If you're worried about leveling a cooler on your new Athlon XP core, then consider a installing a shim for added safety. Cool-Shims are the only shims on the market that are Non-Electrically conductive. Every hole on the shims are precisely cut via laser. This ensures every piece is perfect. 100% made and cut in America.

This is the All-in-One shim. It fits all the Socket A Processors out on the market today. It's also the only shim that doesn't conduct heat, unlike some copper shims.

This new shim fits all:DuronThunderbird AthlonAthlon XPDuron Morgan CoreAthlon XP Thoughbred Core

Features:Meets the UL-64V0 standardCool green marble colorTemp range: -50 - +1200 degrees FahrenheitTensile Strength: Rigid (Excellent)Excellent Electrical InsulatorWon't hold the heat next to the core like copper canMade from Phlogotite Mica