Get the power of four CPUs in one with this AMD Phenom II X4 850 Socket AM3 Quad-Core CPU! The HDX850WFK42GM features a 3.3 GHz clock speed and a 4 x 512 KB of L2 cache. This CPU also features HyperTransport 3.0 Technology, eliminating the bottlenecks of older systems by moving the memory controller from the motherboard onto the CPU and providing a high-bandwidth interface for the CPU to access your system's RAM. Simply install the HDX850WFK42GM in the motherboard, add the heat sink and fan and you're ready for fast quad-core computing Get your AMD Phenom II X4 850 3.3 GHz Socket AM3 Quad-Core CPU today!