AMD
CPUServerReleased Jul 23, 2026

AMD EPYC 9966

192C/384T · 4.0 GHz · 600 W

The EPYC 9966 is a 192-core, 384-thread model of AMD's 6th Gen EPYC 9006 series, announced on July 23, 2026, built for the high-end SP7 platform. Its density-optimized Zen 6c cores run at 2.9 GHz base and up to 4.0 GHz boost with 768 MB of L3 cache, aimed at cloud-scale and other throughput-oriented workloads. It supports one- or two-socket systems; SP7 provides sixteen channels of DDR5 RDIMM or MRDIMM memory per socket and 96 lanes of PCIe 6.0. CPU power defaults to 600 W and is configurable from 400 W to 600 W.

General

Manufacturer
AMD
Model
AMD EPYC 9966
Segment
Server
Generation
EPYC 9006 (Venice)
Codename
Venice Dense
Architecture
x86_64
Microarchitecture
Zen 6c
Release date
Jul 23, 2026
Price

Cores & clocks

Cores / threads
192 cores / 384 threads
Base clock
2.90 GHz
Boost clock
4.00 GHz
TDP (design W)
600 W
Max: 600 W
Unlocked
✕ No
L2 cache
192 MB
L3 cache
768 MB
Technology (nm)
2 nm
TSMC N2

Platform

Socket
SP7
2-CPU (multi-socket)
✓ Yes
Up to 2 sockets
Integrated GPU
None
Memory type
DDR5-8000 RDIMM / MRDIMM-12800
16-channel
Memory size
—
ECC memory
✓ Yes
PCIe
PCIe 6.0 (96 lanes)

Instructions & AI

Instruction extensions
—
NPU
None

OS support

Linux
UbuntuFedoraArch Linux
Notes
A server processor, typically deployed with Windows Server or enterprise Linux. The EPYC 9006 series is not named on Microsoft's Windows 11 24H2 or 25H2 supported-processor lists, and it launched after Windows 10 support ended. Mainstream Linux distributions run on it; a recent kernel is recommended for full Zen 6 support.
All AMD CPUs →

Server cpus from AMD announced around the same time as the AMD EPYC 9966. Add any of them to your compare list to see the specs side by side.

AMDcpu

AMD EPYC 9016

8C/16T · 4.8 GHz · 130 W

Released
Jul 23, 2026
AMDcpu

AMD EPYC 9116

16C/32T · 4.5 GHz · 160 W

Released
Jul 23, 2026
AMDcpu

AMD EPYC 9176F

16C/32T · 5.0 GHz · 200 W

Released
Jul 23, 2026
AMDcpu

AMD EPYC 9256

24C/48T · 4.5 GHz · 190 W

Released
Jul 23, 2026