Sapphire Radeon HD 6850 Crossfire-X Required Power?

The thread "says" it all. I was just wondering if a 650 Watt Visiontek PSU will suffice crossfire-x with the 6850?

I know its 500W for one GPU, then hear additional 130W is needed for crossfire-x. Thus, putting me at 630W of required power, but most do not take in all of the other components that require power; i.e. external USB 2.0/3.0 HDD's, mouse, keyboard, etc. that draw power from the PSU. I know there is an extra 20W of power, but I would hate to get all the opinions I can to make sure I won't lose my PSU from plugging in something like my external HDD's and not having enough power to support it all.

Thanks for taking the time to read this.
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  1. With a Corsair 650 watt at no problem you could handle Crossfire 6850 no problem. A Visiontek might be asking a bit. but you should be fine, i mean you seem to have a sufficient amount of power enough to run it all
  2. Rockdpm said:
    With a Corsair 650 watt at no problem you could handle Crossfire 6850 no problem. A Visiontek might be asking a bit. but you should be fine, i mean you seem to have a sufficient amount of power enough to run it all


    I haven't hooked it up for Crossfire-X yet, sorry about the misunderstanding. But, thank you a lot Rockdpm!
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