The Intel Xeon E3-1220L was a server/workstation processor with 2 cores, launched in April 2011. It is part of the Xeon E3 lineup, using the Sandy Bridge architecture with Socket 1155. Thanks to Intel Hyper-Threading the core-count is effectively doubled, to 4 threads. Xeon E3-1220L has 3 MB of L3 cache and operates at 2.2 GHz by default, but can boost up to 3.4 GHz, depending on the workload. Intel is making the Xeon E3-1220L on a 32 nm production node using 504 million transistors. The multiplier is locked on Xeon E3-1220L, which limits its overclocking potential.
With a TDP of 20 W, the Xeon E3-1220L consumes only little energy. Intel's processor supports DDR3 memory with a dual-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 system, Xeon E3-1220L uses a PCI-Express Gen 3 connection. This processor lacks integrated graphics, you might need a graphics card.
Hardware virtualization is available on the Xeon E3-1220L, which greatly improves virtual machine performance. Additionally, IOMMU virtualization (PCI passthrough) is supported, so that guest virtual machines may directly use host hardware. Programs using Advanced Vector Extensions (AVX) can run on this processor, boosting performance for calculation-heavy applications.