[durdy]

Anyone have any opinions on which is better?

Nowadays it seems that the vast majority of PSU's are multi rail. The only few single rail PSU's I can find that are quality come from Corsair and PCP&C.

I ask because I am looking to buy a new PSU soon. I have a fairly old Thermaltake 560W PSU that I think is single rail with only 20-22A. I've had it since early '05 and it's low efficieny (only about 65%) I think.

I'm leaning towards getting the Corsair 450VX that has a 33a single rail. It'll be enough to power the budget rig I plan on building since I want to upgrade.

Just curious as to what others think between Single Vs Multi rail PSU's.