AMD Ryzen 7 9850X3D vs AMD Ryzen 9 3900X
86.9Single-core37.6
65.6Multi-core54.2
94.4Gamingspec-based78.3
12 spec wins — AMD Ryzen 7 9850X3D5 spec wins — AMD Ryzen 9 3900X
InnoReviews verdict
AMD Ryzen 7 9850X3D wins this desktop processor face-off, 79.2 to 55.3, pulling ahead mainly in single-core (+49) and multi-core (+11). AMD Ryzen 9 3900X still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 7 9850X3D
- Stronger single-core score: 87 vs 38
- Stronger multi-core score: 66 vs 54
- 100% higher Max memory: 256 GB vs 128 GB
- 71% higher Cinebench R23 (single): 2,221 vs 1,300
- 50% higher L3 cache: 96 MB vs 64 MB
Reasons to pick the AMD Ryzen 9 3900X
- 50% higher cores: 12 vs 8
- 50% higher Performance cores: 12 vs 8
- 50% higher threads: 24 vs 16
- 12% lower Base TDP: 105 W vs 120 W
- Has Cooler included — the other doesn't
General
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| Announced | 2026 | 2019 |
| Socket | AM5 | AM4 |
| Process | 4 nm+43% | 7 nm |
| Base TDP | 120 W | 105 W+12% |
| Max turbo power | 162 W+14% | 142 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| Cores | 8 | 12+50% |
| Performance cores | 8 | 12+50% |
| Efficiency cores | 0 | 0 |
| Threads | 16 | 24+50% |
| Base clock | 4.7 GHz+24% | 3.8 GHz |
| Boost clock | 5.6 GHz+22% | 4.6 GHz |
| L2 cache | 8 MB+33% | 6 MB |
| L3 cache | 96 MB+50% | 64 MB |
Integrated GPU
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| iGPU | AMD Radeon Graphics (2 CU RDNA 2) | — |
| iGPU clock | 2,200 MHz | — |
Memory
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| Memory support | DDR5-5600 | DDR4-3200 |
| Max memory | 256 GB+100% | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| PCIe version | 5+25% | 4 |
| CPU PCIe lanes | 24 | 24 |
Benchmarks
| Spec | AMD Ryzen 7 9850X3D | AMD Ryzen 9 3900X |
|---|---|---|
| Geekbench 6 (single) | — | 1,540Bottom 33% |
| Geekbench 6 (multi) | — | 11,000Top 46% |
| Cinebench R23 (single) | 2,221+71%Top 12% | 1,300Bottom 34% |
| Cinebench R23 (multi) | 23,204+27%Top 25% | 18,300Top 31% |
| PassMark | 41,305+27%Top 24% | 32,600Top 37% |
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