Cooler Master G550M comes with 80 Plus Bronze certified and a single +12V rail. The intelligent 120mm fan speed controller with honey combo mesh increases airflow for better heat dissipation.
• Unique 3D circuit design offers high efficiency and improves the heat dissipation. It reduces the unnecessary cables which results in much lower crosstalk, signal noise and improves airflow
• Powerful Single +12V rail for superior load balancing and VGA compatibility. All series supports VGA up to Nvidia Titan.
• Modular cable designs for better cable management
• Custom DC-DC module design offers higher efficiency and voltage stability
• Haswell C6/C7 support & zero load operation
• 80 PLUS Bronze certified: up to 88% efficiency @ typical load
Review - http://www.techpowerup.com/reviews/CoolerMaster/G550M/