Intel · Xeon Gold · 2018 · LGA3647
The Intel Xeon Gold 6138P is a server processor with 20 cores, released in 2018 at an MSRP of $4,937. It is part of the Xeon Gold lineup, using the Xeon Scalable platform, and fits the LGA3647 socket. Internally, it is built on the "Skylake-SP" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 40 threads for improved parallelism. The Xeon Gold 6138P has a base clock of 2 GHz and can boost up to 3.7 GHz depending on workload and thermal headroom. Intel manufactures the "Skylake-SP" silicon on a 14nm process node. This processor supports DDR4 memory across 6 channels, up to 768GB total, with ECC support standard for data integrity in server workloads. It supports both single-socket (1P) and dual-socket (2P) configurations, with 48 lanes of PCIe 3.0 available for storage, networking and accelerators. With a TDP of 195W, the Xeon Gold 6138P runs hot and requires a capable cooling setup. The cache hierarchy consists of 64KB/core of L1, 1MB/core of L2, and 27.5MB of L3 cache.
1st-generation Xeon Scalable (Skylake-SP) Gold part with 20 cores at 2.0GHz base / 3.7GHz turbo and 27.5MB L3 in a 195W envelope, launched 2018. Gold 6100-series parts get two AVX-512 FMA units per core, DDR4-2666 support and three UPI links for four-socket systems. The P suffix denotes a variant with an integrated FPGA on the package, reflected in its much higher TDP.
| Brand | Intel |
|---|---|
| Family | Xeon Gold |
| Series | Xeon Scalable |
| Architecture | Skylake-SP |
| Codename | Skylake-SP |
| Launch year | 2018 |
| Cores | 20 |
| Threads | 40 |
| Base clock | 2 GHz |
| Boost clock | 3.7 GHz |
| L1 cache | 64KB/core |
| L2 cache | 1MB/core |
| L3 cache | 27.5MB |
| TDP | 195W |
| Socket | LGA3647 |
| Process | 14nm |
| Memory type | DDR4 |
| Memory channels | 6 |
| Max memory | 768GB |
| PCIe lanes | 48 (PCIe 3.0) |
| ECC memory | Yes |
| Socket scalability | 1P and 2P |
| Launch MSRP | $4,937 |
| OEM / tray part number | CM8067303824101 |