Intel Xeon W-2155 socket: LGA 2066
The Intel Xeon W-2155 uses the LGA 2066 socket on C422 workstation boards. It is a 10 core Skylake-W workstation chip at 140 W with boost to 4.5 GHz.
- Socket
- LGA 2066
- Launched
- 2017
- Cores and threads
- 10 and 20
- Base power
- 140 W
- Codename
- Skylake-W
- Segment
- Workstation
- Family
- Intel Xeon W
- Clocks
- 3.3 / 4.5 GHz
Intel Xeon W-2155 specifications
| Cores | 10 |
|---|---|
| Threads | 20 |
| Core architecture | Skylake-W on 14 nm |
| Clocks | 3.3 GHz base, up to 4.5 GHz Turbo |
| Cache | 13.75 MB L3 |
| Processor base power (TDP) | 140 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-2155 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-2155 is
The Xeon W-2155 is a ten core, twenty thread workstation processor from Skylake-W. It launched in 2017 with a 3.3 GHz base and up to 4.5 GHz Turbo at 140 W. Ten cores with ECC memory cover single socket workstations where reliability matters more than dual socket scale.
Thirteen point seven five megabytes of L3 cache feed ten cores over mesh. The 3.3 GHz base sustains all core creation work, while 4.5 GHz boost lifts single thread CAD tasks. One hundred forty watts suit tower workstations with robust cooling.
No integrated graphics ship, so discrete GPUs drive displays. Quad channel DDR4-2666 with ECC up to 512 GB suits large assemblies. Forty eight PCIe lanes allow multi GPU rendering nodes.
Intel aimed the W-2155 at mainstream workstations below 14 core parts. It balances cores, clocks and lanes for single socket towers. Locked multiplier keeps fleets stable.
Socket and motherboard compatibility
The W-2155 fits LGA 2066 on C422 workstation boards, not X299 HEDT boards. C422 enables ECC memory and workstation management. Check the board CPU list for stepping.
Boards wire four memory channels and 48 PCIe lanes for workstation I/O. Single socket towers scale to 10 cores per box with full ECC cover. The Socket vs chipset: what decides whether a CPU works guide explains C422 against X299.
The Xeon W-2135 on the same socket trims cores where clocks matter. The W-2175 adds four cores where threads dominate.
Memory, PCIe and cooling
DDR4-2666 ECC in four channels up to 512 GB is the workstation design. RDIMM and LRDIMM types appear in board lists. ECC stays enabled for error cover in long renders.
Forty eight PCIe 3.0 lanes feed workstation GPUs and NVMe arrays. Single socket towers split lanes between two cards and fast scratch SSDs. Board manuals detail slot sharing.
One hundred forty watts cool with tower air or liquid on the square mount. Workstation chassis need front to back airflow for sustained creation loads.
Upgrade paths
On C422 the step is W-2175 or W-2195 for more cores, reusing board and DDR4 where power allows it. The move shortens render times directly.
Past LGA 2066 a new workstation platform is required. Memory and GPUs often carry across.
Frequently asked questions
What socket does the Xeon W-2155 use?
It uses LGA 2066 on C422 workstation boards.
How many cores does the W-2155 have?
Ten cores with twenty threads at 3.3 GHz base with up to 4.5 GHz Turbo.
Does the W-2155 support ECC?
Yes, with DDR4-2666 ECC in four channels up to 512 GB.
How many PCIe lanes does the W-2155 have?
48 PCIe 3.0 lanes from the CPU.
When did the W-2155 launch?
2017 with the Skylake-W workstation lineup.
Sources and verification
Facts last checked against these sources on . Page last edited on .