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750W enough for MSI GTX 580 Lightning?

post #1 of 12
Thread Starter 
I just pulled the trigger on a second hand 580 Lightning to replace my ageing, hot and loud, GTX 470. The problem being, I never thought about PSU requirements. MSI's page doesn't list minimum specs, and I know it pulls more than a reference 580. I also tried PSUCalc, but it didn't have an option for the card.

Will the 750W Antec Truepower I have be enough to power my i7 920 overclock plus a 580 Lightning? It's got the connectors, sure, but is it enough power?

Will I be able to overclock the card, even if it will run?

Thanks.
post #2 of 12
More than enough!
post #3 of 12
Definitely more than enough for your build with that card. Antec makes reliable supplies- if it were a no-name 750, then you might have to worry rolleyes.gif
    
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post #4 of 12
Plenty of power. I ran 2 with ease on my hx750.

Join me in Folding for #37726 1
post #5 of 12
Thread Starter 
Cheers guys. Appreciate your efforts in responding.

So I can overclock the card without worry? Push it as hard as I can?
post #6 of 12
you should be right as rain tongue.gif
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post #7 of 12
Easily more than enough. ^^

A GTX580 needs around ~25A IIRC so it's plenty! smile.gif
post #8 of 12
Can't see why not. Overclock away mate.
post #9 of 12
Go for it. It's definitely a tough PSU, should support that overclock like a breeze.

It's never a good idea to cheap out on a power supply, yeah, but in the case of a single GPU setup (discounting the 590)- 750w is usually PLENTY.
    
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post #10 of 12
Dude, I'm running this crappy Xigmatek 600w PSU and it can semi-handle my GTX580. The PSU is crap and the lights flicker in my case when under heavy load with the card overclocked to 1.150v but other than that, it works....I'm upgrading to a 750w PSU in light of concern for my system blowing up in my face...Lower watt PSU's can handle a hefty GFX card but I think we get into problems with these PSU's when they have a high ripple in the line when under >80% load for a big card. Technically a 550w PSU could handle a 580 but I think only really high end PSU's could do that.
700

It looks like the lightening should only be around 310W which would mean on 2 rails, that's around only 13amps which is probably wrong...but yea. Total is only ~26Amps @ 12v

I just ordered a 750w PSU lastnight so it better work. I hope this thing is future proof for my system. I only expect GFX cards to reduce in watts and same with CPU's so I can't imagine I'd ever need anything more in the future....
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