AMD Ryzen 9 3900X vs Intel Core Ultra 9 285
37.6Single-core84.7
54.2Multi-core86.9
78.3Gamingspec-based70.7
4 spec wins — AMD Ryzen 9 3900X13 spec wins — Intel Core Ultra 9 285
InnoReviews verdict
Intel Core Ultra 9 285 wins this desktop processor face-off, 82.2 to 55.3, pulling ahead mainly in single-core (+47) and multi-core (+33). 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
- 78% higher L3 cache: 64 MB vs 36 MB
- 52% higher Base clock: 3.8 GHz vs 2.5 GHz
- 50% higher Performance cores: 12 vs 8
- Has Unlocked multiplier — the other doesn't
Reasons to pick the Intel Core Ultra 9 285
- Stronger single-core score: 85 vs 38
- Stronger multi-core score: 87 vs 54
- 567% higher L2 cache: 40 MB vs 6 MB
- 100% higher cores: 24 vs 12
- 100% higher Max memory: 256 GB vs 128 GB
General
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 9 285 |
|---|---|---|
| Announced | 2019 | 2025 |
| Socket | AM4 | LGA1851 |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 105 W | 65 W+38% |
| Max turbo power | 142 W | 182 W+28% |
| Unlocked multiplier | Yes | No |
| Cooler included | Yes | — |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 9 285 |
|---|---|---|
| Cores | 12 | 24+100% |
| Performance cores | 12+50% | 8 |
| Efficiency cores | 0 | 16 |
| Threads | 24 | 24 |
| Base clock | 3.8 GHz+52% | 2.5 GHz |
| Boost clock | 4.6 GHz | 5.6 GHz+22% |
| L2 cache | 6 MB | 40 MB+567% |
| L3 cache | 64 MB+78% | 36 MB |
Integrated GPU
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 9 285 |
|---|---|---|
| iGPU | — | Intel Graphics |
| iGPU clock | — | 2,000 MHz |
Memory
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 9 285 |
|---|---|---|
| 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 9 285 |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 24 | 24 |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Intel Core Ultra 9 285 |
|---|---|---|
| Geekbench 6 (single) | 1,540Bottom 33% | 3,061+99%Top 16% |
| Geekbench 6 (multi) | 11,000Top 46% | 19,926+81%Top 13% |
| Cinebench R23 (single) | 1,300Bottom 34% | — |
| Cinebench R23 (multi) | 18,300Top 31% | — |
| PassMark | 32,600Top 37% | 57,762+77%Top 11% |
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