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GTX280/GTX260 Power Draw?

Last response: in Graphics & Displays
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June 18, 2008 8:03:41 PM

OK among the reviews on the GTX280/GTX260 which are out right now, I found one GIGANTIC discontinuity. It has to do with GTX280 power draw.

In the H Enthusiast review (http://enthusiast.hardocp.com/article.html?art=MTUxOCwxMCwsaGVudGh1c2lhc3Q=):
Quote:
Should you be thinking about SLI configuring a couple of 280s, I would suggest at least a 700w PSU if you are an overclocker. You could possibly slide by with a very strong 600w PSU, but you would likely be pushing it too hard and would likely be better off with an 800w unit in the long run.


OK so I'm thinking a nice 750W PSU will be totally fine if you are SLIing 2x GTX260s. Fine.

Then I read the Anandtech review (http://www.anandtech.com/video/showdoc.aspx?i=3334&p=19):
Quote:
Now remember that a single GTX 280 uses more power than a GeForce 9800 GX2, and thus two of them is going to use a lot of power. It was so much power in fact that our OCZ EliteXStream 1000W power supply wasn't enough. While the SLI system would boot and get into Windows, we couldn't actually complete any benchmarks. All of the power supplies on the GTX 280 SLI certified list are at least 1200W units. ... A 3-way SLI setup using GTX 280s may end up requiring a power supply that can draw more power than most household circuits can provide.


What the hell? These are two drastically conflicting reports the GTX280/GTX260s power draw!

What's up? Can anyone demystify?
June 18, 2008 8:27:37 PM

I really don't know! I have a 750wat psu and I'm getting a single GTX 280. But one things for sure, I wouldn't go for anything lower than a 650wat psu for even a single GTX 280. I trust Anandtech a lot more than Hardocp.
June 18, 2008 9:34:22 PM

gamecrazychris said:
I really don't know! I have a 750wat psu and I'm getting a single GTX 280. But one things for sure, I wouldn't go for anything lower than a 650wat psu for even a single GTX 280. I trust Anandtech a lot more than Hardocp.

Agreed
Trust Anandtech
If you want to SLI two existing cards you need monimum 750W PSU
So it is logical that 2 GTX280 need more than 1000W
!