CPUServerReleased Jan 10, 2023

Intel Xeon Gold 6421N

32C/64T · 3.6 GHz · 185 W

The Xeon Gold 6421N is a 32-core, single-socket networking model of Intel's 4th Gen Xeon Scalable (Sapphire Rapids) family, launched in January 2023. The N suffix marks SKUs tuned for network functions virtualization, 5G core and edge workloads. Unlike most Sapphire Rapids Gold models it does not support Advanced Matrix Extensions, focusing instead on packet processing throughput within a 185 W envelope.

General

Manufacturer: Intel
Model: Intel Xeon Gold 6421N
Segment: Server
Generation: 4th Gen Xeon Scalable (Sapphire Rapids)
Codename: Sapphire Rapids-SP
Architecture: x86_64
Microarchitecture: Golden Cove
Release date: Jan 10, 2023
Price: $2,652Search on Amazon

Cores & clocks

Cores / threads: 32 cores / 64 threads
Base clock: 1.80 GHz
Boost clock: 3.60 GHz
TDP (design W): 185 W
Unlocked: ✕ No
L2 cache: 64 MB
L3 cache: 60 MB
Technology (nm): 7 nm
Intel 7

Platform

Socket: FCLGA4677
2-CPU (multi-socket): ✕ No
Integrated GPU: None
Memory type: DDR5-4400
8-channel
Memory size: Up to 4,096 GB
ECC memory: ✓ Yes
PCIe: PCIe 5.0 (80 lanes)

Instructions & AI

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

OS support

Windows: Windows 11 24H2Windows 11 25H2Windows 11 26H2
Linux: UbuntuFedoraArch Linux
Notes: Microsoft lists 4th Generation Xeon Scalable processors as supported for Windows 11 versions 24H2 and 25H2; Microsoft has not published a separate list for 26H2, so the 25H2 status is carried over. The Windows 10 22H2 list stops at 3rd Generation Xeon Scalable. Server deployments typically run Windows Server or enterprise Linux; Sapphire Rapids is supported by mainstream Linux distributions.

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