I could git 221 MHz 1M stable with the Rampage 2 Extreme, 220 MHz with the MSI Eclipse, 222 MHz with Biostar X58 and 200 with the EVGA X58. Remember, that all boards had some issues and with a new wave of BIOS updates, it could be very different. Why boards are not being tested carefully any longer by the manufacturers is a riddle to me. =/

Currenty trying to convince the Renaissance to post again, which it did exactly once with the 3rd CPU I tried =(