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Intel Xeon Platinum 8481C

56C/112T · 3.8 GHz · 350 W

The Xeon Platinum 8481C is a 56-core, 112-thread 4th Gen Xeon Scalable (Sapphire Rapids) processor for dual-socket servers. It is an off-roadmap "C" model supplied to large cloud operators and is not listed in Intel's public product database. It runs from a 2.0 GHz base clock to a 2.9 GHz all-core turbo and 3.8 GHz single-core turbo, with 105 MB of L3 cache and a 350 W TDP.

General

Manufacturer: Intel
Model: Intel Xeon Platinum 8481C
Segment: Server
Generation: 4th Gen Xeon Scalable (Sapphire Rapids)
Codename: Sapphire Rapids-SP
Architecture: x86_64
Microarchitecture: Golden Cove
Release date: —
Price: Search on Amazon

Cores & clocks

Cores / threads: 56 cores / 112 threads
Base clock: 2.00 GHz
Boost clock: 3.80 GHz
TDP (design W): 350 W
Unlocked: ✕ No
L2 cache: 112 MB
L3 cache: 105 MB
Technology (nm): 7 nm
Intel 7

Platform

Socket: FCLGA4677
2-CPU (multi-socket): ✓ Yes
Up to 2 sockets
Integrated GPU: None
Memory type: DDR5-4800
8-channel
Memory size: Up to 4,096 GB
ECC memory: ✓ Yes
PCIe: PCIe 5.0 (80 lanes)

Instructions & AI

Instruction extensions: SSE4.2AVXAVX2AVX-512AVX-512 VNNI (Intel DL Boost)Intel AMXAES-NI
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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