Antec TriCool case fan

3 speeds. 3 sizes. The only answer you need - Antec TriCool - balance necessary cooling with quietness.

Double ball-bearing design lasts longer than conventional fans. 3-speed switch lets you balance quiet performance with maximum cooling. 3-pin and 4-pin power connectors provide convenient connections to your motherboard or power supply. Fan-speed monitoring capability included (requires compatible motherboard).