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how many watt hd7870 need under full load

I have the system below
fx 6300 3.5 ghz
sapphire hd 7870 o.c. edition 2gb 256bit
gigabyte 970a ud3p
8 gb ddr3 ram
and CORSAIR VS 650W. (600 watt from 12v)
is my power enough for crossfire?
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More about watt hd7870 full load
  1. Best answer
    The GPU itself can draw a max of 170-190W..

    Recommended PSU for a single 7870 is 500W and for CF is 600W.
    http://www.realhardtechx.com/index_archivos/Page362.htm

    So, wattage wise you have enough power but the Corsair VS series is not that good PSU and I'd recommend buying a better one if you are serious about Crossfiring. For single card, it is more than sufficient...
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