AMD Phenom II X4 850 3.3GHz 4x512KB Socket AM3 Quad-Core CPU AMD Phenom II X4 850 3.3 GHz Socket AM3 Quad-Core CPU General Features: AMD Phenom II X4 850 Quad-Core processor 3.3 GHz clock speed 4 x 512 KB L2 cache 2000 MHz HT Speed Socket AM3 95W TDP 45 nm SOI CMOS AMD64 with Direct Connect Architecture HyperTransport 3.0 Technology AMD Virtualization Technology AMD PowerNow! Technology (Cool n Quiet Technology)