I only got a option between these 2 becuase of my budget 1. Corsiar vs 650w or 2.thermaltake litepower 650w ill be running a msi h81-P33 mb , i5 4570 cpu , 8gb corsiar vengeance , 660 gtx , 1tb hd , dvd writer and 5 case fans so what one should I take and why ? And will it be enough for my system one of the above psu's
The Corsair for sure. It is much better quality. You could easily use 500w for your system and be perfectly fine. It will likely not draw more than 300w under full 100% load. 650w is pretty overkill for this build.