PSU Suggestions

[TheWoz2010]

I'm in the process of building a quality computer that will last for long time.
Specifications:
Intel Core i7 960:
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115224

GTX 570 Superclocked:
http://www.newegg.com/Product/Product.aspx?Item=N82E16814130595

ASUS Sabertooth x58
12GB Corsair Vengeance RAM
Coolermaster V8 CPU Heatsink
Coolermaster HAF 922

The PSU's im interested in:
XFX PRO850W Semi-Modular 80 Plus Silver Certified 850 Watt Active PFC Power Supply:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207017

CORSAIR Professional Series HX850 850W ATX12V 2.3 / EPS12V 2.91 80 PLUS SILVER Certified Modular Active PFC Power Supply:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139011

My question is, will these be sufficient enough if i decided to put two GTX 570s superclock into this system? If no may someone please refer me to a quality psu?

Thanks for the time and suggestions ahead of time.

 

[StrangleHold]

Yeah, the power supply is ok. But I would get a i7 2600k, if not a i5 2500K and a socket 1155 motherboard.

 

[claptonman]

That is sufficient. Both PSUs are of high quality, but personal preference, I would choose the corsair.

500th post!

And a platinum member now.

 

[TheWoz2010]

I already have the Motherboard and the cpu. Regardless of the choice i made, it will be a significant improvement over a dell xps 400 that has a pentium D cpu and a 9800 GT graphics card. I wanted to double check to ensure that if i decided to throw 2 cards into this system the psu can handle it on top of the CPU. I do not plan on overclocking as i've read in my motherboards manual it automatically does it at a very safe setting.

 

[StrangleHold]

Yes either power supply would be fine.