The OCZ ZX850W-UN ZX Series ATX PSU - 850W is an excellent solution in driving today's gaming systems. The robust ZX series PSU is designed to compact and quiet. The power supply also sports a sleek look and strong stability. Cooling Fan The 850W PSU will keep your system ultra-cool with the 140mm fan, engineered to eliminate distracting noises and keep quiet running sound. Compatible PSU The highly efficient PSU is designed to easily power both NVIDIA® SLITM and ATI CrossFireTM modes and... Find out more