Corsair HX Series, HX1000, 1000 Watt, Fully Modular Power Supply, 80+ Platinum Certified, CP-9020139-NA. 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies. Fully Modular: Allows user to only use the cables they need for a cleaner looking build with better airflow. 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads, plus 12V Rail Switch: Gives the user the choice of a single plus 12V rail or multiple plus 12V rails. ATX12V v2.4 and EPS 2.92 standards and is backward compatible with ATX12V 2.2, 2.31 and ATX12V 2.01 systems. 5.9 x 7.1 x 3.39 inches.