600w enough for 5850 CF?

I currently have a 600w modxstream (i believe its tier 4) modular power supply running an e8400 @ 4ghz, single hd, and radeon 5850. I was wondering if I upgraded to a i7 setup (plan to OC to 4ghz) and crossfire 5850 would my power supply cut it? Should i keep the one i have (i would like to, bought it a few months ago) or would I have to upgrade?
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  1. Here are the official power requirements for the ATI Radeon HD 5850 and HD 5870 video cards.


    ATI Radeon™ HD5850 System Requirements:

    PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard

    500 Watt or greater power supply with two 75 watt, 6-pin, PCI Express® power connectors.

    600 Watt or greater power supply with four 75 watt, 6-pin, PCI Express® power connectors for ATI CrossFireX™ technology in dual mode.


    ATI Radeon™ HD5870 System Requirements:

    PCI Express® based PC is required with one X16 lane graphics slot available on the motherboard.

    500 Watt or greater power supply with two, 75 watt, 6-pin, PCI Express® power connectors.

    600 Watt or greater power supply with four, 75 watt, 6-pin, PCI Express® connectors for ATI CrossFireX™ technology in dual mode.

    The power supply recommendations are for an entire pc system.
  2. Should be alright, so long as your PSU has the necessary connectors.
  3. Yes it should take up the load. HD5850 are power efficient.

    But do you really need the power of two 5850s?

    What resolution do you game at?
  4. If you OC the i7 to 4ghz you'll be cutting it close.
  5. shubham1401 said:
    Yes it should take up the load. HD5850 are power efficient.

    But do you really need the power of two 5850s?

    What resolution do you game at?


    Planning to go from a 30" setup to 3x 24" eyefinity setup.
  6. harr89 said:
    Planning to go from a 30" setup to 3x 24" eyefinity setup.



    Then Dual 5850 may come in handy :)
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