The E5506 2.13 GHz Quad Core Processor from Dell is a perfect combination of power and performance. This processor features 2.13 GHz speed, which improves the overall system efficiency. Additionally, with an integrated 4 MB of cache gives this processor faster access to larger amounts of the data used most often. With all such impressive features and more, the E5506 is an ideal base for building your machine power. This product has been tested and validated on Dell systems. It is supported by Dell technical support when used with a Dell system.