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550 watts and X-Fired 6870's

Will my Kingwin 550-watt 80+ Gold PSU be abled to handle an AMD X6 1100, and two 6870's, and 16GB RAM? I have one SSD, one HDD, and one opty drive...looking to expand on my current new build...from the looks of it, it will work as per some charts I have seen...I am just trying to make sure as I have seen a lot of the machines on here running 800-watt and above...
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  1. you could probably get away with it plus it has all the connectors you need

    CPU: Intel Core i7-920 @ 3.33GHz
    Motherboard: Asus Rampage II Extreme
    Chipset Drivers: Intel 9.1.1.1015 (Intel)
    Hard Disk: OCZ Summit (120GB)
    Memory: Patriot Viper DDR3-1333 3 x 2GB (7-7-7-20)

  2. Best answer
    A reference version of the Radeon HD 6870 has a Maximum board power of 151 Watts (i.e. 12.6 Amps from +12V rail).

    Two Radeon HD 6870 in CrossFireX mode would draw a maximum of 25.2 Amps from the +12V rails.

    The Kingwin Lazer Gold Series LZG-550 is able to deliver 45 Amps on its single +12 Volt rail.

    You have enough DC output capacity on the +12 Volt rail to handle it.
  3. Best answer selected by lowjack989.
  4. I like both answers..thanks
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