AMD Ryzen 7 2700X vs AMD Ryzen 9 3900X
28.4Single-core37.6
37.2Multi-core54.2
43Gamingspec-based78.3
0 spec wins — AMD Ryzen 7 2700X16 spec wins — AMD Ryzen 9 3900X
InnoReviews verdict
AMD Ryzen 9 3900X wins this desktop processor face-off, 55.3 to 36, pulling ahead mainly in multi-core (+17) and single-core (+9). AMD Ryzen 7 2700X 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 2700X
- Lower launch price: $329 vs $499
Reasons to pick the AMD Ryzen 9 3900X
- Stronger single-core score: 38 vs 28
- Stronger multi-core score: 54 vs 37
- 300% higher L3 cache: 64 MB vs 16 MB
- 100% higher Max memory: 128 GB vs 64 GB
- 85% higher PassMark: 32,600 vs 17,600
General
| Spec | AMD Ryzen 7 2700X | AMD Ryzen 9 3900X |
|---|---|---|
| Announced | 2018 | 2019 |
| Socket | AM4 | AM4 |
| Process | 12 nm | 7 nm+42% |
| Base TDP | 105 W | 105 W |
| Max turbo power | 142 W | 142 W |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | Yes |
Cores & Clocks
| Spec | AMD Ryzen 7 2700X | AMD Ryzen 9 3900X |
|---|---|---|
| Cores | 8 | 12+50% |
| Performance cores | 8 | 12+50% |
| Efficiency cores | 0 | 0 |
| Threads | 16 | 24+50% |
| Base clock | 3.7 GHz | 3.8 GHz+3% |
| Boost clock | 4.3 GHz | 4.6 GHz+7% |
| L2 cache | 4 MB | 6 MB+50% |
| L3 cache | 16 MB | 64 MB+300% |
Memory
| Spec | AMD Ryzen 7 2700X | AMD Ryzen 9 3900X |
|---|---|---|
| Memory support | DDR4-2933 | DDR4-3200 |
| Max memory | 64 GB | 128 GB+100% |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 7 2700X | AMD Ryzen 9 3900X |
|---|---|---|
| PCIe version | 3 | 4+33% |
| CPU PCIe lanes | 24 | 24 |
Benchmarks
| Spec | AMD Ryzen 7 2700X | AMD Ryzen 9 3900X |
|---|---|---|
| Geekbench 6 (single) | 1,255Bottom 17% | 1,540+23%Bottom 32% |
| Geekbench 6 (multi) | 6,600Bottom 32% | 11,000+67%Top 47% |
| Cinebench R23 (single) | 1,120Bottom 19% | 1,300+16%Bottom 33% |
| Cinebench R23 (multi) | 10,500Bottom 39% | 18,300+74%Top 32% |
| PassMark | 17,600Bottom 30% | 32,600+85%Top 37% |
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