Corsair's the best RAM... yeah, that's before Crucial came out w/ the Ballistix series and bitch slapped all the other memory companies that don't even make their own RAM. Besides, why the hell do you need to waste money on OCer RAM like Corsair XMS Twin Pack when Macs only use the slower CAS3 RAM? The BIOS will probably just change the the Corsair 2-2-2-5 timing back to 3-4-4-8 anyway.