I'm trying to do a cheap upgrade on an old fairly cheap system, but despite everything I've read don't really understand dual +12V rails. I've got a dell dimension 4600 with a 2.8GHz pentium 4. I'm going to upgrade the ram to 2gb and was looking at buying an ati radeon hd3650 agp graphics card. A 550Watt or greater power supply with 30Amps on 12 volt with 2x4 power connector is recommanded. I'm hoping to get a psu < $60 and was looking at this, but wasn't sure whether or not 2 12 volt rails at 20A was ok instead of one at 30A.
Any help/suggestions would be greatly appreciated.
Any help/suggestions would be greatly appreciated.