How much PSU do i need?

i am building a custom build PC, how much PSU do i need for this system

http://www.amazon.com/gp/wishlist/35TB4J3LZ1NPA/ref=reg_hu-rd_add_wl

1 Monitor (possibly dual screen in the future)

1 GTX 680..dont think ill do SLI.

if i do do SLI or get a new GPU in teh future (new gtx 690 or newer ones they make) how much PSU will i need?

im thinkign of getting this one

http://www.amazon.com/Corsair-Professional-Certified-1050-Watt-Compatible/dp/B00539M4M0/ref=sr_1_1?s=pc&ie=UTF8&qid=1336179577&sr=1-1
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  1. pianopeter55 said:
    i am building a custom build PC, how much PSU do i need for this system

    http://www.amazon.com/gp/wishlist/35TB4J3LZ1NPA/ref=reg_hu-rd_add_wl

    1 Monitor (possibly dual screen in the future)

    1 GTX 680..dont think ill do SLI.

    if i do do SLI or get a new GPU in teh future (new gtx 690 or newer ones they make) how much PSU will i need?

    im thinkign of getting this one

    http://www.amazon.com/Corsair-Professional-Certified-1050-Watt-Compatible/dp/B00539M4M0/ref=sr_1_1?s=pc&ie=UTF8&qid=1336179577&sr=1-1

    ???
    http://www.tomshardware.com/forum/333648-28-power-supply

    For your specs with a single GTX680 a 550 watt psu will provide plenty of headroom, it's what's reccomended by the manufacturer
    http://hexus.net/tech/reviews/cpu/37989-intel-core-i7-3770k-22nm-ivy-bridge/?page=13

    750 watts would be more than enough for SLI
    http://www.guru3d.com/article/geforce-gtx-680-sli-review/4

    GTX690, again a 750 would be more than enough
    http://www.guru3d.com/article/geforce-gtx-690-review/8

    guru3D's system draws more power than your specs will
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