CPUServerReleased 2018

Intel Xeon Silver 4123

8C/16T · 3.2 GHz · 105 W

An 8-core Xeon Silver processor added to Intel's first-generation Xeon Scalable family in the first quarter of 2018. Unlike other Silver models it is a single-socket part with no UPI links, and it trades that for a high 3.0 GHz base clock with a 3.2 GHz turbo, 11 MB of L3 cache and a 105 W TDP. It supports DDR4-2400 memory and has one AVX-512 FMA unit per core.

General

Manufacturer: Intel
Model: Intel Xeon Silver 4123
Segment: Server
Generation: 1st Gen Xeon Scalable (Skylake-SP)
Codename: Skylake-SP
Architecture: x86_64
Microarchitecture: Skylake
Release date: 2018
Price: Search on Amazon

Cores & clocks

Cores / threads: 8 cores / 16 threads
Base clock: 3.00 GHz
Boost clock: 3.20 GHz
TDP (design W): 105 W
Unlocked: ✕ No
L2 cache: 8 MB
L3 cache: 11 MB
Technology (nm): 14 nm
14 nm

Platform

Socket: FCLGA3647
2-CPU (multi-socket): ✕ No
Integrated GPU: None
Memory type: DDR4-2400
6-channel
Memory size: Up to 512 GB
ECC memory: ✓ Yes
PCIe: PCIe 3.0 (48 lanes)

Instructions & AI

Instruction extensions: Intel SSE4.2Intel AVXIntel AVX2Intel AVX-512
NPU: None

OS support

Windows: Windows 10Windows 11 24H2Windows 11 25H2Windows 11 26H2
Linux: UbuntuFedoraArch Linux
Notes: Covered by the "Xeon Scalable Processors" (1st Generation) entry on Microsoft's Windows 11 supported Intel processor lists; Windows 11 26H2 shares the 25H2 hardware requirements. TPM 2.0 must be provided by the platform. Mainline Linux supports Skylake-SP, and most systems run Windows Server or an enterprise Linux distribution.

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