Going SLI. Need PSU advice.

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KennithOfRogers

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#1 KennithOfRogers
Member since 2004 • 48 Posts

Hey guys. I recently got a 8800gtx 768 evga on eBay for a great price, so I figure I will SLI my cards.

Here is my question. I need to know if my current power supply will be sufficient enough to handle these

cards without problem.

Its a thermalake toughpower W0104RU 65W ATX12V / EPS12V SLI Certified Crossfire Ready 80 Plus

Certified active power supply

Firefox will not let me post links to the item on newegg.... Anyway.

Could I get some help here?

Thanks.

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G4m3rF0rL1f3

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#3 G4m3rF0rL1f3
Member since 2008 • 25 Posts
does your power supply have the 2 PCIe power cables to connect to your cards? did you mean 650W the rule of thumb is 650 for 1 and 800 plus for sli to be safe id go 1000 watts in my case i had to upgrade from a 400watt to a 650 just for one PCIe card (an ati 2600 xt) i assume since your card is more powerful then mine you would need more power. let me put it this way when the card doesnt get enough juice it crashes myne did (several times) now this crash was isolated to the video card only so i never had to reboot but imagine your about to cap theflag and your card runs out of juicebedause your power supplly cant handle the load so to summarize i would recomend 1000 watts minimum for sli setup (2 cards)
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KennithOfRogers

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#4 KennithOfRogers
Member since 2004 • 48 Posts
yeah Ive got 2 PCIE power slots. Really a thousand watts? Anyone else have any imput ?
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KennithOfRogers

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#5 KennithOfRogers
Member since 2004 • 48 Posts
wow theres a typo I meant 650W I dont know why I only typed 65..
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beefdog

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#6 beefdog
Member since 2004 • 9185 Posts
Even tho it is a really good psu, it would cut it close....if your in the market for one id suggest the one i have antec tpq 850w...that would be more than enough.
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wklzip

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#7 wklzip
Member since 2005 • 13925 Posts

That PSU has plenty of power for 8800gtx in sli :)

And a good 1000w psu can power 3 gtx280 in tri sli.

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KennithOfRogers

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#8 KennithOfRogers
Member since 2004 • 48 Posts
So 650 would be enough?
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opamando

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#9 opamando
Member since 2007 • 1268 Posts

So 650 would be enough? KennithOfRogers

If it is a good quality PSU, yes. I don't trust most Thermaltake PSU's, but the Toughpower series is the exception, they are very good.

I agree with Wklzip, it will run those in SLI no problem.