PCApex posted a review up on the Real Power 550W PSU from Cooler Master.

While Cooler Master might not have always been the best, they have always been in the top 5. Not once have they backed down from a faulty product. One step back for Cooler Master makes them take 2 steps forward. Heaven forbid if they take a step forward, can we say Juggernaut? Cooler Master had great success with the Real Power 450 ACLX PSU, and here they are trying to continue that success with the Real Power RS-550-ACLY PSU and looking to take those extra 2 steps forward once again.

Cooler Master Real Power 550W PSU Review