Proper graphics card or my Vapor X 7970

I recently ordered a Vapor X edition of Sapphire's AMD 7970 ghz edition! Still hasn't come in the mail yet, but I am expecting it tomorrow. =D

I am in the process of rebuilding my PC and was wondering which PSU would be enough to Crossfire these down the road.

Currently, I am eying a Silver Certified Corsair HX 1050 watt PSU. However, I have read that Vapor X cards require slightly different pins. Just wondering, will that PSU be able to connect to it, and later on down, Crossfire?

If not, some recommendations would be great.
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  1. According to this review you only need about 750w to cfx 7970's
    http://www.guru3d.com/articles_pages/asus_radeon_hd_7970_crossfire_review,7.html
    I calculated how much you would need with this
    http://www.extreme.outervision.com/PSUEngine
    and I was very liberal, a lot of fans, multiple hard drives, 4 sticks of ram, 2 disk drives, high end mobo, and fx 8350. It still only came out to 744w recommended with a minimum of 694w. I would do 800-850w so you have a decent amount of head room for overclocking.
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