Hydro Series H105 provides extreme CPU cooling performance. The 240mm top-mounted high-capacity radiator is paired with high-performance SP120L fans for the powerful heat dissipation you need for highly overclocked CPUs. And, PWM fan speed fan control lets you select the precise level of cooling power you need. Installation is easy, with an all-new mounting bracket that provides quick, tool-free assembly. The three included red, gray and blue accent rings let you match your H105 to your fan or motherboard color scheme. And, like all Hydro Series liquid CPU coolers, the H105 is completely self-contained, with no filling or maintenance required.