CPUServerReleased Feb 24, 2025

Intel Xeon 6521P

24C/48T · 4.1 GHz · 225 W

The Xeon 6521P is a 24-core, 48-thread single-socket model of Intel's Xeon 6500P series (Granite Rapids-SP), launched on February 24, 2025. Built for one-socket servers, it runs all cores at up to 4.1 GHz and exposes 136 PCIe 5.0 lanes, suiting storage and I/O-heavy systems. It launched at $1,250, and Intel later raised its recommended price.

General

Manufacturer
Intel
Model
Intel Xeon 6521P
Segment
Server
Generation
Xeon 6 (Granite Rapids-SP)
Codename
Granite Rapids-SP
Architecture
x86_64
Microarchitecture
Redwood Cove
Release date
Feb 24, 2025
Price
$1,500Search on Amazon

Cores & clocks

Cores / threads
24 cores / 48 threads
Base clock
2.60 GHz
Boost clock
4.10 GHz
TDP (design W)
225 W
Unlocked
✕ No
L2 cache
48 MB
L3 cache
144 MB
Technology (nm)
3 nm
Intel 3

Platform

Socket
FCLGA4710
2-CPU (multi-socket)
✕ No
Integrated GPU
None
Memory type
DDR5-6400 (RDIMM)
8-channel
Memory size
Up to 4,096 GB
ECC memory
✓ Yes
PCIe
PCIe 5.0 (136 lanes)

Instructions & AI

Instruction extensions
SSE4.2AVXAVX2AVX-512AMX
NPU
None

OS support

Linux
UbuntuFedoraArch Linux
Notes
Xeon 6 server processors do not appear on Microsoft's Windows 10 (22H2) or Windows 11 (24H2, 25H2) supported Intel processor lists, and no 26H2 list has been published. As a server processor it is mainly deployed with Windows Server and enterprise Linux distributions.

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