AMD Ryzen 9 3900 vs AMD Ryzen 9 3900X
43.1Single-core37.6
50.6Multi-core54.2
76.5Gamingspec-based78.3
2 spec wins — AMD Ryzen 9 39005 spec wins — AMD Ryzen 9 3900X
InnoReviews verdict
This one is close to a dead heat: AMD Ryzen 9 3900 scores 54.8 against 55.2 for AMD Ryzen 9 3900X. Pick by the categories that matter to you — AMD Ryzen 9 3900X edges ahead in multi-core, or by price.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 3900
- Stronger single-core score: 43 vs 38
- 38% lower Base TDP: 65 W vs 105 W
- 13% higher Geekbench 6 (single): 1,735 vs 1,540
Reasons to pick the AMD Ryzen 9 3900X
- Stronger multi-core score: 54 vs 51
- 23% higher Base clock: 3.8 GHz vs 3.1 GHz
- 16% higher Geekbench 6 (multi): 11,000 vs 9,504
General
| Spec | AMD Ryzen 9 3900 | AMD Ryzen 9 3900X |
|---|---|---|
| Announced | 2019 | 2019 |
| Socket | AM4 | AM4 |
| Process | 7 nm | 7 nm |
| Base TDP | 65 W+38% | 105 W |
| Max turbo power | — | 142 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | — | Yes |
Cores & Clocks
| Spec | AMD Ryzen 9 3900 | AMD Ryzen 9 3900X |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | — | 12 |
| Efficiency cores | — | 0 |
| Threads | 24 | 24 |
| Base clock | 3.1 GHz | 3.8 GHz+23% |
| Boost clock | 4.3 GHz | 4.6 GHz+7% |
| L2 cache | 6 MB | 6 MB |
| L3 cache | 64 MB | 64 MB |
Memory
| Spec | AMD Ryzen 9 3900 | AMD Ryzen 9 3900X |
|---|---|---|
| Memory support | DDR4-3200 | DDR4-3200 |
| Max memory | — | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 3900 | AMD Ryzen 9 3900X |
|---|---|---|
| PCIe version | 4 | 4 |
| CPU PCIe lanes | — | 24 |
Benchmarks
| Spec | AMD Ryzen 9 3900 | AMD Ryzen 9 3900X |
|---|---|---|
| Geekbench 6 (single) | 1,735+13%Bottom 43% | 1,540Bottom 33% |
| Geekbench 6 (multi) | 9,504Bottom 50% | 11,000+16%Top 46% |
| Cinebench R23 (single) | — | 1,300Bottom 30% |
| Cinebench R23 (multi) | — | 18,300Top 36% |
| PassMark | 30,545Top 35% | 32,465+6%Top 31% |
| PassMark (single thread) | 2,605Bottom 24% | 2,702+4%Bottom 29% |
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