Way way back when, I had the Athlon XP 2500+ Barton, the Abit NF7-S2 mobo, and a Thermalright heatsink I can't remember the name of for the life of me. I know it was popular at the time, but my Google-foo is failing me.. It looked like the Thermalright SLK-900u, but that one is solid copper. Mine had a copper core and base plate, but the fins were aluminum.