Intel Core i5-11600K vs Intel Core i5-8400

Core i5-11600K vs Core i5-8400 specs and performance

Our benchmark analysis concludes that the Core i5-11600K performs better than the Core i5-8400. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8400 in all gaming tests too.

Info from our database shows that they both have the same core count but the Core i5-11600K has more threads. These CPUs have different clock speeds. Indeed, the Core i5-11600K has a slightly higher clock speed compared to the Core i5-8400. Also, the Core i5-11600K has a slightly higher turbo speed. The Core i5-8400 outputs less heat than Core i5-11600K 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. The Core i5-11600K also has slightly more 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. Indeed, the Core i5-11600K has more threads than cores. Each physical core is split into multiple threads.