AMD · EPYC 7003 · 2021 · SP3
The AMD EPYC 7663 is a server processor with 56 cores, released in 2021 at an MSRP of $6,366. It is part of the EPYC 7003 lineup, using the EPYC 7003 platform, and fits the SP3 socket. Internally, it is built on the "Zen 3" architecture. Thanks to AMD Simultaneous Multi-Threading (SMT), each core can handle two instruction streams simultaneously, yielding a total of 112 threads for improved parallelism. The EPYC 7663 has a base clock of 2 GHz and can boost up to 3.5 GHz depending on workload and thermal headroom. AMD manufactures the "Zen 3" silicon on a TSMC 7nm process node. This processor supports DDR4 memory across 8 channels, up to 4TB total, with ECC support standard for data integrity in server workloads. It supports both single-socket (1P) and dual-socket (2P) configurations, with 128 lanes of PCIe 4.0 available for storage, networking and accelerators. With a TDP of 240W, the EPYC 7663 runs hot and requires a capable cooling setup. The cache hierarchy consists of 32KB/core of L1, 512KB/core of L2, and 256MB of L3 cache — a substantial cache pool well suited to memory-bound enterprise and virtualization workloads.
56-core Milan flagship-adjacent part with full dual-socket support.
| Brand | AMD |
|---|---|
| Family | EPYC 7003 |
| Series | EPYC 7003 |
| Architecture | Zen 3 |
| Codename | Milan |
| Launch year | 2021 |
| Cores | 56 |
| Threads | 112 |
| Base clock | 2 GHz |
| Boost clock | 3.5 GHz |
| L1 cache | 32KB/core |
| L2 cache | 512KB/core |
| L3 cache | 256MB |
| TDP | 240W |
| Socket | SP3 |
| Process | TSMC 7nm |
| Memory type | DDR4 |
| Memory channels | 8 |
| Max memory | 4TB |
| PCIe lanes | 128 (PCIe 4.0) |
| ECC memory | Yes |
| Socket scalability | 1P and 2P |
| Launch MSRP | $6,366 |
| OEM / tray part number | 100-000000318 |