AMD Ryzen 9 3900X vs Apple M5 Ultra (36-core)
37.6Single-core—
54.2Multi-core—
78.3Gamingspec-based52.5
0 spec wins — AMD Ryzen 9 3900X6 spec wins — Apple M5 Ultra (36-core)
InnoReviews verdict
No overall winner yet: Apple M5 Ultra (36-core) lacks the published benchmark results an Inno Score requires, so there is no Inno Score to compare — we don't rank chips on their spec sheet alone. The spec table below still shows every difference we track.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 3900X
- Lower launch price: $499 vs $12,299
Reasons to pick the Apple M5 Ultra (36-core)
- 300% higher Max memory: 512 GB vs 128 GB
- 200% higher cores: 36 vs 12
- 57% lower process: 3 nm vs 7 nm
- 50% higher threads: 36 vs 24
General
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| Announced | 2019 | 2026 |
| Socket | AM4 | — |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 105 W | — |
| Max turbo power | 142 W | — |
| Unlocked multiplier | Yes | — |
| Cooler included | Yes | — |
Cores & Clocks
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| Cores | 12 | 36+200% |
| Performance cores | 12 | 12 |
| Efficiency cores | 0 | 24 |
| Threads | 24 | 36+50% |
| Base clock | 3.8 GHz | — |
| Boost clock | 4.6 GHz | 4.6 GHz |
| L2 cache | 6 MB | — |
| L3 cache | 64 MB | — |
Integrated GPU
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| iGPU | — | Apple 80-core GPU |
Memory
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| Memory support | DDR4-3200 | — |
| Max memory | 128 GB | 512 GB+300% |
| Memory channels | 2 | — |
Platform
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| PCIe version | 4 | — |
| CPU PCIe lanes | 24 | — |
Benchmarks
| Spec | AMD Ryzen 9 3900X | Apple M5 Ultra (36-core) |
|---|---|---|
| Geekbench 6 (single) | 1,540Bottom 33% | — |
| Geekbench 6 (multi) | 11,000Top 46% | — |
| Cinebench R23 (single) | 1,300Bottom 34% | — |
| Cinebench R23 (multi) | 18,300Top 31% | — |
| PassMark | 32,600Top 37% | — |
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