AMD Ryzen 9 7900 vs Intel Core i5-8400
78.6Single-core31.1
70.5Multi-core28.6
83.3Gamingspec-based27.2
18 spec wins — AMD Ryzen 9 79001 spec wins — Intel Core i5-8400
InnoReviews verdict
AMD Ryzen 9 7900 wins this desktop processor face-off, 76.1 to 29, pulling ahead mainly in single-core (+47) and multi-core (+42). Intel Core i5-8400 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 7900
- Stronger single-core score: 79 vs 31
- Stronger multi-core score: 71 vs 29
- 700% higher L2 cache: 12 MB vs 2 MB
- 611% higher L3 cache: 64 MB vs 9 MB
- 422% higher PassMark: 48,013 vs 9,200
Reasons to pick the Intel Core i5-8400
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $429
General
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| Announced | 2023 | 2017 |
| Socket | AM5 | LGA1151-v2 |
| Process | 5 nm+64% | 14 nm |
| Base TDP | 65 W | 65 W |
| Unlocked multiplier | Yes | No |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| Cores | 12+100% | 6 |
| Performance cores | 12+100% | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 24+300% | 6 |
| Base clock | 3.7 GHz+32% | 2.8 GHz |
| Boost clock | 5.4 GHz+35% | 4 GHz |
| L2 cache | 12 MB+700% | 2 MB |
| L3 cache | 64 MB+611% | 9 MB |
Integrated GPU
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| iGPU | AMD Radeon Graphics | Intel UHD Graphics 630 |
| iGPU clock | 2,200 MHz | 1,050 MHz |
Memory
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| Memory support | DDR5-5200 | DDR4-2666 |
| Max memory | 128 GB+100% | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| PCIe version | 5+67% | 3 |
| CPU PCIe lanes | 28+75% | 16 |
Benchmarks
| Spec | AMD Ryzen 9 7900 | Intel Core i5-8400 |
|---|---|---|
| Geekbench 6 (single) | 2,990+118%Top 19% | 1,370Bottom 22% |
| Geekbench 6 (multi) | 15,725+221%Top 28% | 4,900Bottom 20% |
| Cinebench R23 (single) | 1,966+71%Top 26% | 1,150Bottom 23% |
| Cinebench R23 (multi) | 24,776+287%Top 21% | 6,400Bottom 19% |
| PassMark | 48,013+422%Top 20% | 9,200Bottom 14% |
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