I've got a Semperon 2500+ (256kb L2, 7x multi, 1.4ghz, SSE3 and x86-64) I also have a DFI Nforce4-4x mobo with a custom NB cooler (stock one is pathetic), currently clocked to 2.2Ghz 1.45v (bios reads it as 1.39v but I don't trust it) 314HTT. I can't see to get multiplier adjustments in the Bios, but at 7x max who needs them? Going to try for 2.4Ghz once I get a better cooling solution than the all aluminum stock one, I am running AS5 on it so at least that helps.