300 --> 71 (640W, 220v)
i am running it stable at 300 without problems although it is a bit loudy
i am not sure about PSU, i haven't opened it, is it really 650W?
Hmm extra 50 watts for 300. I guess that will for sure overwhelm the Antec 650 watt PSU if one runs at 120v. I don't think I will try this until I slap on a 850 watt or 7500 watt Gold or Platinum rated PSU.
Don't confuse input wattage to output wattage. The PSU is rated at 650 watts output. When the input wattage is 640, the output more like 500-550 watts (depending on efficiency), so that's fine for a decent PSU.