This Intel Xeon E5405 Socket 771 Quad-Core CPU is the ideal upgrade for dual processor servers and workstations! This Xeon processor features a 2.0 GHz clock speed with a 1333 MHz bus speed and 12 MB L2 cache. It supports Intel Virtualization Technology (VT-x), Intel 64, Thermal Monitoring Technologies and Execute Disable Bit for maximum processing performance! Simply install in your motherboard's Socket 771 CPU slot and add the heat sink and fan! Order this Intel Xeon E5405 2.0 GHz Socket 771 Quad-Core CPU today!