Intel Xeon E3-1285 v4 socket: LGA 1150
The Intel Xeon E3-1285 v4 uses the LGA 1150 socket on C226 workstation boards. It is a 4 core Broadwell-DT flagship with 8 threads from 3.5 GHz to 3.8 GHz at 95 W with Iris Pro Graphics P6300.
- Socket
- LGA 1150
- Launched
- June 2015
- Cores and threads
- 4 and 8
- Base power
- 95 W
- Codename
- Broadwell-DT
- Segment
- Workstation
- Family
- Intel Xeon E3
- Clocks
- 3.5 / 3.8 GHz
Intel Xeon E3-1285 v4 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Broadwell cores on 14 nm |
| Clocks | 3.5 GHz base, up to 3.8 GHz turbo |
| Cache | 6 MB Smart Cache plus 128 MB eDRAM |
| Processor base power (TDP) | 95 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 1150 MHz, 48 execution units) |
| ECC memory | Supported |
| Package | LGA 1150 |
Motherboard and chipset compatibility
Intel Xeon E3-1285 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 E3-1285 v4 is
The Xeon E3-1285 v4 is the flagship Broadwell workstation part on LGA 1150 for media servers. Intel set 4 cores and 8 threads at 3.5 GHz base with turbo to 3.8 GHz. Six megabytes of Smart Cache plus 128 MB of eDRAM feed the cores. Power is 95 W on 14 nm from June 2015.
Top base clocks in the E3 v4 line suit single thread workstation tasks with background renders. Iris Pro Graphics P6300 from 300 MHz to 1150 MHz with 48 units leads integrated transcoding. Eight threads cover parallel encodes. The 95 W envelope needs tower cooling.
DDR3 ECC over two channels to 32 GB feeds the node. ECC protects media assets. Buyers pick the 1285 v4 where top Broadwell workstation clocks with Iris Pro must stay on C226.
Socket and motherboard compatibility
The 1285 v4 fits LGA 1150 on C226 workstation boards. The socket C226 table covers this codename. High power LGA parts need workstation VRMs, so consumer boards are out. Verify cooler clearance in pedestal cases.
ECC UDIMMs to 32 GB are standard. LGA 1151 never boots Broadwell. Board display outputs decide whether Iris Pro reaches monitors.
Memory, PCIe and cooling
DDR3-1866 ECC over two channels to 32 GB suits media servers. Bandwidth feeds both cores and Iris Pro. Full populations help 4K transcodes.
PCIe 3.0 with 16 lanes from the CPU serves 10 GbE or NVMe arrays. Transcode nodes need network throughput for streams. A fast NIC matters more than a discrete GPU here.
Cooling uses 95 W tower heatsinks with workstation airflow. Sustained 3.5 GHz all core loads run hot. No boxed cooler ships.
Upgrade paths
On the same socket the Intel Xeon E3-1285L v4 at 3.4 GHz base with 65 W tuning nearby saves power, while the Intel Xeon E3-1284L v4 at 2.9 GHz base with 47 W tuning saves more. All share C226 boards where listed.
A move to E3 v5 needs C236. The 1285 v4 remains the Broadwell workstation clock lead.
Frequently asked questions
What socket does the Intel Xeon E3-1285 v4 use?
It uses LGA 1150 on C226 workstation boards.
How many cores does the Xeon E3-1285 v4 have?
4 cores and 8 threads at 3.5 GHz base with turbo to 3.8 GHz.
Which graphics does the Xeon E3-1285 v4 include?
Intel Iris Pro Graphics P6300 with 128 MB eDRAM.
What is the TDP of the Xeon E3-1285 v4?
95 W flagship power.
Sources and verification
- Intel Xeon Processor E3-1285 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 .