corsair doesnt perform well on these boards unless they have the BH-5 winbond chips normally. My experience anyway.
here's some RAM that has achieved 250FSB + on this and the Infinity board (same PCB, BIOS, voltages):
Buffalo BH-5
OCZ BH-5
Mushkin BH-5
Kingston BH-5
see the pattern here? I've not heard of more than a couple users say their BH-5 wouldn't perform up to 240 or higher. Most BH-5 users taht post in the DFI section at AMDMB.com are hitting 240-260 without any problems. So I can highly recommend BH-5 if you can find it!