550w vs 650w PSU for this budget build

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LawHeartPT

LawHeartPT

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Jan 5, 2014
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I wanted to know which psu I should get for this build. I doubt I will do any kind of overclock and I don't pretend to do crossfire. I will have a lot of cheesy leds and fans on it though.

£49.99 XFX Core Edition Pro 550w vs £54.99 OCZ ZS Series 650W


My Build:

CPU: AMD FX-8320 3.5GHz 8-Core Processor £107.93
Video Card: Sapphire Radeon HD 7870 GHz Edition 2GB Video Card £129.99

Motherboard: Asus M5A78L-M/USB3 Micro ATX AM3+ Motherboard £49.49
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive £42.00
RAM: G.Skill Ripjaws X Series 8GB (2 x 4GB) DDR3-1600 Memory £62.99
Case: CiT Vantage Type-R Gaming Case 4 LED Fans £35.01
Optical Drive: Random one that I stole from an old computer

Thanks for your time.
 
Solution
Sakkura
550W is plenty for that, and the XFX PSU is arguably a little better quality than the OCZ ZS unit.

Note that there's only a 2A difference on the 12V rail. So really there's only 24W between them.
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marshal11

marshal11

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Feb 13, 2012
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Good point. You're right.

 
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Sakkura

Sakkura

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Aug 22, 2011
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Most likely yes. Most quality PSUs can give 5-10% more than they are rated for. But you wouldn't want to run it like that, certainly not sustained (as opposed to short spikes). Ripple often increases a lot when you push a power supply beyond its spec.
 
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