The Hydro Series H45 makes your PC run cooler and quieter when you replace your CPU’s stock heatsink. The compact components and flexible tubing make the Hydro Series H45 easy to install even if you’re cramped for space. It allows you to improve your CPU’s cooling efficient even in the most compact cases – as long as your case has a 120mm fan mount near the CPU, the H45 will probably fit. The H45 comes pre-filled, and never needs priming. The Hydro Series H45 makes your PC run cooler and quieter when you replace your CPU’s stock heatsink. The compact components and flexible tubing make the Hydro Series H45 easy to install even if you’re cramped for space. The Hydro Series H45 makes your PC run cooler and quieter when you replace your CPU’s stock heatsink. – 120mm radiator: more surface area for superior cooling performance – Improved coldplate and pump design: better efficiency gives you lower temperatures with less noise – Easy Mounting: quick and easy installation – Advanced SP120L PWM fan design: better high-static pressure air delivery and customizable speed