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  1. H

    12v amps needed for xfire 4890's?

    The xfx 650w can be had for about $60 after rebates, would the 650 (which has 52amps, 750 has 62amps) have enough to o/c my proposed system? I'd rather save the $40 if i don't need the extra amps. Afaik each 4890 draws 20-22 peak amps off the 12v. How much do I need left for o/c'ing an i5 750?
  2. H

    12v amps needed for xfire 4890's?

    So I'm plotting to build a midrange system with the following: i5 750 (want enough power to get a good o/c out of it) decent overclocking p55 mobo 4gb ram 2 ati 4890's in xfire 1-2 7200rpm sata drives ~4 120mm fans I'm under the impression that besides a good manufacturer, lots of amperage on...