XFX 850 W Modular Power Supply P1850BCAG9 (Black) Crossbreed engineering features fixed and modular cables that deliver serious performance and superior flexibility. Silver-certified, this high-efficiency, PSU runs cool and quiet. Low ripple, high stability output ensures that your rig wont freeze mid-frag. Single, high-power +12V rail eliminates problems associated with multiple +12V power distribution. 135 MM Cooling Fan