AMD Ryzen 9 3900X vs Intel Core i5-12400F
37.6Single-core56.4
54.2Multi-core41.7
78.3Gaming46.5
13 spec wins — AMD Ryzen 9 3900X6 spec wins — Intel Core i5-12400F
InnoReviews verdict
AMD Ryzen 9 3900X wins this desktop processor face-off, 55.3 to 47.3, pulling ahead mainly in gaming (+32) and Multi-core (+13). Intel Core i5-12400F 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
- Stronger Multi-core score: 54 vs 42
- Stronger gaming score: 78 vs 47
- 256% higher L3 cache: 64 MB vs 18 MB
- 100% higher cores: 12 vs 6
- 100% higher Performance cores: 12 vs 6
Reasons to pick the Intel Core i5-12400F
- Stronger Single-core score: 56 vs 38
- 38% lower Base TDP: 65 W vs 105 W
- 36% higher Geekbench 6 (single): 2,100 vs 1,540
- 30% higher Cinebench R23 (single): 1,690 vs 1,300
- 25% higher L2 cache: 8 MB vs 6 MB
- Lower launch price: $167 vs $499
General
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12400F |
|---|---|---|
| Announced | 2019 | 2022 |
| Socket | AM4 | LGA1700 |
| Process | 7 nm+30% | 10 nm |
| Base TDP | 105 W | 65 W+38% |
| Max turbo power | 142 W+21% | 117 W |
| Unlocked multiplier | Yes | No |
| Cooler included | Yes | Yes |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12400F |
|---|---|---|
| Cores | 12+100% | 6 |
| Performance cores | 12+100% | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 24+100% | 12 |
| Base clock | 3.8 GHz+52% | 2.5 GHz |
| Boost clock | 4.6 GHz+5% | 4.4 GHz |
| L2 cache | 6 MB | 8 MB+25% |
| L3 cache | 64 MB+256% | 18 MB |
Memory
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12400F |
|---|---|---|
| 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 i5-12400F |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24+20% | 20 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Intel Core i5-12400F |
|---|---|---|
| Geekbench 6 (single) | 1,540Top 63% | 2,100+36%Top 32% |
| Geekbench 6 (multi) | 11,000+17%Top 35% | 9,400Top 43% |
| Cinebench R23 (single) | 1,300Top 59% | 1,690+30%Top 33% |
| Cinebench R23 (multi) | 18,300+54%Top 24% | 11,900Top 47% |
| PassMark | 32,600+65%Top 26% | 19,700Top 49% |
Related comparisons
AMD Ryzen 9 3900Xvs AMD Ryzen 7 5700X3DVSAMD Ryzen 9 3900Xvs AMD Ryzen 7 8700GVSAMD Ryzen 9 3900Xvs AMD Ryzen 7 5800XVSAMD Ryzen 9 3900Xvs Intel Core i5-12600KFVSIntel Core i5-12400Fvs Intel Core i5-12400VSIntel Core i5-12400Fvs Intel Core i7-11700KVSIntel Core i5-12400Fvs Intel Core i9-10850KVSIntel Core i5-12400Fvs Intel Core i9-10900KVS