i have 2 ,12 volt rails do the amps combine or can i combine them?

i have 2 ,12 volt rails do the amps combine or can i combine them? Well i dont have it yet, its on its way from newegg.

http://www.newegg.com/Product/Prod [...] 6817159062

that is what i just bought, i need 27 amps for my Geforce 7950 GX2 and ive only been giving it 18 amps, which actually is doing ok for it. last PSU was 380 watts and something i just thought about was, does overclocking a cpu and gpu take alot more power? like 100's of watts of power?

Any way does the amps combine or can i make it combine somehow? And how do i tell which molex connector has what amps on it?

[quotemsg=1833924,2,90365]Your total amps is the two rails added togather[.quotemsg]


No this is incorrect, it is the total wattage provided to the rails divided by the voltage.

Eg: A 500w PSU provides 400w to 2 18amp v12 rails, so its

power = voltage x current

current = power / voltage

400w/12v=33A

So it is not the same as just adding the rails amperage rating together.

Um, that COOLMAX is weaksauce. It doesn't even have any PEG connectors, but you seem to be aware of this fact...

And yes, overclocking can really ramp up your power consumption. No offense but you have made a very poor choice.

On the plus side if you're an American the 4th is coming up. Hook that sucker up and overclock it like there's no tomorrow. You'll save money on fireworks

Hmmm, Coolmax...tier-5, "Do not buy." According to the label, the combined wattage on the two rails should not exceed 380W; a little less than 32A. Since it is tier-5, take 60% of that; back down to ~19A. Load it any higher, and homerdog's observation about money saved on fireworks applies, but then you'll need to spend more on the parts the PSU takes with it.

On the spec sticker in the newegg photos,, your unit shows a max of 380w to the 12v rails. That is 380/12 = 31.6 amps, not exactly additive.
In addition, low quality psu's will only deliver their maximum wattage at room temperature, about 25c. In the case, that is not realistic when installed in a case. Return it if you can for a better unit. A cheap psu is not the place to save money. Most multirail psu's are really only one rail, just limited to how much current can be delivered to the rail divisions.