Intel Xeon E5-2650L v3 socket: LGA 2011-v3

What the Xeon E5-2650L v3 is

The Xeon E5-2650L v3 is a low voltage Haswell-EP twelve core for dense efficient servers on LGA 2011-v3. Intel set twelve cores and 24 threads at 1.8 GHz base with turbo to 2.5 GHz. Thirty megabytes of Smart Cache cover many guests per watt. Power is only 65 W on 22 nm from September 2014. The L suffix marks low power for racks that cap energy while keeping thread counts high.

Twelve cores with 24 threads pack the most threads per watt of the v3 line for scale out clouds. Low clocks sip power while cache covers tenants. ECC DDR4 guards data across long runs. No integrated graphics exist. Fabric and storage shape node throughput more than peak clocks. Buyers pick the L where 120 W twelve cores would exceed rack power but threads must stay at twelve.

DDR4 ECC over four channels feeds each socket with two QPI links between dual nodes. The mix is a server socket for dense operators who buy threads per watt at 65 W.

Socket and motherboard compatibility

The E5-2650L v3 fits LGA 2011-v3 on C612 Grantley boards with low power support. Vendor tables list L parts with 65 W guidance. Check the minimum BIOS with v3 microcode. X99 desktop boards never suit low voltage server chips.

ECC RDIMMs over four channels carry memory. The Socket vs chipset: what decides whether a CPU works guide is desktop focused, so use server population rules. Cooling uses vendor 65 W heatsinks with rack airflow.

A standard 120 W twelve core on the same socket adds clocks where power allows. Confirm cooling before swapping L for standard parts.

Memory, PCIe and cooling

DDR4 ECC quad channel per socket suits dense guests. Even DIMM maps protect NUMA fairness. Large RDIMMs reach high counts. Speed steps with population per manual.

Forty PCIe lanes per socket feed NICs and HBAs for scale out traffic. Dual socket I/O should respect NUMA locality. Vendor slot maps guide controller placement.

Vendor 65 W cooling sustains loads quietly with cool inlets. No retail cooler exists. Turbo to 2.5 GHz needs per core headroom.

Upgrade paths

Within the socket the Intel Xeon E5-2680 v3 at 2.5 GHz to 3.3 GHz is a higher clock 120 W step on similar boards. The Intel Xeon E5-2630L v3 with eight cores at 55 W is a lower power sibling where watts matter most. Both share C612 mounting.

Newer efficient sockets replace Grantley. The E5-2650L v3 covers dense hosts where twelve cores at 65 W are required.