Intel Xeon E5-2649 v3 socket: LGA 2011-v3

What the Xeon E5-2649 v3 is

The Xeon E5-2649 v3 is a Haswell-EP ten core with DDR3 support for transitional servers on LGA 2011-v3. Intel set ten cores and 20 threads at 2.3 GHz base with turbo to 3.0 GHz. Twenty five megabytes of Smart Cache serve guests. Power is 105 W on 22 nm from September 2014. Like the 2629 v3, it also supports DDR3 memory besides DDR4, which helps sites that reuse registered DDR3 stocks.

Ten cores consolidate virtual machines per socket at modest power. Base clocks hold all core work while turbo covers control tasks. Large cache trims memory waits. ECC guards data across memory types. No integrated graphics exist. Memory reuse shapes buying here more than peak bandwidth. Operators pick the 2649 v3 where DDR3 populations must carry forward into Grantley nodes.

DDR4 or DDR3 with ECC over four channels feeds each socket with two QPI links between dual nodes. The mix is a server socket for transitional hosts where ten threads with memory choice at 105 W are wanted.

Socket and motherboard compatibility

The E5-2649 v3 fits LGA 2011-v3 on C612 Grantley boards with DDR3 capable firmware. Memory type must match the board design, since DDR3 and DDR4 never mix on one board. Check the vendor matrix for v3 stepping and memory support. X99 desktop boards never suit this server chip.

ECC RDIMMs over four channels carry memory in either type. The Socket vs chipset: what decides whether a CPU works guide is desktop focused, so follow server population rules per memory type. Cooling is vendor 105 W heatsinks with rack airflow.

A standard DDR4 ten core on the same socket suits fresh builds without DDR3 stocks. Confirm board memory type before any swap.

Memory, PCIe and cooling

DDR4 or DDR3 with ECC over four channels per socket suits transitional virtualization. Even populations protect NUMA fairness. Registered DIMMs reach large counts. Speed follows type and DIMM count per manual.

Forty PCIe lanes per socket feed NICs and HBAs for fabric. Dual socket I/O should respect NUMA locality. Vendor slot maps guide choices.

Vendor 105 W cooling sustains loads with front to back air. No retail cooler exists. Inlet temperature decides turbo residency.

Upgrade paths

Within the socket the Intel Xeon E5-2660 v3 with ten DDR4 threads is a higher clock twin for fresh builds on similar boards. The Intel Xeon E5-2629 v3 with eight threads is a smaller transitional sibling with the same DDR3 option. Both share C612 mounting.

Newer sockets replace Grantley. The E5-2649 v3 covers transitional hosts where DDR3 reuse at 105 W decides buying.