Intel · Xeon E7 · 2015 · LGA2011-1
The Intel Xeon E7-8891 v3 is a server processor with 10 cores, released in 2015. It is part of the Xeon E7 lineup, using the Xeon E7 platform, and fits the LGA2011-1 socket. Internally, it is built on the "Haswell-EX" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 20 threads for improved parallelism. The Xeon E7-8891 v3 has a base clock of 2.8 GHz and can boost up to 3.5 GHz depending on workload and thermal headroom. Intel manufactures the "Haswell-EX" silicon on a 22nm process node. This processor supports DDR3 memory across 4 channels, up to 6TB total, with ECC support standard for data integrity in server workloads. It supports both single-socket (1P) and dual-socket (2P) configurations, with 32 lanes of PCIe 3.0 available for storage, networking and accelerators. With a TDP of 165W, the Xeon E7-8891 v3 runs hot and requires a capable cooling setup. The cache hierarchy consists of no dedicated of L1, no dedicated of L2, and 45MB of L3 cache.
Xeon E7 v3 — flagship 4-socket+ Haswell generation for large scale-up servers.
| Brand | Intel |
|---|---|
| Family | Xeon E7 |
| Series | Xeon E7 |
| Architecture | Haswell-EX |
| Codename | Haswell-EX |
| Launch year | 2015 |
| Cores | 10 |
| Threads | 20 |
| Base clock | 2.8 GHz |
| Boost clock | 3.5 GHz |
| L3 cache | 45MB |
| TDP | 165W |
| Socket | LGA2011-1 |
| Process | 22nm |
| Memory type | DDR3 |
| Memory channels | 4 |
| Max memory | 6TB |
| PCIe lanes | 32 (PCIe 3.0) |
| ECC memory | Yes |
| Socket scalability | 1P and 2P |
| OEM / tray part number | CM8064501552202 |