AMD Ryzen 5 8400F vs AMD Ryzen 9 7900
—Single-core78.6
46.4Multi-core70.5
45.5Gamingspec-based83.3
5 spec wins — AMD Ryzen 5 8400F9 spec wins — AMD Ryzen 9 7900
InnoReviews verdict
No overall winner yet: AMD Ryzen 5 8400F 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 5 8400F
- 100% higher Max memory: 256 GB vs 128 GB
- 20% lower process: 4 nm vs 5 nm
- 14% higher Base clock: 4.2 GHz vs 3.7 GHz
- Has Cooler included — the other doesn't
- Lower launch price: $170 vs $429
Reasons to pick the AMD Ryzen 9 7900
- Stronger multi-core score: 71 vs 46
- 300% higher L3 cache: 64 MB vs 16 MB
- 100% higher cores: 12 vs 6
- 100% higher Performance cores: 12 vs 6
- 100% higher threads: 24 vs 12
General
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| Announced | 2024 | 2023 |
| Socket | AM5 | AM5 |
| Process | 4 nm+20% | 5 nm |
| Base TDP | 65 W | 65 W |
| Max turbo power | 88 W | — |
| Unlocked multiplier | Yes | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| Cores | 6 | 12+100% |
| Performance cores | 6 | 12+100% |
| Efficiency cores | 0 | 0 |
| Threads | 12 | 24+100% |
| Base clock | 4.2 GHz+14% | 3.7 GHz |
| Boost clock | 4.7 GHz | 5.4 GHz+15% |
| L2 cache | 6 MB | 12 MB+100% |
| L3 cache | 16 MB | 64 MB+300% |
Integrated GPU
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| iGPU | — | AMD Radeon Graphics |
| iGPU clock | — | 2,200 MHz |
Memory
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| Memory support | DDR5-5200 | DDR5-5200 |
| Max memory | 256 GB+100% | 128 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| PCIe version | 4 | 5+25% |
| CPU PCIe lanes | 20 | 28+40% |
Benchmarks
| Spec | AMD Ryzen 5 8400F | AMD Ryzen 9 7900 |
|---|---|---|
| Geekbench 6 (single) | — | 2,990Top 19% |
| Geekbench 6 (multi) | — | 15,725Top 28% |
| Cinebench R23 (single) | — | 1,966Top 26% |
| Cinebench R23 (multi) | — | 24,776Top 21% |
| PassMark | 24,372Bottom 45% | 48,013+97%Top 20% |
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