Power Supply Amps Question

So I got an EVGA GTX 280 (Superclocked Edition), and it requires at least a 550W PSU. I had my eye on a 700W Thermaltake Toughpower PSU.

While doing some further research, I found out that my card needs at least a minimum output of 40 Amps from the +12V rails. In the feature section in the above link, it says that the PSU has a combined loading of 56A. But if you go to the specification section, you will see a table showing that at the +12V we have an Output Current Max of 18A.

Will this be enough for my VGA? And what should I look at? The combined or the single output?

If if your worried about the multiple 12v rails then this PSU is for you. http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011 -850hx.Here are some other choices that will power your pc just fine with extra juice to spare

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139009 -850tx

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139006 750tx

thermaltake toughpower psu are realy good will last u years

the corsair 750^^^ is a nice deal;)

Actually I got a very good price on that Thermaltake PSU. The thing is, each pin from the latter provides 18A. So when I plug the 6-and 8-pin connectors, wouldn't I be providing my VGA with only 36A? So we would be a bit short on the juice, no?samidiab

Actually I got a very good price on that Thermaltake PSU. The thing is, each pin from the latter provides 18A. So when I plug the 6-and 8-pin connectors, wouldn't I be providing my VGA with only 36A? So we would be a bit short on the juice, no?samidiab

Thanks for the much helpful input 04dcarraher, so do you recommend I buy the Thermaltake 700W PSU with my eyes closed? So there's plenty of juice it can provide...samidiab

So I got an EVGA GTX 280 (Superclocked Edition), and it requires at least a 550W PSU. I had my eye on a 700W Thermaltake Toughpower PSU.

While doing some further research, I found out that my card needs at least a minimum output of 40 Amps from the +12V rails. In the feature section in the above link, it says that the PSU has a combined loading of 56A. But if you go to the specification section, you will see a table showing that at the +12V we have an Output Current Max of 18A.

Will this be enough for my VGA? And what should I look at? The combined or the single output?

samidiab

I would recommend this modular Kingwin Mach 1 power supply, it has 4x 12V rails totalling 74Amps, 700W, total output is 750W, very reliable and never had an issue with it, and I've owned it for quite some time now. And it's only about $99.

[QUOTE="samidiab"]

So I got an EVGA GTX 280 (Superclocked Edition), and it requires at least a 550W PSU. I had my eye on a 700W Thermaltake Toughpower PSU.

While doing some further research, I found out that my card needs at least a minimum output of 40 Amps from the +12V rails. In the feature section in the above link, it says that the PSU has a combined loading of 56A. But if you go to the specification section, you will see a table showing that at the +12V we have an Output Current Max of 18A.

Will this be enough for my VGA? And what should I look at? The combined or the single output?

gamer082009

I would recommend this modular Kingwin Mach 1 power supply, it has 4x 12V rails totalling 74Amps, 700W, total output is 750W, very reliable and never had an issue with it, and I've owned it for quite some time now. And it's only about $99.