Hey
For sell good cpu, but not golden, decent one.
6 GHz Vantage/11/FSE, exactly 6020-6030 MHz is maximum from what I remember on Rampage IV Black Edition. Stable on Rampage IV boards and Xpower II.
Price 600 euro + shipping (New in shops cost ~ 540 Euro, and many cpus are crap like 5.5/5.6 GHz, extra 60 euro for me is reasonable for good cpu)
Screen from Xpower II