Intel · Xeon E5 · 2015 · LGA2011-3
The Intel Xeon E5-2678 v3 is a server processor with 12 cores, released in 2015. It is part of the Xeon E5 lineup, using the Xeon E5 platform, and fits the LGA2011-3 socket. Internally, it is built on the "Haswell-EP" architecture. Thanks to Intel Hyper-Threading, each core can handle two instruction streams simultaneously, yielding a total of 24 threads for improved parallelism. The Xeon E5-2678 v3 has a base clock of 2.5 GHz and can boost up to 3.3 GHz depending on workload and thermal headroom. Intel manufactures the "Haswell-EP" silicon on a 22nm process node. This processor supports DDR4 memory across 4 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 40 lanes of PCIe 3.0 available for storage, networking and accelerators. With a TDP of 120W, the Xeon E5-2678 v3 sits in a typical power envelope for a modern desktop CPU. The cache hierarchy consists of no dedicated of L1, no dedicated of L2, and 30MB of L3 cache.
Xeon E5 v3 — introduced DDR4 memory support to the Xeon E5 line for the first time.
| Brand | Intel |
|---|---|
| Family | Xeon E5 |
| Series | Xeon E5 |
| Architecture | Haswell-EP |
| Codename | Haswell-EP |
| Launch year | 2015 |
| Cores | 12 |
| Threads | 24 |
| Base clock | 2.5 GHz |
| Boost clock | 3.3 GHz |
| L3 cache | 30MB |
| TDP | 120W |
| Socket | LGA2011-3 |
| Process | 22nm |
| Memory type | DDR4 |
| Memory channels | 4 |
| Max memory | 768GB |
| PCIe lanes | 40 (PCIe 3.0) |
| ECC memory | Yes |
| Socket scalability | 1P and 2P |