The Intel Xeon L5609 was a server/workstation processor with 4 cores, launched in March 2010. It is part of the Xeon lineup, using the Westmere-EP architecture with Socket 1366. To further increase overall system performance, up to two Xeon L5609 CPUs can link up in a multi-processor (SMP) configuration. Xeon L5609 has 12 MB of L3 cache and operates at 1866 MHz. Intel is building the Xeon L5609 on a 32 nm production process using 1,170 million transistors. The multiplier is locked on Xeon L5609, which limits its overclocking capabilities.
With a TDP of 40 W, the Xeon L5609 consumes typical power levels for a modern PC. Intel's processor supports DDR3 memory with a triple-channel interface. ECC memory is supported, too, which is an important capability for mission-critical systems, to avoid data corruption. For communication with other components in the machine, Xeon L5609 uses a PCI-Express Gen 2 connection. This processor lacks integrated graphics, you might need a graphics card.
Hardware virtualization is available on the Xeon L5609, which greatly improves virtual machine performance.