Intel Xeon E3-1275 v3 socket: LGA 1150
The Intel Xeon E3-1275 v3 uses the LGA 1150 socket. It is an 84 W quad core server part with P4600 graphics.
- Socket
- LGA 1150
- Launched
- June 2013
- Cores and threads
- 4 and 8
- Base power
- 84 W
- Codename
- Haswell-WS
- Segment
- Server
- Family
- Intel Xeon E3
- Clocks
- 3.5 / 3.9 GHz
Intel Xeon E3-1275 v3 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Haswell cores on 22 nm |
| Clocks | 3.5 GHz base, up to 3.9 GHz turbo |
| Cache | 8 MB |
| Processor base power (TDP) | 84 W |
| Manufacturing process | 22 nm |
| Memory support | DDR3-1333 and 1600, two channels, up to 32 GB, ECC |
| PCI Express | PCIe 3.0, 16 lanes |
| Integrated graphics | Intel HD Graphics P4600 (350 MHz to 1250 MHz) |
| ECC memory | Yes |
| Multiplier | Locked |
| Package | LGA 1150 (FCLGA, 1150 contacts) |
Motherboard and chipset compatibility
Intel Xeon E3-1275 v3 needs a motherboard with a LGA 1150 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C220 series | C222, C224, C226 | Works out of the box |
Board makers publish a CPU support list for every model. Check it for your exact board before buying. Chipset details for LGA 1150.
LGA 1150 at a glance
| Type | LGA, 1,150 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | June 2013 |
| Memory | DDR3 and DDR3L |
| Cooler mounting holes | 75 × 75 mm |
What the Xeon E3-1275 v3 is
Intel Xeon E3-1275 v3 is a 4 core Xeon E3 v3 server part that Intel released in June 2013 for single socket entry servers and workstations. It uses the Haswell-WS design on a 22 nm process, running at 3.5 GHz base with turbo to 3.9 GHz. The cache is 8 MB. Power is 84 W. Graphics come from Intel HD Graphics P4600 (350 MHz to 1250 MHz), which covers console output and media tasks.
The cores carry Hyper-Threading for 8 threads. The dual channel ECC memory controller suits virtualized hosting with small guests. The package integrates 16 PCIe 3.0 lanes on die.
At 84 W the Xeon E3-1275 v3 belongs to the 80 W performance group. The clocks suit hosting plus media tasks. Boards are vendor qualified LGA1150 server designs with ECC UDIMM slots. The How to find your CPU socket type guide shows how to confirm the socket before ordering parts.
Socket and motherboard compatibility
The Xeon E3-1275 v3 fits LGA 1150 in LGA form with 1,150 lands. Boards are single socket server designs with C222, C224 or C226 chipsets, qualified per model with a board BIOS that lists the exact string. Any of them boots Haswell-WS with a shipping BIOS.
Power delivery at 84 W suits 1U chassis with directed airflow and vendor heatsinks. Memory support decides more builds than power: the board must accept ECC UDIMMs. The CPU cooler compatibility by socket guide notes server sockets use board specific heatsinks. Socket vs chipset: what decides whether a CPU works covers the platform rules.
Memory, PCIe and cooling
Memory support is ddr3-1333 and 1600, two channels, up to 32 gb, ecc. ECC UDIMMs are the server choice, since they catch single bit errors in long running guests. Two matched modules give the rated bandwidth.
PCI Express is PCIe 3.0 with 16 lanes from the CPU for NICs, HBAs and SSDs. Media SKUs devote display output to the integrated block where boards wire it. Storage standards beyond SATA follow the board as well.
Cooling uses 1U server heatsinks with directed airflow. The 84 W envelope sizes the heatsink and fan wall.
Upgrade paths
Within LGA 1150 the Xeon E3-1275 v3 sits in the Xeon E3 v3 group. A same socket move adds cores, threads or clocks where the board BIOS lists the target, for example from a dual core L part to a quad core standard part. The board stays, while memory and cooler often carry over. Intel Xeon E3-1270 v3 shows another option in the same family.
A real upgrade means a new platform. Intel moved entry servers through newer sockets with DDR4 memory and many more cores. That move needs a new board, new memory and often a new chassis. Keep the LGA1150 node for secondary duty or retire it whole.
Frequently asked questions
What socket does the Intel Xeon E3-1275 v3 use?
It uses LGA 1150. Server boards with C220 series chipsets must list the exact model.
Does the Xeon E3-1275 v3 have integrated graphics?
Yes. Intel HD Graphics P4600 (350 MHz to 1250 MHz) covers console output and media tasks.
What memory does the Xeon E3-1275 v3 use?
DDR3-1333 and 1600, two channels, up to 32 GB, ECC.
Does the Xeon E3-1275 v3 support ECC?
Yes. ECC UDIMMs work where the board wiring enables them.
Sources and verification
Facts last checked against these sources on . Page last edited on .