AMD Ryzen 9 7900X3D vs AMD Ryzen 9 9900X3D
77.8Single-core—
75.2Multi-core86.2
94.4Gamingspec-based93.8
1 spec wins — AMD Ryzen 9 7900X3D5 spec wins — AMD Ryzen 9 9900X3D
InnoReviews verdict
No overall winner yet: AMD Ryzen 9 9900X3D lacks the published benchmark results an Inno Score requires, so there is no Inno Score to compare — we don't rank chips on their spec sheet alone. The spec table below still shows every difference we track.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 7900X3D
No decisive spec advantages — this side competes on price and preference.
Reasons to pick the AMD Ryzen 9 9900X3D
- Stronger multi-core score: 86 vs 75
- 100% higher Max memory: 256 GB vs 128 GB
- 20% lower process: 4 nm vs 5 nm
- 12% higher PassMark: 56,050 vs 50,200
- Has Unlocked multiplier — the other doesn't
General
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| Announced | 2023 | 2025 |
| Socket | AM5 | AM5 |
| Process | 5 nm | 4 nm+20% |
| Base TDP | 120 W | 120 W |
| Max turbo power | 162 W | — |
| Unlocked multiplier | No | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 24 | 24 |
| Base clock | 4.4 GHz | 4.4 GHz |
| Boost clock | 5.6 GHz+2% | 5.5 GHz |
| L2 cache | 12 MB | 12 MB |
| L3 cache | 128 MB | 128 MB |
Integrated GPU
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| iGPU | AMD Radeon Graphics | AMD Radeon Graphics (2 CU RDNA 2) |
| iGPU clock | 2,200 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| Memory support | DDR5-5200 | DDR5-5600 |
| Max memory | 128 GB | 256 GB+100% |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| PCIe version | 5 | 5 |
| CPU PCIe lanes | 28 | 28 |
Benchmarks
| Spec | AMD Ryzen 9 7900X3D | AMD Ryzen 9 9900X3D |
|---|---|---|
| Geekbench 6 (single) | 3,020Top 17% | — |
| Geekbench 6 (multi) | 18,128Top 20% | — |
| Cinebench R23 (single) | 1,908Top 29% | — |
| Cinebench R23 (multi) | 26,747Top 19% | — |
| PassMark | 50,200Top 17% | 56,050+12%Top 12% |
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