Intel Xeon X5355 2.66 GHz 8M L2 Cache 1333MHz FSB LGA771 Passive Quad-Core Processor for $490.00

The Quad-Core Intel Xeon processor 53001 series is the industrys first quad-core processor for dual processor (DP) servers and workstations. Built on Intel Core microarchitecture, these processors deliver industry leading performance and virtualization, and offer new levels of energy efficiency to help reduce cooling and density challenges.