Intel Core i5-9400F vs Intel Core i7-8700K
30.1Single-core37.3
27.9Multi-core34.7
27.8Gamingspec-based38.5
4 spec wins — Intel Core i5-9400F10 spec wins — Intel Core i7-8700K
InnoReviews verdict
Intel Core i7-8700K wins this desktop processor face-off, 36.4 to 28.5, pulling ahead mainly in single-core (+7) and multi-core (+7). Intel Core i5-9400F 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 i5-9400F
- 100% higher Max memory: 128 GB vs 64 GB
- 32% lower Base TDP: 65 W vs 95 W
- Has Cooler included — the other doesn't
- Lower launch price: $157 vs $359
Reasons to pick the Intel Core i7-8700K
- Stronger single-core score: 37 vs 30
- Stronger multi-core score: 35 vs 28
- 100% higher threads: 12 vs 6
- 56% higher Cinebench R23 (multi): 9,200 vs 5,900
- 51% higher Geekbench 6 (multi): 6,800 vs 4,500
General
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| Announced | 2019 | 2017 |
| Socket | LGA1151-v2 | LGA1151-v2 |
| Process | 14 nm | 14 nm |
| Base TDP | 65 W+32% | 95 W |
| Unlocked multiplier | No | Yes |
| Cooler included | Yes | No |
Cores & Clocks
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| Cores | 6 | 6 |
| Performance cores | 6 | 6 |
| Efficiency cores | 0 | 0 |
| Threads | 6 | 12+100% |
| Base clock | 2.9 GHz | 3.7 GHz+28% |
| Boost clock | 4.1 GHz | 4.7 GHz+15% |
| L2 cache | 2 MB | 2 MB |
| L3 cache | 9 MB | 12 MB+33% |
Integrated GPU
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| iGPU | — | Intel UHD Graphics 630 |
| iGPU clock | — | 1,200 MHz |
Memory
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| Memory support | DDR4-2666 | DDR4-2666 |
| Max memory | 128 GB+100% | 64 GB |
| Memory channels | 2 | 2 |
Platform
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| PCIe version | 3 | 3 |
| CPU PCIe lanes | 16 | 16 |
Benchmarks
| Spec | Intel Core i5-9400F | Intel Core i7-8700K |
|---|---|---|
| Geekbench 6 (single) | 1,400Bottom 24% | 1,560+11%Bottom 33% |
| Geekbench 6 (multi) | 4,500Bottom 16% | 6,800+51%Bottom 35% |
| Cinebench R23 (single) | 1,080Bottom 14% | 1,270+18%Bottom 29% |
| Cinebench R23 (multi) | 5,900Bottom 18% | 9,200+56%Bottom 32% |
| PassMark | 9,300Bottom 15% | 13,900+49%Bottom 23% |
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