Intel Core i5-10600K vs Intel Core i5-8400
36.4Single-core31.1
34.7Multi-core28.6
39.2Gamingspec-based27.2
12 spec wins — Intel Core i5-10600K2 spec wins — Intel Core i5-8400
InnoReviews verdict
Intel Core i5-10600K wins this desktop processor face-off, 36.3 to 29, pulling ahead mainly in multi-core (+6) and single-core (+5). 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 Intel Core i5-10600K
- Stronger single-core score: 36 vs 31
- Stronger multi-core score: 35 vs 29
- 100% higher threads: 12 vs 6
- 100% higher Max memory: 128 GB vs 64 GB
- 58% higher PassMark: 14,500 vs 9,200
Reasons to pick the Intel Core i5-8400
- 48% lower Base TDP: 65 W vs 125 W
- Has Cooler included — the other doesn't
- Lower launch price: $182 vs $262
General
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| Announced | 2020 | 2017 |
| Socket | LGA1200 | LGA1151-v2 |
| Process | 14 nm | 14 nm |
| Base TDP | 125 W | 65 W+48% |
| Max turbo power | 182 W | — |
| Unlocked multiplier | Yes | No |
| Cooler included | No | Yes |
Cores & Clocks
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| Cores | 6 | 6 |
| Performance cores | 6 | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 12+100% | 6 |
| Base clock | 4.1 GHz+46% | 2.8 GHz |
| Boost clock | 4.8 GHz+20% | 4 GHz |
| L2 cache | 2 MB | 2 MB |
| L3 cache | 12 MB+33% | 9 MB |
Integrated GPU
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| iGPU | Intel UHD Graphics 630 | Intel UHD Graphics 630 |
| iGPU clock | 1,200 MHz | 1,050 MHz |
Memory
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| Memory support | DDR4-2666 | DDR4-2666 |
| Max memory | 128 GB+100% | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 16 | 16 |
Benchmarks
| Spec | Intel Core i5-10600K | Intel Core i5-8400 |
|---|---|---|
| Geekbench 6 (single) | 1,560+14%Bottom 33% | 1,370Bottom 22% |
| Geekbench 6 (multi) | 6,500+33%Bottom 31% | 4,900Bottom 19% |
| Cinebench R23 (single) | 1,230+7%Bottom 25% | 1,150Bottom 22% |
| Cinebench R23 (multi) | 9,200+44%Bottom 32% | 6,400Bottom 19% |
| PassMark | 14,500+58%Bottom 26% | 9,200Bottom 14% |
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