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Will a 350W PSU support this GPU/CPU configuration?

post #1 of 7
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I'm an electrical engineer, but I would like the opinions of experienced system builders as there's nothing more valuable than practical knowledge.

The PSU that I'm looking to use is a Fortron (FSP Group Inc.) 350W.

It has two 16.0 Amp 12V rails. 192W per rail.

Geforce says that the max power consumption of a GTX 650 Ti Boost is 134W
Legion Hardware says that the max power consumption of an FX 6100 is 225W

Immediately 225+134= 359W

(I could downclock the CPU)

http://www.legionhardware.com/articles_pages/amd_fx_8150fx_8120fx_6100_and_fx_4170,7.html

Theoretically it's not good enough, but some of you with the practical experience might disagree.

What do you guys think?
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post #2 of 7
Honestly I'd get at least a 450W or 500W. Those aren't the only things that have a decent amount of power consumption.
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post #3 of 7
Which FSP PSU you dont say anything about the model?
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post #4 of 7
FSP is actuslly a decent brand, I've used them before, BUT, with that system, that wattage is cutting it too close imo. I would get at least 500W so yer not constantly putting that PSU so high on load while gaming.
     
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post #5 of 7
Some FSP models are not very good some are decent and a few are good or even great.
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post #6 of 7

The FX-6100 doesn't draw 225W. It's a 95W TDP chip and most other sites read the total system power consumption at around 130W, I don't quite know what's going on with Legion Hardware's testing methodology. For some reason Bulldozer chips have a TDP about 30-35W lower than their actual power draw.

 

You could run that system on a 350W PSU but personally I would go with a 450W.

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post #7 of 7
Quote:
Originally Posted by Frazz View Post

I'm an electrical engineer, but I would like the opinions of experienced system builders as there's nothing more valuable than practical knowledge.

The PSU that I'm looking to use is a Fortron (FSP Group Inc.) 350W.

It has two 16.0 Amp 12V rails. 192W per rail.

Geforce says that the max power consumption of a GTX 650 Ti Boost is 134W
Legion Hardware says that the max power consumption of an FX 6100 is 225W

Immediately 225+134= 359W

(I could downclock the CPU)

http://www.legionhardware.com/articles_pages/amd_fx_8150fx_8120fx_6100_and_fx_4170,7.html

Theoretically it's not good enough, but some of you with the practical experience might disagree.

What do you guys think?

and 192*2=384 or 10% more than it's total rated output. i'm surprised you didn't see that.

now why? because each rail may have an OCP @ 16A individually but the combined current output would be much less. this is why multi rail systems are bad not great for lower wattage PSUs.

btw, which FSP 350 is it?
http://www.realhardtechx.com/index_archivos/FSP.htm

also nvidia always gives/over estimates power draws for their gpus- a 650ti boost will use ~110 watts while gaming.
http://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_650_Ti_Boost/23.html
forget the max graph - you'll never hit the furmark numbers.

and as twerk pointed out - 225 watts for a FX-6100 just doesn't seem right. unfortunately the PSU used in the test bench wasn't stated so you can't account for power loss because of efficiency.

http://www.hardwareluxx.de/index.php/artikel/hardware/prozessoren/20405-test-amd-fx-6100-und-fx-4100.html?start=1

subtract the ~20 watts (176.-20=156) for the 6970 gpu and accounting for PSU effciency (Corsair HX1000) of 90% (it will actually be lower since the power draw is under 20%)
156.2*.9=~140.6watts

141+110= 251 watts. wink.gif

EDIT:
oh yeah, sorry forgot to really answer your question:

could you use the PSU, yeah. but since bulldozer is a power hog if you overclock, don't do that!
Edited by looniam - 7/12/14 at 3:40pm
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