Will a 450 W PSU be able to handle a Core i5 4670k + MSI NVIDIA GTX 660?

rrbraj · Jul 22, 2014

Hi, I'm trying to build a Gaming pc with the following specs:

Core i5 4670k
MSI NVIDIA GTX 660
Corsair vengeance 8 GB DDR3
MSI Gaming 7 Mobo
Cooler Master Thunder 450W PSU
WD Black 1 TB HDD

Is the Cooler Master Thunder 450 PSU capable of handling this load? Is this configuration ideal?

Taafe · Jul 22, 2014

Yes but it wont leave much room if you want to upgrade.

bignastyid · Jul 22, 2014

It's a very low quality unit that is incapable of providing its rated power. I wouldn't suggest using it to try and power that system(or use it at all for that matter). Even if it could deliver its rated power the 12v rail is only rated for 360w which is not good.
https://www.youtube.com/watch?v=Ezk9OA7aKOE

InvalidError · Jul 22, 2014

bignastyid :

OP's system won't even reach 300W measured at the wall so 360W on the 12V rail alone would be more than enough if the PSU could reliably sustain sticker specs.

Scampi · Jul 22, 2014

GTX 660 requires 24 Amps on the 12v rail & a 450W PSU minimum + 1x 6 pin PCIE

GTX 660 - System Wattage with GPU in FULL Stress = 239W/20 amps
http://www.guru3d.com/articles_pages/msi_geforce_gtx_660_hawk_review,7.html

The Cooler Master Thunder 450W has dual 12v rails equaling 360W/30 Amps. And it has 1x 6 pin PCIE.
http://www.coolermaster.com/powersupply/thunder/thunder-450w/

You have the power, although as stated above it is close. So no overclocking, and i'd advise to look into replacing it in the very near future as soon as you can with a better quality unit from Seasonic, Antec, EVGA, XFX or even Cooler Masters VS series.

Cooler Master VS 550W: http://www.newegg.com/Product/Product.aspx?Item=N82E16817171092&cm_re=cooler_master_V550S-_-17-171-092-_-Product

InvalidError · Jul 22, 2014

Scampi :

That is 239W SYSTEM WATTAGE, which means measured at the wall for the whole system including PSU losses, CPU, CPU VRM, HDD, case fans, etc. Not many sites go through the extra trouble of measuring current on the PCIe power cables and slot to completely isolate GPU power from everything else.

After subtracting their estimated power draw from other components, Guru3D puts the GTX660's own power draw to closer to 114W, which is 9.5A.

The manufacturer's "24A requirement" is, as usual, grossly inflated to include their wild-ass-guess of how much power the rest of the system for someone buying this GPU might typically need including further inflation to account for most sub-par PSUs.

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Will a 450 W PSU be able to handle a Core i5 4670k + MSI NVIDIA GTX 660?

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