The X3 is super efficient, using less electricity than other power supplies when providing power to your computer and it generates less heat. Cooling is substantial yet silent by utilizing a thermostatically controlled 135MM ball bearing fan and a honeycomb cut exhaust grill. The X3 also has full range active PFC, which improves apparent power used by the computer. The modular interface allows you to only plug in the cables you actually require for your particular PC. The X3 is ready for even the most high end gaming rigs by providing up to four 6-pin PCI-e connectors, and the 800W and 1000W models provide the newest 8-pin PCI-e connector for the latest 300W graphics cards.