HIVE-650 and EVGA GTX670 SLI

[jkmcman2k2]

I already have a EVGA GTX 670 and a Rosewill HIVE-650. can i add another GTX 670 with this PSU? or do i need a little more power?

thank you

Card http://www.newegg.com/Product/Product.aspx?Item=N82E16814130782
PSU http://www.newegg.com/Product/Product.aspx?Item=N82E16817182132

 

[jkmcman2k2]

I have ASRock Z77 extreme 4
8gb gskill sniper
I5 3750k