Intel Core i5-6400 vs Intel Core i5-8250U

Core i5-6400 vs Core i5-8250U specs and performance

Our benchmark analysis concludes that the Core i5-6400 performs better than the Core i5-8250U. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8250U in all gaming tests too.

Info from our database shows that they both have the same core count but the Core i5-8250U has more threads. These CPUs have different clock speeds. Indeed, the Core i5-6400 has a significantly higher clock speed compared to the Core i5-8250U. Despite this, the Core i5-8250U has a slightly higher turbo speed. The Core i5-8250U outputs less heat than Core i5-6400 thanks to a 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 and L3 cache.

The more cores a CPU has, the better the overall performance will be in parallel workloads such as multitasking. Many CPUs have more threads than cores, this means that each physical core is split into multiple logical cores, making them more efficient. For instance, the Core i5-6400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.