Solution

Nope the Corsair includes the required pci-e 6pins required to power 2x6850's.
2X6870 = requires 4xPCI-E 6pins the Corsair TXV2 only supplies 2 = although your cards includes the molex adapters = would be fine.
Psu that includes all necessary 6 pins...

Nope the Corsair includes the required pci-e 6pins required to power 2x6850's.
2X6870 = requires 4xPCI-E 6pins the Corsair TXV2 only supplies 2 = although your cards includes the molex adapters = would be fine.
Psu that includes all necessary 6 pins without the need for adapters.
XFX Core Edition PRO650W = supplied with 2 x 6-Pin, 2 x 6+2-Pin
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207014

Better case imo.
NZXT Tempest 210
http://www.newegg.com/Product/Product.aspx?Item=N82E16811146084

AMD Phenom II X4 965 Black Edition Quad Core Processor
http://us.ncix.com/products/?sku=46281&vpn=HDZ965FBGMBOX&manufacture=AMD&promoid=1009
 
Solution