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Enough power for Gtx 1080 with my power supply?

post #1 of 4
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My PSU is in my signature. I am running i7 4790k overclocked to 4.7 ghz at 1.25 volts on the core. Corsair H105 for cpu. 5 hardrives (3 ssds. 2 hdds). 9 fans.

I had no issues with GTX 980, but EVGA FTW 1080 is running 341 watts according to this http://www.pcworld.com/article/3088145/components-graphics/evga-gtx-1080-ftw-review-the-most-powerful-graphics-card-in-the-world-made-better.html?page=8

Any idea if this will be enough with my 650 watts PSU? I STILL think Yes., but I can be wrong.
Cubic Rubik
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Cubic Rubik
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Optical DriveCoolingOSMonitor
Lightscribe DVD writter Corsair H105 Windows 10 Pro BenQ 2720Z 
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post #2 of 4

The 341W is not what the video card is pulling. That's what their PSU is pulling out of the wall outlet while their GTX 1080 is under full load. So, if we assume that their PSU was 90% efficient while pulling 341W out of the wall, then that would mean the entire computer was pulling 307W out of the PSU while they had the GTX 1080 under full load. The GTX 1080 itself isn't pulling any more than about 185-190W. Its power consumption is about the same or lower than the GTX 770. It's also just a tiny bit higher than the GTX 980, but not by much.

 

So yeah, a 650W PSU would be far more than enough; it would be extreme overkill. ;)


Edited by TwoCables - 7/20/16 at 2:01pm
It's a computer!
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It's a computer!
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post #3 of 4
NVidia's listed specs for its designed maximum power draw is 180W. That is what the default shipped model will pull max. Partners may adjust things on the cards that may increase this, which often is true - however, the increase is never that much
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post #4 of 4
A 650-watt PSU is more than enough for a GTX 1080. Hell, it's more than enough for TWO GTX 1080s.
Everest - Intel
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Everest - Intel
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