AMD Ryzen 9 7900X3D vs AMD Ryzen 9 PRO 9945
77.8Single-core86.4
75.2Multi-core76.9
94.4Gamingspec-based83.3
4 spec wins — AMD Ryzen 9 7900X3D6 spec wins — AMD Ryzen 9 PRO 9945
InnoReviews verdict
This one is close to a dead heat: AMD Ryzen 9 7900X3D scores 80.8 against 81.4 for AMD Ryzen 9 PRO 9945. Pick by the categories that matter to you — AMD Ryzen 9 PRO 9945 edges ahead in single-core and multi-core, or by price.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 7900X3D
- 100% higher L3 cache: 128 MB vs 64 MB
- 29% higher Base clock: 4.4 GHz vs 3.4 GHz
Reasons to pick the AMD Ryzen 9 PRO 9945
- Stronger single-core score: 86 vs 78
- 50% higher Max memory: 192 GB vs 128 GB
- 46% lower Base TDP: 65 W vs 120 W
- 20% lower process: 4 nm vs 5 nm
- 12% higher PassMark (single thread): 4,619 vs 4,118
General
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| Announced | 2023 | 2025 |
| Socket | AM5 | AM5 |
| Process | 5 nm | 4 nm+20% |
| Base TDP | 120 W | 65 W+46% |
| Max turbo power | 162 W | — |
| Unlocked multiplier | No | No |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 24 | 24 |
| Base clock | 4.4 GHz+29% | 3.4 GHz |
| Boost clock | 5.6 GHz+4% | 5.4 GHz |
| L2 cache | 12 MB | 12 MB |
| L3 cache | 128 MB+100% | 64 MB |
Integrated GPU
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| iGPU | AMD Radeon Graphics | AMD Radeon Graphics (2 CU) |
| iGPU clock | 2,200 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| Memory support | DDR5-5200 | DDR5-5600 |
| Max memory | 128 GB | 192 GB+50% |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| PCIe version | 5 | 5 |
| CPU PCIe lanes | 28 | 28 |
Benchmarks
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 PRO 9945 |
|---|---|---|
| Geekbench 6 (single) | 3,020Top 21% | — |
| Geekbench 6 (multi) | 18,128Top 22% | — |
| Cinebench R23 (single) | 1,908Top 32% | — |
| Cinebench R23 (multi) | 26,747Top 21% | — |
| PassMark | 50,198+3%Top 13% | 48,664Top 15% |
| PassMark (single thread) | 4,118Top 25% | 4,619+12%Top 10% |
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