FSP Hydro X Series 550 W @ techPowerUp
 

The Hydro X line consists of three members with capacities ranging from 450 W to 650 W. All feature Gold-certified efficiency and Japanese electrolytic caps, but aren't equipped with modular cables in an effort to reduce cost. The 550 W Hydro X model will be put to the test today.

http://www.techpowerup.com/reviews/FSP/HGX550/