AMD Ryzen 9 3950X vs AMD Ryzen 9 9900X3D
38.6Single-core—
64.6Multi-core86.2
79Gamingspec-based93.8
4 spec wins — AMD Ryzen 9 3950X10 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 3950X
- 33% higher cores: 16 vs 12
- 33% higher Performance cores: 16 vs 12
- 33% higher threads: 32 vs 24
- 12% lower Base TDP: 105 W vs 120 W
Reasons to pick the AMD Ryzen 9 9900X3D
- Stronger multi-core score: 86 vs 65
- 100% higher L3 cache: 128 MB vs 64 MB
- 100% higher Max memory: 256 GB vs 128 GB
- 50% higher L2 cache: 12 MB vs 8 MB
- 44% higher PassMark: 56,050 vs 39,000
- Lower launch price: $599 vs $749
General
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Announced | 2019 | 2025 |
| Socket | AM4 | AM5 |
| Process | 7 nm | 4 nm+43% |
| Base TDP | 105 W+12% | 120 W |
| Max turbo power | 142 W | — |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | No |
Cores & Clocks
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Cores | 16+33% | 12 |
| Performance cores | 16+33% | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 32+33% | 24 |
| Base clock | 3.5 GHz | 4.4 GHz+26% |
| Boost clock | 4.7 GHz | 5.5 GHz+17% |
| L2 cache | 8 MB | 12 MB+50% |
| L3 cache | 64 MB | 128 MB+100% |
Integrated GPU
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| iGPU | — | AMD Radeon Graphics (2 CU RDNA 2) |
| iGPU clock | — | 2,200 MHz |
Memory
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Memory support | DDR4-3200 | DDR5-5600 |
| Max memory | 128 GB | 256 GB+100% |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24 | 28+17% |
Benchmarks
| Spec | AMD Ryzen 9 3950X | AMD Ryzen 9 9900X3D |
|---|---|---|
| Geekbench 6 (single) | 1,570Bottom 37% | — |
| Geekbench 6 (multi) | 13,300Top 39% | — |
| Cinebench R23 (single) | 1,320Bottom 36% | — |
| Cinebench R23 (multi) | 24,700Top 22% | — |
| PassMark | 39,000Top 27% | 56,050+44%Top 12% |
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