PSU for this system


May 15, 2012
I am building a system which looks like this:

CPU: Intel Core i5 3550 Ivy Bridge 3.3GHz 6MB 77W LGA 1155 Processor
Mobo: AGigabyte GA-Z77-D3H LGA1155 Intel Z77 Chipset ATX Motherboard
RAM: G.Skill Gaming 8GB(4x2GB) DDR3-1333MHz CL9 RAM
HDD: Western Digital 1TB 32MB Cache SATA3 7200RPM Hard Drive
GPU: AMD Radeon HD7850 2GB GDD5 PCI-E Graphic Card
Case: Cooler Master CENTURION 5 II MID TOWER

I'm trying to decide a good PSU for this. I'm leaning towards FSP Group Aurum 700W PSU, 80PLUS Gold. Another option is Coolermaster GX750W. Are these too much or too little? Any suggestions welcome. Thanks :)
For a system using a reference clocked single Radeon HD 7850 graphics card AMD specifies a minimum of a 500 Watt or greater power supply. The power supply should also have a combined +12 Volt continuous current rating of 25 Amps or greater and have at least one 6-pin PCI Express supplementary power connector.


Apr 26, 2011
Max power consumption on this card is an estimated ~115W, I think you'd be safe with a 450W power supply that's efficient and good quality,

Antec EarthWatts Platinum Series EA-450 450W ATX12V / EPS12V SLI Ready CrossFire Ready 80 PLUS PLATINUM Certified Power Supply, only $100

Power consumption charts: