Hydro Series H100i v2 Extreme Performance Liquid CPU Cooler. The Hydro Series H100i v2 is an extreme performance all-in-one liquid CPU cooler for cases with 240mm radiator mounts. The 240mm radiator and dual SP120L PWM fans provide the excellent heat dissipation you need for highly overclocked CPUs. Corsair Link is built in so you can monitor temperatures adjust cooling performance and customize LED lighting directly from your desktop.