Is 550 Watt PSU enough for my pc?

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Swampfox87

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Mar 11, 2014
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My pc specs

MB: Gigabyte GA-990FXA-UD3
Processor: AMD Phenom II x6
Ram: 12Gb Kingstone
HD: 3tb
VCard: Nvidia Geforce GTX 760
PSU: Sentey 550W; single strong rail 32A

Will be enough to run my pc with 550W?
 
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Traciatim

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Nov 11, 2006
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Just as an FYI, one 12v rail at 34 amps can supply 384 watts.

I know on my 965BE with a 7850 pulls about 350 watts from the wall and is using an 80+ bronze power supply, so at 82% efficient it's actually supplying it with at least 285 watts. According to Anand's chart over at http://www.anandtech.com/bench/product/778?vs=854 the 760 will use upwards of 60 watts more than the 7850, and the 6 core CPU is probably using 20-30 watts more than mine . . . of course those are at the wall measurements. So if you add about 75 watts on top of my usage you would be looking at 285 + 75 at somewhere near 360.

I think that's coming dangerously close to the capacity of the supply, especially if you are going to be tweaking clocks at all.
 
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gopher1369

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Jan 20, 2012
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Sounds about right, 170 Watts TDP for the Geforce + 125 Watts TDP for the CPU, add on a bit for the rest of the system, 360 is a good guestimate for the overall maximum power draw. So my previous post stands, a good quality 450 Watt power supply will easily power this system. I'm not sure a Sentley falls under the category of "good", but it's good enough to run the system that you want it to run.
 
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