AMD Ryzen 9 3900X vs Intel Core i5-12600K
37.6Single-core65.2
54.2Multi-core50.8
78.3Gamingspec-based52.1
11 spec wins — AMD Ryzen 9 3900X7 spec wins — Intel Core i5-12600K
InnoReviews verdict
This one is close to a dead heat: AMD Ryzen 9 3900X scores 55.3 against 55.4 for Intel Core i5-12600K. Pick by the categories that matter to you — Intel Core i5-12600K edges ahead in single-core, or by price.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 3900X
- Stronger multi-core score: 54 vs 51
- 220% higher L3 cache: 64 MB vs 20 MB
- 100% higher Performance cores: 12 vs 6
- 50% higher threads: 24 vs 16
- 30% lower process: 7 nm vs 10 nm
Reasons to pick the Intel Core i5-12600K
- Stronger single-core score: 65 vs 38
- 58% higher L2 cache: 10 MB vs 6 MB
- 39% higher Cinebench R23 (single): 1,809 vs 1,300
- 25% higher PCIe version: 5 vs 4
- Lower launch price: $318 vs $499
General
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12600K |
|---|---|---|
| Announced | 2019 | 2021 |
| Socket | AM4 | LGA1700 |
| Process | 7 nm+30% | 10 nm |
| Base TDP | 105 W+16% | 125 W |
| Max turbo power | 142 W | 150 W+6% |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12600K |
|---|---|---|
| Cores | 12+20% | 10 |
| Performance cores | 12+100% | 6 |
| Efficiency cores | 0 | 4 |
| Threads | 24+50% | 16 |
| Base clock | 3.8 GHz+3% | 3.7 GHz |
| Boost clock | 4.6 GHz | 4.9 GHz+7% |
| L2 cache | 6 MB | 10 MB+58% |
| L3 cache | 64 MB+220% | 20 MB |
Integrated GPU
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12600K |
|---|---|---|
| iGPU | — | Intel UHD Graphics 770 |
| iGPU clock | — | 1,450 MHz |
Memory
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12600K |
|---|---|---|
| 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 i5-12600K |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24+20% | 20 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12600K |
|---|---|---|
| Geekbench 6 (single) | 1,540Bottom 33% | — |
| Geekbench 6 (multi) | 11,000Top 46% | — |
| Cinebench R23 (single) | 1,300Bottom 34% | 1,809+39%Top 38% |
| Cinebench R23 (multi) | 18,300+8%Top 31% | 16,878Top 37% |
| PassMark | 32,600+19%Top 37% | 27,501Top 47% |
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