Intel Xeon E3-1280 v5 socket: LGA 1151
The Intel Xeon E3-1280 v5 uses the LGA 1151 socket on C236 workstation boards. It is a 4 core Skylake-DT flagship with 8 threads from 3.7 GHz to 4.0 GHz at 80 W with no integrated graphics.
- Socket
- LGA 1151
- Launched
- October 2015
- Cores and threads
- 4 and 8
- Base power
- 80 W
- Codename
- Skylake-DT
- Segment
- Workstation
- Family
- Intel Xeon E3
- Clocks
- 3.7 / 4.0 GHz
Intel Xeon E3-1280 v5 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Skylake cores on 14 nm |
| Clocks | 3.7 GHz base, up to 4.0 GHz turbo |
| Cache | 8 MB Smart Cache |
| Processor base power (TDP) | 80 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4-1866 and 2133 and DDR3L ECC, two channels, up to 64 GB |
| PCI Express | PCIe 3.0, 16 lanes |
| Integrated graphics | None |
| ECC memory | Supported |
| Package | LGA 1151 (FCLGA1151) |
Motherboard and chipset compatibility
Intel Xeon E3-1280 v5 needs a motherboard with a LGA 1151 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C230 series: C236 | C236 | 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 1151.
LGA 1151 at a glance
| Type | LGA, 1,151 contacts |
|---|---|
| Package size | 37.5 × 37.5 mm |
| Introduced | August 2015 |
| Memory | DDR4 on most boards (some early boards use DDR3L). DDR4 only on the second revision |
| Cooler mounting holes | 75 × 75 mm |
What the Xeon E3-1280 v5 is
The Xeon E3-1280 v5 is the flagship Skylake workstation part on LGA 1151 with C236. Intel set 4 cores and 8 threads at 3.7 GHz base with turbo to 4.0 GHz. Eight megabytes of Smart Cache cover builds. Power is 80 W on 14 nm from October 2015. No integrated graphics exist.
Top base clocks in the E3 v5 line suit single socket workstation hosts with discrete cards. Turbo to 4.0 GHz matches desktop i7 bursts with ECC protection. Eight threads handle compiles beside services. The 80 W envelope needs tower cooling.
DDR4 and DDR3L ECC over two channels to 64 GB feed the node. ECC guards workstation data. Buyers pick the 1280 v5 where top Skylake workstation clocks must run headless on C236.
Socket and motherboard compatibility
The 1280 v5 fits LGA 1151 on C236 workstation boards. The socket C236 table covers this Skylake-DT codename. Consumer 100 series boards lack ECC validation and E3 firmware. Check the board list for the 80 W flagship stepping.
ECC UDIMMs to 64 GB populate two channels. LGA 1150 never accepts Skylake silicon. A discrete card covers displays since no iGPU exists.
Memory, PCIe and cooling
DDR4-1866 and 2133 with ECC over two channels to 64 GB suit workstation hosts. DDR3L ECC options cover reuse boards. Even populations protect bandwidth.
PCIe 3.0 with 16 lanes from the CPU serves a discrete workstation card or NVMe array. Headless flagships pair with Quadro class cards. Chipset lanes handle SATA fleets.
Cooling uses 80 W tower sinks with workstation airflow. Sustained 3.7 GHz all core loads run warm. No boxed cooler ships.
Upgrade paths
On the same socket the Intel Xeon E3-1270 v5 at 3.6 GHz base below saves a little cost with the same 80 W tuning, while the Intel Xeon E3-1275 v5 adds P530 graphics for media duty. All share C236 boards where listed.
A move to E3 v6 needs a BIOS with Kaby Lake-DT support. The 1280 v5 remains the Skylake workstation clock lead.
Frequently asked questions
What socket does the Intel Xeon E3-1280 v5 use?
It uses LGA 1151 on C236 workstation boards.
How many cores does the Xeon E3-1280 v5 have?
4 cores and 8 threads at 3.7 GHz base with turbo to 4.0 GHz.
Which graphics does the Xeon E3-1280 v5 include?
None. It needs a discrete card.
What is the TDP of the Xeon E3-1280 v5?
80 W flagship power.
Sources and verification
- Intel Xeon Processor E3-1280 v5 specifications (Intel)
- Intel Xeon E3-1268L v5 Specs (TechPowerUp, Skylake-DT family data)
Facts last checked against these sources on . Page last edited on .