Thermosonic Thermoengine V60-4210 for my Abit KT7A-RAID motherboard & Athlon AXIA 1GHz Chip at 1.4GHz when OCUK sold these with the pencil lines already drawn in to unlock the multiplier, must have been about 2001. I bought a Delta 60mm EHE fan for it AKA "The Screamer" as it ran at 8000rpm, listening to it really wasn't pleasant so it didn't stay on the heatsink for very long.