Core i7-7700K vs Core i5-8400H comparison
In our benchmarks, the Core i7-7700K beats the Core i5-8400H in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8400H in all gaming tests too.
When comparing these CPUs we notice that they have the same number of cores and the same number of threads. These CPUs have different clock speeds. Indeed, the Core i7-7700K has a significantly higher clock speed compared to the Core i5-8400H. Also, the Core i7-7700K has a slightly higher turbo speed. The Core i5-8400H outputs less heat than Core i7-7700K thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. When comparing cache sizes, these CPUs have an identical amount of L2 cache. The Core i5-8400H also has significantly more L3 cache.
Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i7-7700K has more threads than cores. Each physical core is split into multiple threads.
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