Intel Core i5-6400 vs Intel Core i7-6700K

Core i5-6400 vs Core i7-6700K benchmarks

According to the hardwareDB Benchmark tool, the Core i7-6700K is faster than the Core i5-6400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-6400 in all gaming tests too.

Info from our database shows that they both have the same core count but the Core i7-6700K has more threads. Our comparison shows that the Core i7-6700K has a significantly higher clock speed compared to the Core i5-6400. Also, the Core i7-6700K has a slightly higher turbo speed. A Core i5-6400 CPU outputs less heat than a Core i7-6700K CPU because of its significantly lower TDP. This measures the amount of heat they output and can be used to estimate power consumption. The data shows that both these CPUs have same sized L2 caches. The Core i7-6700K also has slightly 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. For instance, the Core i5-6400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.