Your biggest problem will be voltage. The new C2s use 1.5/1.7, your MB may not have those selections, the slotket, may override those. Now, the multiplier is managed by the chip, not the MB. You SHOULD be able to plug in a c2-600 and run it at 75MHz (675), IF the voltage is not a problem. Don't bother with evergreen, I'd buy a new case/mb/processor before plunking down that cash.