Intel Core i5-6400 vs Intel Core i5-9400F

Core i5-6400 vs Core i5-9400F comparison

In our benchmarks, the Core i5-9400F beats the Core i5-6400 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-6400 in all gaming tests too.

With info from our database, we find that the Core i5-9400F has significantly more cores with 6 cores whereas the Core i5-6400 has 4 cores. It also has more threads than the Core i5-6400. These CPUs have different clock speeds. Indeed, the Core i5-9400F has a slightly higher clock speed compared to the Core i5-6400. Also, the Core i5-9400F has a slightly higher turbo speed. Both these chips have an identical TDP (Thermal Design Power). This measures the amount of heat they output and can be used to estimate power consumption. In terms of cache, the Core i5-9400F has significantly more L2 cache when compared to the Core i5-6400. The Core i5-9400F also has significantly 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 i5-6400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.