Intel · 2026
Intel Xeon 638
The Intel Xeon 638 is a server processor released in 2026, featuring 16 P-cores and 32 threads based on the Granite Rapids microarchitecture.
The Intel Xeon 638 is a server-grade processor built on the Granite Rapids microarchitecture and manufactured on a 3 nm process. It has 16 performance cores (P-cores) with no efficiency cores, supporting 32 threads via Hyper-Threading. The base clock is 3.2 GHz with a boost clock of 4.8 GHz, and it includes 72 MB of L3 cache. The processor has a TDP of 180 W with a maximum turbo power of 216 W. It supports DDR5 memory at 6400 MT/s across four memory channels and includes ECC memory support. The Xeon 638 provides 80 PCIe 5.0 lanes and is compatible with the FCLGA4710 socket. It supports instruction sets including 64-bit, Intel SSE4.1/4.2, Intel AMX, Intel AVX2, and Intel AVX-512. The processor was released on January 1, 2026, with a launch MSRP of 989 USD.
Specifications
| Microarchitecture unverified | Granite Rapids |
|---|---|
| Cores | 16 |
| P-cores | 16 |
| E-cores | 0 |
| Threads | 32 |
| Base clock | 3.2 GHz |
| Boost clock | 4.8 GHz |
| L3 cache | 72 MB |
| Process node | 3 nm |
| TDP / base power | 180 W |
| Max turbo power | 216 W |
| Socket | FCLGA4710 |
| Memory support | DDR5(6400MT/s) |
| Memory channels | 4 |
| ECC memory support | Yes |
| PCIe lanes (CPU) | 80 |
| PCIe version | 5.0 |
| Instruction sets | 64-bit, Intel SSE4.1, Intel AMX, Intel SSE4.2, Intel AVX2, Intel AVX-512 |
| Release date | 2026-01-01 |
| Release year | 2026 |
| Launch MSRP | 989 USD |