This high performance CPU liquid cooler from Corsair combines a closed loop copper base liquid cooling system with an aluminum heatsink and high pressure fan for high performance cooling. No priming or maintenance required.Protect your hardware and increase your CPU's overclocking potential. Dual fans and a double-thick radiator deliver outstanding cooling efficiency. Monitor temperature and control lighting and fan speed on your screen. No additional hardware is necessary. The 120mm fans use wide, low-pitch blades for better static pressure to noise ratio, offering improved efficiency at lower noise levels.