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What wattage PSU should I get?

Last response: in Components
July 3, 2012 6:46:54 PM

Hello. I am building my first computer this summer and would like to know what wattage power supply I should order for it. Here are the specs:

-Intel Core i7-2600k Sandy Bridge processor, overclocked to 4.0GHz, cooled by a Cooler Master Hyper 212 EVO cooler
-NVIDIA GTX 570 graphics card
-2 x 4GB DDR3 RAM
-64GB 2.5-inch SSD
-2TB 3.5-inch mechanical hard drive
-4x 120mm blue LED case fans
-"normal" MSI ATX motherboard, nothing too special about it

I want this computer to be really power efficient. I currently have a 550W Rosewill PSU picked out, do you think I should upgrade to a 600, or 650W PSU?


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a c 165 ) Power supply
July 3, 2012 7:04:02 PM

the rosewill capstone 550w (i assume you are talking about that unit) will be fine for your set up. if you are looking at hive series, i would personally go with the 650w version

Core i7 Test System Specs

Intel Core i7-3960X Extreme Edition (3.30GHz)
x4 2GB G.Skill DDR3-1600(CAS 8-8-8-20)
Gigabyte G1.Assassin2 (Intel X79)

July 3, 2012 7:11:03 PM

You need a PSU with a single 12A rail of at least 30A, I would get 35 to be safe. If it is multi rail, one should be at least 20A for the GTX 570, and you should not have a problem with the other rails.