Thermaltake Extreme Volcano 12 A1745 Cooler for AMD Athlon XP and AMD Sempron Designed for AMD Athlon XP up to 3400+ and AMD Sempron up to 2800+ The best cooling, high density all copper heat sink (66 fins) Powerful 80x80x32 fan, 2 ball bearing, triple blades VR control function, fit in 3.5" hard drive bay and PCI slot Auto temperature control, all copper base