Intel Xeon E3-1231 v3 socket: LGA 1150

What the Xeon E3-1231 v3 is

The Xeon E3-1231 v3 is a popular Haswell workstation quad for single socket servers on LGA 1150. Intel set four cores and eight threads at 3.4 GHz base with turbo to 3.8 GHz. Eight megabytes of Smart Cache serve virtual guests and threaded builds. Power is 80 W on 22 nm from May 2014. No integrated graphics keeps price down for nodes with discrete cards or BMC display.

High base clocks with eight threads make it a value virtualization node for small racks. Guests share cores with Hyper-Threading while turbo lifts single thread control tasks. ECC memory guards uptime across long runs. Discrete graphics or board management cover display, since no GPU ships on die. An SSD array shapes response for daily serving. Buyers pick the 1231 v3 where i7 threads are wanted with server memory protection.

DDR3-1600 with ECC over two channels feeds the socket. The 80 W envelope fits tower and rack uniprocessor boards with standard cooling. It is a server socket for operators who want locked i7 class threads with ECC at 80 W.

Socket and motherboard compatibility

The E3-1231 v3 fits LGA 1150 on C220 series boards such as C222, C224 and C226 for ECC server use. Many desktop 8 and 9 series boards also boot it without ECC, which suits lab use. Check the vendor CPU table for v3 microcode support. Workstation features need C220 firmware.

DDR3 ECC UDIMMs populate two channels. The Socket vs chipset: what decides whether a CPU works guide covers desktop tiers, so use server manuals for C220 memory maps. Cooler mounting is 75 × 75 mm with 80 W towers. Chips for LGA 1151 never fit.

A move to the 1241 v3 on the same socket adds 100 MHz where single thread speed rules. Confirm BIOS support before swapping E3 v3 parts between vendors.

Memory, PCIe and cooling

DDR3-1600 with ECC across two channels suits single socket virtualization. Thirty two gigabytes covers small guest counts. Matched ECC pairs protect long runs. Non ECC DDR3 works on desktop boards for labs but drops protection.

Sixteen PCIe 3.0 lanes from the CPU feed NICs, HBAs or a single graphics card. Server designs split lanes per board manual. Chipset lanes add SATA and USB for storage. Lane planning matters more than lane count at this scale.

Boxed or vendor 80 W cooling handles 3.4 GHz sustained loads with rack airflow. The FCLGA1150 package at 37.5 × 37.5 mm fits standard mounts. Inlet air decides turbo residency during all core work.

Upgrade paths

Within the socket the Intel Xeon E3-1241 v3 at 3.5 GHz to 3.9 GHz is a 100 MHz clock step on identical boards. The Intel Core i7-4790K at 4.0 GHz to 4.4 GHz is a desktop alternative with higher clocks but no ECC. Both share LGA 1150 mounting.

A dual socket path means platforms such as LGA 2011-v3. The E3-1231 v3 covers single socket servers where eight threads at 80 W are the target.