at 3.7-3.9Ghz fixing to change my clocks now back to stock because ive been sk8ing and not gaming as much. Good luck!( $130 for a x6...