AMDServer CPU · EPYC 7003
EPYC 7643
AMD EPYC 7643 is a Milan (Zen 3) server processor with 48/96 cores/threads. Its best published SPEC CPU 2017 result works out to 341.5 SPECrate2017_int_base per socket.
Specifications
SPEC disclosure + Wikipedia| Architecture | Milan (Zen 3) |
|---|---|
| Process | TSMC 7 nm |
| Cores / threads | 48/96 |
| Base clock | 2.3 GHz |
| Max boost | 3.6 GHz |
| L3 cache | 256 MB |
| TDP | 225 W (225-240) |
| Socket | SP3 |
| Max sockets | 2S |
| Memory | 8-ch DDR4 |
| System availability | Jun 2021 Median hardware availability date of the published SPEC results |
SPEC CPU 2017 result
Best of 17 published| SPECrate®2017_int_base per socket | 341.5 Derived by HardwareLadder: system result ÷ chips. Not an official SPEC metric. |
|---|---|
| SPECrate®2017_int_base (system) | 683 |
| Chips in tested system | 2 |
| Tested system | Cisco Systems — Cisco UCS C245 M6 (AMD EPYC 7643 96-Core, Processor) |
| Published | Sep 2021 |
| Published results for this CPU | 17 |
Full result disclosure on spec.org. SPEC®, SPECrate®, and SPEC CPU® are registered trademarks of the Standard Performance Evaluation Corporation. Result retrieved from www.spec.org on 2026-09-23.