AMD Ryzen 9 3900X vs Intel Core Ultra 5 245KF
37.6Single-core92.4
54.2Multi-core75.7
78.3Gamingspec-based58.4
5 spec wins — AMD Ryzen 9 3900X13 spec wins — Intel Core Ultra 5 245KF
InnoReviews verdict
Intel Core Ultra 5 245KF wins this desktop processor face-off, 76.4 to 55.3, pulling ahead mainly in single-core (+55) and multi-core (+22). 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
- 167% higher L3 cache: 64 MB vs 24 MB
- 100% higher Performance cores: 12 vs 6
- 71% higher threads: 24 vs 14
- 16% lower Base TDP: 105 W vs 125 W
- Has Cooler included — the other doesn't
Reasons to pick the Intel Core Ultra 5 245KF
- Stronger single-core score: 92 vs 38
- Stronger multi-core score: 76 vs 54
- 333% higher L2 cache: 26 MB vs 6 MB
- 115% higher Geekbench 6 (single): 3,307 vs 1,540
- 100% higher Max memory: 256 GB vs 128 GB
- Lower launch price: $294 vs $499
General
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 5 245KF |
|---|---|---|
| Announced | 2019 | 2024 |
| Socket | AM4 | LGA1851 |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 105 W+16% | 125 W |
| Max turbo power | 142 W | 159 W+12% |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 5 245KF |
|---|---|---|
| Cores | 12 | 14+17% |
| Performance cores | 12+100% | 6 |
| Efficiency cores | 0 | 8 |
| Threads | 24+71% | 14 |
| Base clock | 3.8 GHz | 4.2 GHz+11% |
| Boost clock | 4.6 GHz | 5.2 GHz+13% |
| L2 cache | 6 MB | 26 MB+333% |
| L3 cache | 64 MB+167% | 24 MB |
Memory
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 5 245KF |
|---|---|---|
| Memory support | DDR4-3200 | DDR5-6400 |
| Max memory | 128 GB | 256 GB+100% |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 5 245KF |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24 | 24 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 5 245KF |
|---|---|---|
| Geekbench 6 (single) | 1,540Bottom 33% | 3,307+115%Top 5% |
| Geekbench 6 (multi) | 11,000Top 46% | 19,856+81%Top 14% |
| Cinebench R23 (single) | 1,300Bottom 34% | — |
| Cinebench R23 (multi) | 18,300Top 31% | — |
| PassMark | 32,600Top 37% | 43,046+32%Top 23% |
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