AMD EPYC 7773X vs AMD EPYC 7663: comparison
Comparison of AMD EPYC 7773X and AMD EPYC 7663: key differences and a full specification table.
Key differences
AMD EPYC 7773X has more cores (64 vs 56), more threads (128 vs 112), a higher base clock (2.2 GHz vs 2 GHz) and a larger L3 cache (768 MB vs 256 MB).
At the same time, AMD EPYC 7663 has a lower TDP (240 W vs 280 W).
Both processors match on: maximum clock (3.5 GHz), memory channels (8), PCIe version (4).
These are specification values: they show differences between the models but do not determine a performance winner. For a specific workload, rely on independent benchmarks.
Key specifications
| Parameter | AMD EPYC 7773X | AMD EPYC 7663 |
|---|---|---|
| Cores / threads | 64 / 128 | 56 / 112 |
| Max boost clock | 3.5 GHz | 3.5 GHz |
| L3 cache | 768 MB | 256 MB |
| TDP | 280 W | 240 W |
Full specification table
Differing values are highlighted. This is not a better/worse rating: numbers from different architectures are not always comparable.
| Parameter | AMD EPYC 7773X | AMD EPYC 7663 |
|---|---|---|
| General | ||
| Segment | Server | Server |
| Product line | AMD EPYC 7003 Series with AMD 3D V-Cache | AMD EPYC 7003 Series |
| Product family | AMD EPYC | AMD EPYC |
| Launch date | 03/22/2021 | 03/15/2021 |
| Recommended customer price | 8.8 USD | 6.366 USD |
| Regional availability | Global, China, NA, EMEA, APJ, LATAM | — |
| Target workloads | Cache-sensitive scale-up/out, CFD, FEA Solvers | Analytics, App dev/test, CAE/CFD/FEA, ERM/SCM/CRM apps, High capacity data mgmt (NR/RDBMS), VDI, VM Density |
| Consumer oriented | No | — |
| CPU | ||
| Cores | 64 | 56 |
| Threads | 128 | 112 |
| Base clock | 2.2 GHz | 2 GHz |
| Max boost clock | 3.5 GHz | 3.5 GHz |
| L3 cache | 768 MB | 256 MB |
| TDP | 280 W | 240 W |
| Configurable TDP | 225–280 W | 225–240 W |
| Memory | ||
| Memory types | DDR4 | DDR4 |
| Memory channels | 8 | 8 |
| Max memory speed | 3.2 GHz | 3.2 GHz |
| Max memory bandwidth | 204.8 GB/s | 204.8 GB/s |
| Graphics | ||
| Has integrated graphics | No | No |
| I/O and interfaces | ||
| PCI Express revision | 4 | 4 |
| Package and thermal | ||
| Sockets supported | SP3 | SP3 |
| Max CPU configuration | 2 | 2 |
| Security and virtualization | ||
| Supported technologies | AMD Infinity Guard, AMD Infinity Architecture | AMD Infinity Guard, AMD Infinity Architecture |
| AMD PRO technologies | Yes | — |
| Identifiers | ||
| Product ID (OEM) | 100-000000504 | 100-000000318 |