CPUServerReleased Oct 10, 2024

AMD EPYC 9745

128C/256T · 3.7 GHz · 400 W

The EPYC 9745 is a 128-core, 256-thread model of AMD's 5th Gen EPYC 9005 series, launched on October 10, 2024. It belongs to the Turin Dense line, which uses compact Zen 5c cores built on a 3 nm-class process to fit more cores per socket for cloud and throughput-oriented workloads. Its cores are spread over eight core chiplets with sixteen cores each, giving 256 MB of L3 cache, and it runs at 2.4 GHz base, 3.45 GHz all-core boost and up to 3.7 GHz maximum boost. It offers twelve channels of DDR5-6400 memory and 128 PCIe 5.0 lanes on the SP5 platform and supports single- and dual-socket servers. The default TDP is 400 W, configurable between 320 W and 400 W. An EPYC Embedded 9745 version is offered for embedded and storage systems.

General

Manufacturer: AMD
Model: AMD EPYC 9745
Segment: Server
Generation: EPYC 9005 (Turin)
Codename: Turin Dense
Architecture: x86_64
Microarchitecture: Zen 5c
Release date: Oct 10, 2024
Price: $12,141Search on Amazon

Cores & clocks

Cores / threads: 128 cores / 256 threads
Base clock: 2.40 GHz
Boost clock: 3.70 GHz
TDP (design W): 400 W
Max: 400 W
Unlocked: ✕ No
L2 cache: 128 MB
L3 cache: 256 MB
Technology (nm): 3 nm
TSMC N3E

Platform

Socket: SP5
2-CPU (multi-socket): ✓ Yes
Up to 2 sockets
Integrated GPU: None
Memory type: DDR5-6400
12-channel
Memory size: —
ECC memory: ✓ Yes
PCIe: PCIe 5.0 (128 lanes)

Instructions & AI

Instruction extensions: SSE4.2SSE4AAVXAVX2FMA3AVX-512 (VNNIBF16)AES-NISHA
NPU: None

OS support

Windows: Windows 11 24H2Windows 11 25H2Windows 11 26H2
Linux: UbuntuFedoraArch Linux
Notes: Listed by model on Microsoft's Windows 11 24H2 supported AMD processor list, and the Windows 11 25H2 list covers the AMD EPYC 9005 Series; 26H2 keeps the 25H2 requirements. The EPYC 9005 Series is not on the Windows 10 22H2 supported processor list. Servers with this processor normally run Windows Server or an enterprise Linux distribution.