Intel Xeon W-2125 socket: LGA 2066
The Intel Xeon W-2125 uses the LGA 2066 socket on C422 workstation boards. It is a 4 core Skylake-W workstation chip at 120 W with boost to 4.5 GHz.
- Socket
- LGA 2066
- Launched
- August 2017
- Cores and threads
- 4 and 8
- Base power
- 120 W
- Codename
- Skylake-W
- Segment
- Workstation
- Family
- Intel Xeon W
- Clocks
- 4.0 / 4.5 GHz
Intel Xeon W-2125 specifications
| Cores | 4 |
|---|---|
| Threads | 8 |
| Core architecture | Skylake-W on 14 nm |
| Clocks | 4.0 GHz base, up to 4.5 GHz Turbo |
| Cache | 8.25 MB L3 |
| Processor base power (TDP) | 120 W |
| Manufacturing process | 14 nm |
| Memory support | DDR4-2666, four channels, up to 512 GB with ECC |
| PCI Express | PCIe 3.0, 48 lanes from the CPU |
| Integrated graphics | None |
| Multiplier | Locked |
| ECC memory | Yes |
| Package | FCLGA2066 (45.0 × 52.5 mm) |
Motherboard compatibility
Intel Xeon W-2125 needs a motherboard with a LGA 2066 socket. Chipset by chipset data for this codename is not recorded yet. See the LGA 2066 chipset list and the board maker's CPU support list.
LGA 2066 at a glance
| Type | LGA, 2,066 contacts |
|---|---|
| Package size | n/a |
| Introduced | June 2017 |
| Memory | DDR4-2933, four channels, up to 256 GB |
| Cooler mounting holes | 80 × 80 mm |
What the Xeon W-2125 is
The Xeon W-2125 is a four core, eight thread workstation processor from Skylake-W. It launched in August 2017 with a 4.0 GHz base and up to 4.5 GHz Turbo at 120 W. Four cores at the highest workstation clocks cover CAD where single thread pace decides feel.
Eight point two five megabytes of L3 cache feed four cores. The 4.0 GHz base was among the highest workstation bases of its year, while 4.5 GHz boost leads peaks. One hundred twenty watts in a quad core reflect sustained high clocks.
No integrated graphics are present. Quad channel DDR4-2666 ECC suits large models with error cover. Forty eight PCIe lanes allow professional GPUs.
Intel aimed the W-2125 at clock hungry workstations above the W-2123. Model interaction stays fluid all day. Locked multiplier keeps fleets stable.
Socket and motherboard compatibility
The W-2125 fits LGA 2066 on C422 with ECC. X299 boards lack workstation ECC features. Check the board list for stepping.
Four channels and 48 lanes suit single socket towers with professional graphics. The Socket vs chipset: what decides whether a CPU works guide explains C422 use.
The Xeon W-2123 is the lower clock sibling on the same socket. The W-2133 adds two cores where threads help.
Memory, PCIe and cooling
DDR4-2666 ECC in four channels up to 512 GB is the workstation target. Quad channel mode needs four DIMMs. ECC protects long modeling sessions.
Forty eight PCIe lanes feed GPUs and NVMe scratch. Towers balance graphics and storage per manuals.
One hundred twenty watts cool with workstation tower air. High sustained clocks need good airflow.
Upgrade paths
On C422 the step is W-2133 or W-2145 for more cores, reusing board and DDR4.
Past LGA 2066 a new platform is required.
Frequently asked questions
What socket does the Xeon W-2125 use?
It uses LGA 2066 on C422 workstation boards.
How many cores does the W-2125 have?
Four cores with eight threads at 4.0 GHz base with up to 4.5 GHz Turbo.
Does the W-2125 support ECC?
Yes, with DDR4-2666 ECC in four channels up to 512 GB.
When did the W-2125 launch?
August 2017 with the Skylake-W workstation lineup.
Sources and verification
Facts last checked against these sources on . Page last edited on .