AMD Ryzen 9 7900X vs AMD Ryzen 9 9900X3D
77.4Single-core—
78.5Multi-core86.2
84.6Gamingspec-based93.8
2 spec wins — AMD Ryzen 9 7900X6 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 7900X
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 79
- 100% higher L3 cache: 128 MB vs 64 MB
- 100% higher Max memory: 256 GB vs 128 GB
- 29% lower Base TDP: 120 W vs 170 W
- 20% lower process: 4 nm vs 5 nm
General
| Spec | AMD Ryzen 9 7900X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Announced | 2022 | 2025 |
| Socket | AM5 | AM5 |
| Process | 5 nm | 4 nm+20% |
| Base TDP | 170 W | 120 W+29% |
| Max turbo power | 230 W | — |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | AMD Ryzen 9 7900X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 24 | 24 |
| Base clock | 4.7 GHz+7% | 4.4 GHz |
| Boost clock | 5.6 GHz+2% | 5.5 GHz |
| L2 cache | 12 MB | 12 MB |
| L3 cache | 64 MB | 128 MB+100% |
Integrated GPU
| Spec | AMD Ryzen 9 7900X | AMD Ryzen 9 9900X3D |
|---|---|---|
| iGPU | AMD Radeon Graphics (2 CU RDNA 2) | AMD Radeon Graphics (2 CU RDNA 2) |
| iGPU clock | 2,200 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 9 7900X | 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 7900X | AMD Ryzen 9 9900X3D |
|---|---|---|
| PCIe version | 5 | 5 |
| CPU PCIe lanes | 28 | 28 |
Benchmarks
| Spec | AMD Ryzen 9 7900X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Geekbench 6 (single) | 2,880Top 27% | — |
| Geekbench 6 (multi) | 18,500Top 18% | — |
| Cinebench R23 (single) | 2,000Top 23% | — |
| Cinebench R23 (multi) | 29,000Top 17% | — |
| PassMark | 52,500Top 14% | 56,050+7%Top 12% |
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