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Intel Xeon 6979P vs Intel Xeon Bronze 3408U: Comparison
Intel Xeon 6979P and Intel Xeon Bronze 3408U separate most on l3 cache: Intel Xeon 6979P at 240, Intel Xeon Bronze 3408U at 22.5, 91% in favour of Intel Xeon 6979P. Memory Channels splits them by another 33%, again favouring Intel Xeon 6979P. They match on 8 other specifications, including form factor, market segment and socket. In SPECrate® 2017 Integer (base), 1-chip the Intel Xeon 6979P scores 1,150 against 43.7 for the Intel Xeon Bronze 3408U, a lead of 96%.
Specs
| Specification |  |  |
|---|---|---|
| Form Factor | Server & Enthusiast | Server & Enthusiast |
| Model Number | 6979P | Bronze 3408U |
| Codename | Granite Rapids | Sapphire Rapids |
| Release Year | 2024 | 2023 |
| TDP | 440 W | 125 W |
| Market Segment | Server | Server |
| Socket | Other | Other |
| Socket Status | Current | Mature |
| Process Node | 3 | 10 |
| Performance Cores | 120 | 8 |
| Efficiency Cores | 0 | 0 |
| SMT Enabled | Yes | No |
| P-Core Base Clock | 2.1 | 1.8 |
| P-Core Boost Clock | 3.5 | 1.9 |
| L3 Cache | 240 | 22.5-91% |
| Base Power | 440 | 125 |
| Memory Type | DDR5 | DDR5 |
| Memory Channels | 12 | 8-33% |
| Max Memory Capacity | 1536 | 4096 |
| ECC Support | Yes | Yes |
| Integrated Graphics | No | No |
| Copilot Plus Certified | No | No |
| PCIe Generation | PCIe 5.0 | PCIe 4.0 |
| Cores | 120 | 8 |
| Threads | 240 | 8 |
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 6979P
9.4 / 10 Expert Rating
The Intel Xeon 6979P is the near-flagship runner-up in Intel's Xeon 6 stack, trading eight cores for a slightly higher clock and lower TDP than the 6980P.
Intel Xeon Bronze 3408U
7.5 / 10 Expert Rating
The Intel Xeon Bronze 3408U covers the entry tier of Intel's data center lineup, adequate for light server duty but not for demanding workloads.