Need Power supply help!

I am going to build a new PC, config will be

Core i7-920
Gigabyte ex58-UD5
Corsair 12 gb ddr3
ATI 5970
GTS 250 as PHYSX (If i get GTX 480)
Cooler Master HAF 932

I think the upcoming GTX 480 will Consume same power as of ATI 5970 or more than that. I will use my current GTS 250 as physx processor.
Please Recommend me a good PSU.
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More about need power supply help
  1. Corsair 850HX
    Seasonic M??? 850 (Don't remember the exact model number but it is the new 80Plus Gold model)
    Antec SG-850
    Corsair 850TX
    Corsair 750TX

    Anyone of those five will be strong enough for your setup.
  2. Here are the official power requirements for the ATI Radeon™ HD 5970 video card.

    ATI Radeon™ HD5970 System Requirements:

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

    650 Watt or greater power supply with one 75 watt, 6-pin and one 150 watt, 8-pin PCI Express® power connectors

    850 Watt or greater power supply with two 75 watt 6-pin, and two 150 watt, 8-pin, PCI Express connectors for ATI CrossFireX™ technology in dual mode

    The power supply recommendations are for an entire pc system.

    The new Corsair HX850, Silver Certified power supply would be an appropriate choice:

    Corsair has a reputation for high quality power supplies. They consistently earn high marks in technical reviews. They are very stable and reliable. The HX850 comes with an excellent 7 year warranty.

    Here is a link to a technical review:
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