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MSI GTX 580 Lightining XE 3GB - How much AMPER(current) on 12V rail ???

post #1 of 4
Thread Starter 
Hey guys,
Does anyone know how much Amper (current) MSI GTX 580 Lightining XE 3GB needs on 12V rail ? Im looking at PSU's and most of them have multi rail design so i would like to know how much amps 1 card of this type needs on 12V rail. Any help would be much appreciated. Thanks in advance!
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post #2 of 4
650

If you base it off watts. Nvidia recommends what? 42amps total? for 12V...

Think lets just take the watts and do calcs. 456watts / 12V = 38amps total draw. 2 rails, that'd be about 19amps per rail. Not overclocked at all, stock reference 580.

As for the MSI lightening, no idea.
post #3 of 4
Holy fail...

READ SON! Wow, my bad. That was TOTAL system power.

I see 280watts total on the card.

So lets just say for safety its 300watts which might be attainable with overclock.

300 watts / 12V = 25amps total = 12.5amps per rail. Much better! My bad!
post #4 of 4
Thread Starter 
Ok so You re saying the 1 card drains 25 amps ? Pretty much how Unoriginal Sin told me . Ty guys . I ask because i own Enermax 1000W REvolution 87+ and i first hooked hard wired cables to the 1st graphics and then i hooked pcie modular to random slot and it turned out form the manual that both was takeing their power from 12V4 rail... So i did a fail there . I ran benchmark and it turned off te power so i was afraid i ****ed up the PSU but then i remembered that there were such things on multi rail PSU's liek this and i changed the slot to oter rail so that both cards are on diffrent rails and now it did OCCT PSU 1.5 h test without problem. i asked bcos that psu has 30A on each rail and 83 amps total. Thank You both for answers . Cant thank Unoriginal Sin cos i have 2 private message limit per day -_-
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