The 2.66 GHz Quad Core Xeon second processor X5355 from Dell is designed for multi-processor systems. The quad-core processor architecture places four execution cores, or computational engines, within a single processor. This processor, with 1333 MHz front side bus speed, offers excellent performance and headroom for peak Internet server loads, resulting in faster response times, support for more users and improved scalability. The incorporated Virtualization Technology provides hardware-assistance to virtualization software enhancing virtual environment. In addition, the Enhanced Speedstep technology helps reduce average system power consumption and enhances system acoustics.