Sufficient power supply for 980

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turncoat

Distinguished
Oct 30, 2011
14
0
18,510
Hey guys

Planning on picking up a new gtx 980 in the next week or two here, I was just looking to verify that my psu can still hold up for me.

Using a CM 700w currently (http://www.newegg.com/Product/Product.aspx?Item=N82E16817171032). I've had it for over 5 years, never had an issue, but it is getting older. Voltage readings in SIW are still stable under load, so I have no reason to think it's on death's door.

I'm thinking that I can handle a single 980 pretty safely, especially with maxwell's power efficiency (I think the 980 is even rated lower than my current 560ti). I had been thinking about an SLI setup somewhere down the line though, but I'm more skeptical about my chances here.

My psu was rated to handle sli for the 560ti, although I never tried it. Any thoughts on whether it'll hold up, or should I eventually upgrade to something more like 800-900W for an SLI setup?

Thanks

 
Solution
V
Reviews for this supply are good.
Combined +12V rail rating is 624W.
If you have say a 125W CPU, allow 40W for other components and want to run under 80% load, that leaves you 334W for graphics.
In the 700 series cards, this would allow you to run a GTX 780 Ti but in SLI you wouldn't have the power for two GTX 760 cards.
The new GTX 980 will run without any trouble. From the published specs you could handle two of them but this would be cutting it really fine.
I'd say stick with your current supply if buying a single graphics card.
If you decide to add a second card later, buy a new power supply.
The EVGA Supernova G2 750W would power two of these cards very nicely.
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VincentP

Splendid
Oct 18, 2013
4,105
1
26,965
Reviews for this supply are good.
Combined +12V rail rating is 624W.
If you have say a 125W CPU, allow 40W for other components and want to run under 80% load, that leaves you 334W for graphics.
In the 700 series cards, this would allow you to run a GTX 780 Ti but in SLI you wouldn't have the power for two GTX 760 cards.
The new GTX 980 will run without any trouble. From the published specs you could handle two of them but this would be cutting it really fine.
I'd say stick with your current supply if buying a single graphics card.
If you decide to add a second card later, buy a new power supply.
The EVGA Supernova G2 750W would power two of these cards very nicely.
 
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