Intel · Xeon W · 2021 · BGA1787
The Intel Xeon W-11855M is a server processor with 6 cores, released in 2021. It is part of the Xeon W lineup, using the Xeon W platform, and fits the BGA1787 socket. Internally, it is built on the "Tiger Lake-H" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 12 threads for improved parallelism. The Xeon W-11855M has a base clock of 3.2 GHz and can boost up to 4.9 GHz depending on workload and thermal headroom. Intel manufactures the "Tiger Lake-H" silicon on a 10nm SuperFin process node. This processor supports DDR4 memory across 2 channels, up to 128GB total, with ECC support standard for data integrity in server workloads. It supports single-socket (1P) configurations, with 20 lanes of PCIe 4.0 available for storage, networking and accelerators. With a TDP of 35W, the Xeon W-11855M is an efficient chip suitable for modest cooling solutions. The cache hierarchy consists of no dedicated of L1, no dedicated of L2, and 18MB of L3 cache.
Tiger Lake-H generation Intel server/workstation processor.
| Brand | Intel |
|---|---|
| Family | Xeon W |
| Series | Xeon W |
| Architecture | Tiger Lake-H |
| Codename | Tiger Lake-H |
| Launch year | 2021 |
| Cores | 6 |
| Threads | 12 |
| Base clock | 3.2 GHz |
| Boost clock | 4.9 GHz |
| L3 cache | 18MB |
| TDP | 35W |
| Socket | BGA1787 |
| Process | 10nm SuperFin |
| Memory type | DDR4 |
| Memory channels | 2 |
| Max memory | 128GB |
| PCIe lanes | 20 (PCIe 4.0) |
| ECC memory | Yes |
| Socket scalability | 1P only |
| OEM / tray part number | FH8069004466609 |