Core i5-8400 vs Core i7-7700K
The Core i7-7700K is about 3% faster for gaming.
Verdict
- Performance index: the Core i7-7700K is 3% faster (35 vs 34).
- Cores: Core i5-8400 has 6 vs 4.
- Power (TDP): Core i5-8400 65 W, Core i7-7700K 91 W; the Core i5-8400 delivers 36% more performance per watt.
- Platform: both use socket LGA1151.
Specs
| Spec | Core i5-8400 | Core i7-7700K |
|---|---|---|
| Performance index | 34 | 35 |
| Brand / series | Intel Core 8th Gen | Intel Core 7th Gen |
| Released | 2017 | 2017 |
| Cores | 6 | 4 |
| Threads | 6 | 8 |
| Base clock | 2.8 GHz | 4.2 GHz |
| Boost clock | 4 GHz | 4.5 GHz |
| Power (TDP) | 65 W | 91 W |
| Socket | LGA1151 | LGA1151 |