AMD Ryzen 9 7900 vs AMD Ryzen 9 9900X3D
78.6Single-core—
70.5Multi-core86.2
83.3Gamingspec-based93.8
1 spec wins — AMD Ryzen 9 79007 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 7900
- 46% lower Base TDP: 65 W vs 120 W
- Lower launch price: $429 vs $599
Reasons to pick the AMD Ryzen 9 9900X3D
- Stronger multi-core score: 86 vs 71
- 100% higher L3 cache: 128 MB vs 64 MB
- 100% higher Max memory: 256 GB vs 128 GB
- 20% lower process: 4 nm vs 5 nm
- 19% higher Base clock: 4.4 GHz vs 3.7 GHz
General
| Spec | AMD Ryzen 9 7900 | AMD Ryzen 9 9900X3D |
|---|---|---|
| Announced | 2023 | 2025 |
| Socket | AM5 | AM5 |
| Process | 5 nm | 4 nm+20% |
| Base TDP | 65 W+46% | 120 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | AMD Ryzen 9 7900 | AMD Ryzen 9 9900X3D |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 24 | 24 |
| Base clock | 3.7 GHz | 4.4 GHz+19% |
| Boost clock | 5.4 GHz | 5.5 GHz+2% |
| L2 cache | 12 MB | 12 MB |
| L3 cache | 64 MB | 128 MB+100% |
Integrated GPU
| Spec | AMD Ryzen 9 7900 | 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 7900 | 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 7900 | AMD Ryzen 9 9900X3D |
|---|---|---|
| PCIe version | 5 | 5 |
| CPU PCIe lanes | 28 | 28 |
Benchmarks
| Spec | AMD Ryzen 9 7900 | AMD Ryzen 9 9900X3D |
|---|---|---|
| Geekbench 6 (single) | 2,990Top 19% | — |
| Geekbench 6 (multi) | 15,725Top 28% | — |
| Cinebench R23 (single) | 1,966Top 26% | — |
| Cinebench R23 (multi) | 24,776Top 21% | — |
| PassMark | 48,013Top 20% | 56,050+17%Top 12% |
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