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Intel Xeon E-2456 vs Intel Xeon E-2478: Comparison
Intel Xeon E-2456 and Intel Xeon E-2478 separate most on l2 cache: Intel Xeon E-2456 at 12, Intel Xeon E-2478 at 16, 25% in favour of Intel Xeon E-2478. L3 Cache splits them by another 25%, again favouring Intel Xeon E-2478. They match on 22 other specifications, including form factor, codename and release year. In SPECrate® 2017 Integer (base), 1-chip the Intel Xeon E-2478 scores 100 against 79.8 for the Intel Xeon E-2456, a lead of 20%.
Specs
| Specification |  | |
|---|---|---|
| Form Factor | Desktop | Desktop |
| Model Number | E-2456 | E-2478 |
| Codename | Raptor Lake-E | Raptor Lake-E |
| Release Year | 2023 | 2023 |
| TDP | 65 W | 80 W |
| iGPU | Intel UHD Graphics P750 | Intel UHD Graphics P750 |
| Market Segment | Server | Server |
| Socket | LGA1700 | LGA1700 |
| Socket Status | Current | Current |
| Process Node | 10 | 10 |
| Performance Cores | 6 | 8 |
| Efficiency Cores | 0 | 0 |
| SMT Enabled | Yes | Yes |
| P-Core Base Clock | 3.3 | 2.8 |
| P-Core Boost Clock | 5.1 | 5.2 |
| L2 Cache | 12-25% | 16 |
| L3 Cache | 18-25% | 24 |
| Base Power | 80 | 80 |
| Max Operating Temp | 100 | 100 |
| Memory Type | DDR5 | DDR5 |
| Max Memory Speed | 4800 | 4800 |
| Memory Channels | 2 | 2 |
| Max Memory Capacity | 128 | 128 |
| ECC Support | Yes | Yes |
| Integrated Graphics | No | No |
| Copilot Plus Certified | No | No |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| PCIe Lanes | 20 | 20 |
| Launch MSRP | 375 | 556 |
| Retail Availability | Tray OEM | Tray OEM |
| Cores | 6 | 8 |
| Threads | 12 | 16 |
Benchmarks
Measured results, not specifications. Percentages are the gap to the leading product in each test.
SPECrate® 2017 Integer (base), 1-chip
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
SPECrate 2017 Integer runs ten integer workloads, including a compiler, file compression, a chess engine and route planning, with one copy per hardware thread. The score is throughput against a fixed reference machine, so it reflects multi-core server and workstation work rather than gaming. Each figure is the best result a hardware vendor published on spec.org for a one-chip system, so the server, memory and compiler behind each chip differ.
SPECrate® 2017 Floating Point (base), 1-chip
Best published 1-chip result on spec.org, retrieved 23 Sept 2026.
SPECrate 2017 Floating Point runs thirteen scientific and engineering workloads, including weather and climate models, fluid dynamics, molecular dynamics and ray tracing, with one copy per hardware thread. It rewards core count, vector units and memory bandwidth, which is why server chips with many memory channels lead it. Each figure is the best result a hardware vendor published on spec.org for a one-chip system, so the server, memory and compiler behind each chip differ.
SPEC®, SPECrate® and SPECspeed® are registered trademarks of the Standard Performance Evaluation Corporation. Copied by permission of the Standard Performance Evaluation Corporation (SPEC). Results retrieved from www.spec.org on 23 Sept 2026.
Verdict
Intel Xeon E-2456
7.8 / 10 Expert Rating
The Intel Xeon E-2456 is a capable single-socket entry server chip, best for small deployments rather than heavy multi-socket workloads.
Intel Xeon E-2478
7.8 / 10 Expert Rating
The Intel Xeon E-2478 is a capable single-socket entry server chip, best for small deployments rather than heavy multi-socket workloads.