This is the card I'm trying to use, its a superclocked 660 from EVGA:
I upgraded it from an Nvidia Geforce GTX 460 1gb.
My current power supply is a BFG GS Series ATX12v v2.2 550W. It has dual 12v rails.
The 660 says it requires 450w or greater with 24 amps on the +12v rail.
I have 2 +12v rails: +12V1 (18A), +12V2 (18a)
Here's the graph on the side of the box. I'd link the PS online but I can't seem to find it.
[DC Output] [ +3.3v | +5v | +12v1 | +12v2 | -12v | +5vsb ]
[Min. Load] [ 0.5a | 0.3a | 1.0a | 1.0a | 0a | 0a ]
[Max. Load] [ 25A | 20A | 18A | 18A | 0.3A | 2.5A ]
[Max. Combined [ 130W ] [ 432W ] [ 16.1W ]
[Peek Output] [ 550W ]
So I'm reading some places that say 18A even on dual 12v rails isn't good enough. Another place I read said you add up the +12v rails for dual rails, and go by that number which is 36A. Which is right? Now the weird thing is, my 460 apparently requires 22A on the +12 rail. So if you don't add it up, and it's 18A, would my computer have eventually blown out from using that card? I've had it in there for a while, it does get hot when using some software. (Although I think this is because the case had blocked the vents in the back for the card. Just noticed that when swapping them today. Not sure though, so please tell me.)
I was able to power on my comp with the 660 in there, but didn't play any games or run any intensive software. I get very paranoid about these things, and don't want to spend money to fix a broken computer when I can save on just upgrading my PS if I have to. Please let me know, thanks in advanced.