Introduction 2CoolTek have supplied us with an Alpha PEP66u HSF Kit for review, the PEP66 can be used on any Socket 7, PPGA and FC-PPGA, but is ideal for a ’Coppermine’ Socket 370 chip, today we will be testing the HUGE PEP66 Heatsink on a Celeron 466 S370 chip, Enjoy! it’s to be noted pictures of the Alpha PEP66 in this review are from PC Critix, permission was granted. Specifications Heatsink: PAL66A Intake Cover: CS61 Fastening Clip: CL57H Cooling Fan: Sunon 12V 60x25mm Fan Thermal Compound / Waste: Included Copper Inlay instead of aluminum (reasons for listed below) Features & Stuff Included This Alpha PEP66 heatsink (as most Alpha’s) includes a copper inlay (instead of aluminum) which does a better and faster job of dissipating the heat from the CPU core than normal aluminum does, geee feels like I’m in a science class... anyway the PEP66 uses a Sunon 60mm 23.5 CFM fan for cooling purposes, this fan on our system was pushing out around 4500 to 4600 RPM’s. Included is a CL57H mounting clip which gives you a more than adequate tight grip to hold the heatsink and chip core together. Also as expected (to be included) is some thermal compound aka GOOP to put between the copper inlay and CPU chip and of course self tapping screws are included to mount the Sunon fan on the heatsink + too top it off you even get a little Alpha sticker... all off these parts are in the picture above, except for the Sunon 60mm fan which is pictured below...