The Intel Xeon L5645 was a server/workstation processor with 6 cores, launched in February 2011. It is part of the Xeon lineup, using the Westmere-EP architecture with Socket 1366. Thanks to Intel Hyper-Threading the core-count is effectively doubled, to 12 threads. To further increase overall system performance, up to two Xeon L5645 CPUs can link up in a multi-processor (SMP) configuration. Xeon L5645 has 12 MB of L3 cache and operates at 2.4 GHz by default, but can boost up to 2.933 GHz, depending on the workload. Intel is building the Xeon L5645 on a 32 nm production process using 1,170 million transistors. The multiplier is locked on Xeon L5645, which limits its overclocking capabilities.
With a TDP of 60 W, the Xeon L5645 consumes typical power levels for a modern PC. Intel's processor supports DDR3 memory with a triple-channel interface. The highest officially supported memory speed is 1333 MT/s, but with overclocking (and the right memory modules) you can go even higher. 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 system, Xeon L5645 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 L5645, which greatly improves virtual machine performance. Additionally, IOMMU virtualization (PCI passthrough) is supported, so that guest virtual machines may directly use host hardware.