Thermaltake Venus 12 A1744 Cooler for AMD Opteron, Athlon 64, and Sempron Socket 754 Extreme high-performance 64-bit solution for AMD Opteron and Athlon 64, Athlon 64 FX, and Sempron Socket 754 Performance cooler, all copper, high density (73 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, tool-free clip, quick to install