The new Zerotherm BTF92 "Overclockers Edition" heatsink is a mirror image of the BTF90 that came before it, save for a different fan and the inclusion of a new fan speed controller gadget the company are bundling in now. The Zerotherm BTF92 OC ed. heatsink is compatible with socket 775 Intel Core 2 Duo/Quad/Extreme and socket 754/939/940/AM2/AM2+ AMD Athlon64 processors.