The Xeon X5550 2.66 GHz Quad Core Processor from Dell is designed to enhance the performance and the speed of your system. This processor features 6.4 GT/s bus speed with 45nm manufacturing technology. An integrated L3 cache gives the processor core faster access to larger amounts of the data used most often. Additionally, the Virtualization Technology enables migration of more environments. It supports enhanced Speedstep technology that allows tradeoffs to be made between performance and power consumption.