Correct PSU wattage for my PC

Tom Andrews · Feb 6, 2016

Hi,

Please could you advise whether the power supply I am planning on getting will have a high enough wattage to run my PC?

PSU: Seasonic P660 660W 80+ Platinum Certified Full Modular Power Supply

Specs:
Intel i7-5820k
Asus STRIX GTX-980
Asus X99 Deluxe
Corsair Hydro Series H100i 240 mm
G Skill Ripjaws 16GB DDR-4 RAM
Samsung 850 Evo SSD
WD 3TB 7200 HDD
2 x Corsair 140mm LED fans
3 x Corsair 120 mm LED fans
Samsung 24x R/W DVD drive
Razer blackwidow chroma keyboard
Razer Ouroboros Elite

Thanks in advance,

Tom

jhall18 · Feb 6, 2016

You really should put your pc together on pcpartpicker.com, it will tell you all of these things. That psu will work, i'm pretty sure it will be close though.

Eliasand · Feb 6, 2016

Yes, you should be just fine. Great PSU choice.

Tom Andrews · Feb 6, 2016

Thanks for the quick replies!

I added up the power consumption for each component myself and then left some headroom in case I ever want to overclock/upgrade and then chose this PSU

A friend however told me that he put my system into a calculator and it recommended at least a 750w!

Just wanted to make sure this PSU would be okay

Eliasand · Feb 6, 2016

Tom Andrews :

660W will be fine, the system will draw a maximum of 400-450w at overclocked even.

InvalidError · Feb 6, 2016

Less than 200W for the CPU + everything else on the motherboard, about 300W peak for the GPU, maybe another 50W for everything else, that's 500-550W peak and 400-450W average total under full load if you don't overclock.

GPU manufacturers grossly overstate their boards' power requirements mainly because there are so many questionable or outright junk quality power supplies out there.

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