The cB0 PIII 700 is great and the Alpha keeps it nice and cool, 22C right now with the case at 34C. The PEP66 is made for an FC-PGA CPU so it sits flush and square with the slug and has no problems fitting on the Iwill Slotket II. Since, due to my wife, the computer is sitting in a drawer in a credenza, heat is an issue, but the Alpha does a nice job.