Seasonic G Series 550 W @ techPowerUp
 

In this review we will utilize our shiny new Chroma loaders and the Seasonic G-550 will have the honor to be the first PSU tested on them. The G-550 offers Gold efficiency, a semi-modular design, long warranty and promises very good performance. The best part is that all above won't cost you a fortune.

http://www.techpowerup.com/reviews/Seasonic/G550/