Intel Core i5-9400 vs Intel Core i7-8565U

Core i5-9400 vs Core i7-8565U benchmarks

In our benchmarks, the Core i5-9400 beats the Core i7-8565U in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-8565U in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i5-9400 has significantly more cores than the Core i7-8565U. Indeed, the Core i5-9400 has 6 cores compared to 4 cores found in the Core i7-8565U. Despite this, the Core i7-8565U has more threads than the Core i5-9400. Our comparison shows that the Core i5-9400 has a significantly higher clock speed compared to the Core i7-8565U. Despite this, the Core i7-8565U has a slightly higher turbo speed. The Core i7-8565U outputs less heat than Core i5-9400 thanks to a significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The info from our database shows that the Core i5-9400 has more L2 cache than the Core i7-8565U. The Core i5-9400 also has slightly more L3 cache.

Modern CPUs generally have more logical cores than physical cores, this means that each core is split into multiple virtual cores, improving efficiency for parallel workloads. For instance, the Core i5-9400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.