OCZ game xstream 600 vs. Corsair tc650w

[Deadpixel]

I'd go with neither since I still believe the best brands are still Seasonic and Pc Power and Cooling.

I'd go with either of the following
Newegg.com - PC Power & Cooling S61EPS 610W Continuous @ 40°C EPS12V SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Power Supplies
Newegg.com - PC Power & Cooling S75QB 750W ATX12V / EPS12V SLI NVIDIA SLI Certified (Dual 8800 GTX and below) CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Power Supplies
Newegg.com - SeaSonic S12 Energy Plus SS-650HT 650W ATX12V V2.3 / EPS12V V2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply - Power Supplies