PSU recommendation ?

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ndowens

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May 24, 2014
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So far this is my build http://pcpartpicker.com/p/wPZ2bv

According to PcPartPicker, the system will need atleast 443W. Though I may overclock the cpu and gpu(though possibly won't OC) a bit. The most I would concider overclocking the cpu is 3.9 - 4.0ghz.

I read somewhere with the gpu I need to make sure the 12v rail contains one rail to provide 40A I believe. What PSU would be recommended for me? I looked at a guide on this site about PSU, and understand a little bit of it, but wanted an answer provided by more experienced people. This will be a gaming rig.
 
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Scampi
R9 280X requires 30 Amps on the 12v rail & a 550W psu minimum

I'd go with 650W to give you all the headroom you could need. These are a tier higher than the EVGA NEX:

XFX Pro 650W 80+ Bronze ($69) : http://pcpartpicker.com/part/xfx-power-supply-p1650snlb9
XFX XTR 650W Fully modular 80+Gold ($95): http://pcpartpicker.com/part/xfx-power-supply-p1650bbefx

XFX Pro/XTR 750W Fully modular 80+ Gold ($88): http://pcpartpicker.com/part/xfx-power-supply-p1750bbefx
EVGA Supernova G2 750W Fully modular 80+ Gold ($95): http://pcpartpicker.com/part/evga-power-supply-220g20750xr

(Power Supply Unit tier list: http://www.tomshardware.co.uk/answers/id-1804779/power-supply-unit-tier-list.html)
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Titan
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May 18, 2007
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The 280X maxes out at about 250W, which is just over 20A and requires a 8+6 PCIe power setup. You are not going to need 40A on a single rail unless you run practically your whole system off of it.

Since the Nova has a bunch of 20A outputs, you can simply use a pair of PCIe power connectors from different outputs to power the GPU and call it a day.
 
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Scampi

Scampi

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May 26, 2014
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R9 280X requires 30 Amps on the 12v rail & a 550W psu minimum

I'd go with 650W to give you all the headroom you could need. These are a tier higher than the EVGA NEX:

XFX Pro 650W 80+ Bronze ($69) : http://pcpartpicker.com/part/xfx-power-supply-p1650snlb9
XFX XTR 650W Fully modular 80+Gold ($95): http://pcpartpicker.com/part/xfx-power-supply-p1650bbefx

XFX Pro/XTR 750W Fully modular 80+ Gold ($88): http://pcpartpicker.com/part/xfx-power-supply-p1750bbefx
EVGA Supernova G2 750W Fully modular 80+ Gold ($95): http://pcpartpicker.com/part/evga-power-supply-220g20750xr

(Power Supply Unit tier list: http://www.tomshardware.co.uk/answers/id-1804779/power-supply-unit-tier-list.html)
 
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