6850 CF 550watt?

[Costa95]

Will a 550watt antec Psu power my i5 2500k 6850 CF build

 

[Costa95]

Will a 550watt antec Psu power my i5 2500k 6850 CF build

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016 this is the psu

 

[ilysaml]

definitely not, a 650W or greater PSU will run your rig fine.
try those
Cooler Master Silent Pro 700W (Modular)
http://www.newegg.com/Product/Product.aspx?Item=N82E16817171037&Tpk=silent%20pro%20700
Antec HCG 750W
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371049

Note: never go cheap with PSUs it could fire out all your system, Antec Earthwatts 650W is good PSU but i don't recommend it for Crossfire configurations...