The Antec KÜHLER H2O 1250 provides maximum-performance liquid cooling for your CPU and delivers best-in-class performance in a quick, easy-to-install package. Unlike traditional liquid cooling systems, this self-contained unit comes prefilled and requires no maintenance. Two 120 mm voltage-controlled (PWM) fans and dual extra large pumps ensure quiet, efficient cooling, while the 240 mm radiator maximizes cooling surface area to dissipate heat from the highest performance CPUs on the market. Lastly, the included Antec Grid™ software helps you monitor and control the Antec KÜHLER H2O 1250's performance and allows you to customize its stylish RGB LED. Designed to unlock the maximum potential of your CPU, the Antec KÜHLER H2O 1250 delivers exceptional cooling when you need it the most.