AMD Athlon II X4 640 3.0GHz 4x512KB Socket AM3 Quad-Core CPU AMD Athlon II X4 640 3.0 GHz Socket AM3 Quad-Core CPU General Features: AMD Athlon II X4 quad-core processor Model 640 3000 MHz (3.0 GHz) CPU speed 4 x 512 KB L2 cache 95W wattage 45 nm SOI CMOS Socket AM3 AMD Virtualization Technology Cool'n'Quiet 3.0 Technology AMD64 with Direct Connect Technology HyperTransport Technology