Intel Xeon E3-1265L v4 socket: LGA 1150
The Intel Xeon E3-1265L v4 uses the LGA 1150 socket on C226 workstation boards. It is a 4 core Broadwell-DT part with 8 threads from 2.3 GHz to 3.3 GHz at 35 W with Iris Pro Graphics P6300.
- Socket
- LGA 1150
- Launched
- June 2015
- Cores and threads
- 4 and 8
- Base power
- 35 W
- Codename
- Broadwell-DT
- Segment
- Workstation
- Family
- Intel Xeon E3
- Clocks
- 2.3 / 3.3 GHz
Intel Xeon E3-1265L v4 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Broadwell cores on 14 nm |
| Clocks | 2.3 GHz base, up to 3.3 GHz turbo |
| Cache | 6 MB Smart Cache plus 128 MB eDRAM |
| Processor base power (TDP) | 35 W |
| Manufacturing process | 14 nm |
| Memory support | DDR3 and DDR3L ECC, two channels, up to 32 GB |
| PCI Express | PCIe 3.0, 16 lanes |
| Integrated graphics | Intel Iris Pro Graphics P6300 (300 MHz to 1050 MHz, 48 execution units) |
| ECC memory | Supported |
| Package | LGA 1150 |
Motherboard and chipset compatibility
Intel Xeon E3-1265L v4 needs a motherboard with a LGA 1150 socket. The table shows which chipset series accept it.
| Series | Chipsets | Support |
|---|---|---|
| C220 series: C226 | 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 E3-1265L v4 is
The Xeon E3-1265L v4 packs Iris Pro graphics into 35 W on LGA 1150 for compact workstations. Intel set 4 cores and 8 threads at 2.3 GHz base with turbo to 3.3 GHz. Six megabytes of Smart Cache plus 128 MB of eDRAM feed cores and graphics. Power is 35 W on 14 nm from June 2015.
Low power with full Iris Pro suits small form factor nodes with media duty. Turbo covers bursts while sustained work holds base to protect thermals. Graphics from 300 MHz to 1050 MHz with 48 units transcode without a discrete card. Eight threads handle services beside encodes.
DDR3 ECC over two channels to 32 GB feeds the node. ECC suits always on operation. Buyers pick the 1265L v4 where Iris Pro must fit 35 W on a C226 compact board.
Socket and motherboard compatibility
The 1265L v4 fits LGA 1150 on C226 compact workstation boards. The socket C226 table covers this codename. Low power L suffix firmware profiles keep fans slow. Consumer boards lack ECC validation.
ECC SODIMMs or UDIMMs depend on the board size. LGA 1151 never accepts Broadwell. Confirm low profile cooler compatibility in 1U and tiny chassis.
Memory, PCIe and cooling
DDR3-1866 ECC over two channels to 32 GB suits compact media nodes. Dual channel operation decides Iris Pro speed. ECC protects long encodes.
PCIe 3.0 with 16 lanes from the CPU serves NICs and NVMe. Compact nodes use lanes for flash arrays. A 10 GbE card suits cluster traffic.
Cooling uses 35 W low profile sinks with chassis airflow. Sustained turbo needs ventilation. No boxed cooler ships with tray parts.
Upgrade paths
On the same socket the Intel Xeon E3-1284L v4 at 2.9 GHz base with 47 W tuning nearby adds clocks, while the Intel Xeon E3-1270L v4 at 3.0 GHz base without graphics covers headless duty. All share C226 boards where listed.
A move to E3 v5 needs C236. The 1265L v4 holds low power Iris Pro in Broadwell workstations.
Frequently asked questions
What socket does the Intel Xeon E3-1265L v4 use?
It uses LGA 1150 on C226 workstation boards.
How many cores does the Xeon E3-1265L v4 have?
4 cores and 8 threads at 2.3 GHz base with turbo to 3.3 GHz.
Which graphics does the Xeon E3-1265L v4 include?
Intel Iris Pro Graphics P6300 with 128 MB eDRAM.
What is the TDP of the Xeon E3-1265L v4?
35 W low power tuning.
Sources and verification
- Intel Xeon Processor E3-1265L v4 specifications (Intel)
- Intel Xeon E3-1200 v4 Family Brief (Intel, Iris Pro P6300)
Facts last checked against these sources on . Page last edited on .