AMD Ryzen 9 3900X vs Intel Core i7-12700K
37.6Single-core69.4
54.2Multi-core61.5
78.3Gamingspec-based58.1
8 spec wins — AMD Ryzen 9 3900X11 spec wins — Intel Core i7-12700K
InnoReviews verdict
Intel Core i7-12700K wins this desktop processor face-off, 63 to 55.3, pulling ahead mainly in single-core (+32) and multi-core (+7). 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
- 156% higher L3 cache: 64 MB vs 25 MB
- 50% higher Performance cores: 12 vs 8
- 30% lower process: 7 nm vs 10 nm
- 20% higher threads: 24 vs 20
- 20% higher CPU PCIe lanes: 24 vs 20
Reasons to pick the Intel Core i7-12700K
- Stronger single-core score: 69 vs 38
- Stronger multi-core score: 62 vs 54
- 100% higher L2 cache: 12 MB vs 6 MB
- 62% higher Geekbench 6 (single): 2,500 vs 1,540
- 50% higher Cinebench R23 (single): 1,950 vs 1,300
- Lower launch price: $409 vs $499
General
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| Announced | 2019 | 2021 |
| Socket | AM4 | LGA1700 |
| Process | 7 nm+30% | 10 nm |
| Base TDP | 105 W+16% | 125 W |
| Max turbo power | 142 W | 190 W+34% |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| Cores | 12 | 12 |
| Performance cores | 12+50% | 8 |
| Efficiency cores | 0 | 4 |
| Threads | 24+20% | 20 |
| Base clock | 3.8 GHz+6% | 3.6 GHz |
| Boost clock | 4.6 GHz | 5 GHz+9% |
| L2 cache | 6 MB | 12 MB+100% |
| L3 cache | 64 MB+156% | 25 MB |
Integrated GPU
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| iGPU | — | Intel UHD Graphics 770 |
| iGPU clock | — | 1,500 MHz |
Memory
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| Memory support | DDR4-3200 | DDR5-4800 / DDR4-3200 |
| Max memory | 128 GB | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24+20% | 20 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Intel Core i7-12700K |
|---|---|---|
| Geekbench 6 (single) | 1,540Bottom 32% | 2,500+62%Top 40% |
| Geekbench 6 (multi) | 11,000Top 47% | 14,300+30%Top 36% |
| Cinebench R23 (single) | 1,300Bottom 33% | 1,950+50%Top 30% |
| Cinebench R23 (multi) | 18,300Top 32% | 22,400+22%Top 26% |
| PassMark | 32,600Top 37% | 34,500+6%Top 34% |
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