AMD Ryzen 9 3900X vs AMD Ryzen 9 5900X
37.6Single-core54.4
54.2Multi-core62.1
78.3Gaming79.6
2 spec wins — AMD Ryzen 9 3900X7 spec wins — AMD Ryzen 9 5900X
InnoReviews verdict
AMD Ryzen 9 5900X wins this desktop processor face-off, 64.1 to 55.3, pulling ahead mainly in Single-core (+17) and Multi-core (+8). 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 9 3900X
- Has Cooler included — the other doesn't
Reasons to pick the AMD Ryzen 9 5900X
- Stronger Single-core score: 54 vs 38
- Stronger Multi-core score: 62 vs 54
- 36% higher Geekbench 6 (single): 2,100 vs 1,540
- 23% higher Geekbench 6 (multi): 13,500 vs 11,000
- 23% higher Cinebench R23 (single): 1,600 vs 1,300
General
| Spec | AMD Ryzen 9 3900X | AMD Ryzen 9 5900X |
|---|---|---|
| Announced | 2019 | 2020 |
| Socket | AM4 | AM4 |
| Process | 7 nm | 7 nm |
| Base TDP | 105 W | 105 W |
| Max turbo power | 142 W | 142 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | AMD Ryzen 9 5900X |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 0 |
| Threads | 24 | 24 |
| Base clock | 3.8 GHz+3% | 3.7 GHz |
| Boost clock | 4.6 GHz | 4.8 GHz+4% |
| L2 cache | 6 MB | 6 MB |
| L3 cache | 64 MB | 64 MB |
Memory
| Spec | AMD Ryzen 9 3900X | AMD Ryzen 9 5900X |
|---|---|---|
| Memory support | DDR4-3200 | DDR4-3200 |
| Max memory | 128 GB | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 3900X | AMD Ryzen 9 5900X |
|---|---|---|
| PCIe version | 4 | 4 |
| CPU PCIe lanes | 24 | 24 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | AMD Ryzen 9 5900X |
|---|---|---|
| Geekbench 6 (single) | 1,540Top 63% | 2,100+36%Top 32% |
| Geekbench 6 (multi) | 11,000Top 35% | 13,500+23%Top 24% |
| Cinebench R23 (single) | 1,300Top 59% | 1,600+23%Top 39% |
| Cinebench R23 (multi) | 18,300Top 24% | 21,700+19%Top 20% |
| PassMark | 32,600Top 26% | 39,000+20%Top 16% |
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