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2x Geforce GTX 470's in Sli - Power Supply question...

Tags:
  • Graphics Cards
  • Gtx
  • Power Supplies
  • SLI
  • Geforce
  • Graphics
  • Product
Last response: in Graphics & Displays
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May 20, 2010 7:32:58 PM

I'm in the processes of building a new system and have opted for the Geforce GTX 470 with a motherboard that will support Sli. Eventually I might throw in a 2nd GTX 470.

My question is... Will my chosen power supply support 2x GTX 470's in SLI?

Checkout my POWER SUPPLY here.

Checkout BUILD here.

I think it'll be close. If not, I might return it and opt for something with a bit more kick.

Any opinions.

More about : geforce gtx 470 sli power supply question

a b U Graphics card
May 20, 2010 8:31:43 PM

I would go with a 850W power supply, since you have an i7 processor, and you say you may overclock both processor and gpu's.

I like to play it safe.
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a b U Graphics card
May 20, 2010 8:38:57 PM

Kiban has a good point about playing it safe, however 850 is a bit much. You'd be perfectly fine with the 750 as 2 GTX 470's in SLi in a similar test build (guru3d.com) only stressed out 550-575 watts. 750 is plenty of overhead room for overclocking.

Reference: http://guru3d.com/article/geforce-gtx-470-2-3-way-sli-r...

Hope this helps!
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May 20, 2010 8:42:19 PM

What if I didn't overclock anything. Do you think 750W would suffice?
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a c 130 U Graphics card
a b ) Power supply
May 20, 2010 8:45:44 PM

That PSU should be just fine. 4 Rails at 25A each will do you good.
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a b U Graphics card
May 20, 2010 8:46:18 PM

It is sufficient, what happens here is just up to you, like I said, I like to play it safe, and as borisof "said" I may overdo by playing it safe( coz that's the way I feel safe ¬¬).

But yes, 750 it is sufficient in theory, but is always best to give the PSU 20% of margin.
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May 20, 2010 8:59:05 PM

Thanks for the information guys.

If I decide to overclock I'll go with an 850-1000W, if not I'll stick with the 750W.
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May 20, 2010 9:01:06 PM

Best answer selected by Gnom3.
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