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Intel Xeon 6747P vs Intel Xeon 6781P: Comparison
Intel Xeon 6747P and Intel Xeon 6781P differ on performance cores: Intel Xeon 6747P at 48, Intel Xeon 6781P at 80, which puts Intel Xeon 6781P ahead on that measure. They match on 19 other specifications, including product line, codename and release year. In SPECrate® 2017 Integer (base), 1-chip the Intel Xeon 6781P scores 775 against 547 for the Intel Xeon 6747P, a lead of 29%.
Specs
| Specification |  | |
|---|---|---|
| Product Line | Xeon | Xeon |
| Codename | Granite Rapids | Granite Rapids |
| Release Year | 2024 | 2024 |
| Market Segment | Server | Server |
| Socket | Other | Other |
| Socket Status | Current | Current |
| Process Node | 3 | 3 |
| Performance Cores | 48 | 80 |
| Efficiency Cores | 0 | 0 |
| SMT Enabled | Yes | Yes |
| P-Core Base Clock | 2.7 | 2.0 |
| P-Core Boost Clock | 4.1 | 3.4 |
| Unlocked Multiplier | No | No |
| L3 Cache | 96 MB-40% | 160 |
| Base Power | 270 | 400 |
| Memory Type | DDR5 | DDR5 |
| Memory Channels | 8 | 8 |
| Max Memory Capacity | 2048 | 2048 |
| ECC Support | Yes | Yes |
| Integrated Graphics | No | No |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Architecture | Granite Rapids | Granite Rapids |
| Socket Support | 1S/2S | 1S/2S |
| Max Memory | 2048 GB (8-channel DDR5-6400) | 2048 GB (8-channel DDR5-6400) |
| Cores | 48 | 80 |
| Threads | 96 | 160 |
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 6747P
9 / 10 Expert Rating
The Intel Xeon 6747P is the clock-leading 48-core Granite Rapids SKU, the pick when per-core speed matters as much as core count at this tier.
Intel Xeon 6781P
8.9 / 10 Expert Rating
The Intel Xeon 6781P is the unique 80-core step in Intel's LGA 4710 Xeon 6 stack, bridging the 64-core and 86-core tiers.