Intel Core i5-6400 vs Intel Core i5-8400

Core i5-6400 vs Core i5-8400 specs and performance

Our benchmark analysis concludes that the Core i5-8400 performs better than the Core i5-6400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-6400 in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i5-8400 has significantly more cores than the Core i5-6400. Indeed, the Core i5-8400 has 6 cores compared to 4 cores found in the Core i5-6400. It also has more threads than the Core i5-6400. With our hardware info, we find that the Core i5-8400 has a slightly higher clock speed than the Core i5-6400. Also, the Core i5-8400 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. The info from our database shows that the Core i5-8400 has more L2 cache than the Core i5-6400. The Core i5-8400 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.