Intel Core i5-8600K vs Intel Core i9-9900K

Core i5-8600K vs Core i9-9900K specs and performance

Our benchmark analysis concludes that the Core i9-9900K performs better than the Core i5-8600K. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-8600K in all gaming tests too.

In terms of the number of cores of each of these CPUs, the Core i9-9900K has slightly more cores than the Core i5-8600K. Indeed, the Core i9-9900K has 8 cores compared to 6 cores found in the Core i5-8600K. It also has more threads than the Core i5-8600K. According to our data, the Core i5-8600K and Core i9-9900K have the same clock speed. Despite this, the Core i9-9900K 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 cache sizes of these CPUs are different. Indeed, the Core i9-9900K has slightly more L2 cache than the Core i5-8600K. The Core i9-9900K also has significantly 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. For instance, the Core i5-8600K has the same number of threads as cores. This means the the CPU does not support hyperthreading.