The 2 GHz Xeon E5405 Quad Core Processor from Dell is designed to enhance the performance and the speed of your system. This processor features 1333 MHz bus speed with 45 nm manufacturing technology, and an integrated L2 cache gives the processor core faster access to larger amounts of the data used most often. Packed with more features, the 2 GHz processor is an ideal choice for virtually all of your data demanding or standard enterprise infrastructure applications.