Help me chose a power supply

Well I'm building my own computer and every computer needs a power supply, which I don't know how to choose.

Here is what my computer will have.:

Intel i7-960 CPU
ASUS Rampage III Extreme Motherboard
Zalman CNPS9700 CPU Cooler
G.Skill Turbulence 12GB DDR3 1600 RAM
ZALMAN ZM-RC1000 RAM Fan
ATI Radeon Pro HD 2400 XT Graphic Card -- will upgrade to something like Radeon HD 5870 in January


So what PSU should I get?

Thanks for reading
4 answers Last reply
More about help chose power supply
  1. Lets take a big step back and rebalanced this system. You are getting an i7 960, 12GB of ram, and a Rampage III board, but sticking with a 2400XT? What are you doing with this system?

    As to your original question, do you intend to crossfire 5870s in the future? If so there i recommend a good 750W unit with 60A on the 12V rails like the Corsair 750TX or the Antec TP-750, if you only intend to do a single 5870 a good 500-550W unit like the Seasonic S12II 520, Antec TP-550 or Corsair 550VX would all be fine. Depending on where you are buying from and what case you are getting you might be able to find a combo on one of those units to make it a really good deal.
  2. While you didn't list the number of HDDs or CD/DVDRWs, you should do fine with an 80+certified 550W or 650W PSU. I've been very happy with my Corsair CMPSU-650TX for the last 18 months. Corsair also makes modular versions, where you only install the power leads you actually need - helps with cable management inside the case.
  3. Here you have some good options for you:

    ANTEC EarthWatts 650W (by Delta Electronics)
    ANTEC TruePower New 550W (by Seasonic) (modular)
    CORSAIR VX550 550W (by CWT)
    ENERMAX PRO82+ (EPR525AWT II) 525W
    ENERMAX MODU82+ (EMD525AWT II) 525W (modular)
    SEASONIC S12II Bronze (SS-520GB) 520W
    THERMALTAKE ThoghPower XT (TPX-575M) 575W (by CWT) (modular)
    OCZ Fatal1ty 550W (by Sirtec) (modular)
    COOLER MASTER Silent Pro M (RS-600-AMBA-D3) 600W (by Enhance Electronics) (modular)
    GIGABYTE Odin GT (GE-S550A-D1) 550W (by CWT) (modular)
  4. treefrog07 said:
    While you didn't list the number of HDDs or CD/DVDRWs, you should do fine with an 80+certified 550W or 650W PSU. I've been very happy with my Corsair CMPSU-650TX for the last 18 months. Corsair also makes modular versions, where you only install the power leads you actually need - helps with cable management inside the case.


    I will use it as a gaming computer. Sorry that I forgot to say that I will have 2 HDDs and 2 CD/DVDRWs.

    So I'll be good with a 750w PSU?
    Edit: No I won't crossfire the cards.
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