Intel Core i5-9400F vs Intel Core i5-1235U

Core i5-9400F vs Core i5-1235U benchmarks

Our benchmark analysis concludes that the Core i5-1235U performs better than the Core i5-9400F. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-9400F in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i5-1235U has significantly more cores with 10 cores compared to the Core i5-9400F that has 6 cores. It also has more threads than the Core i5-9400F. Our comparison shows that the Core i5-9400F has a significantly higher clock speed compared to the Core i5-1235U. Despite this, the Core i5-1235U has a slightly higher turbo speed. The Core i5-1235U outputs less heat than Core i5-9400F thanks to a significantly lower TDP. 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 i5-1235U has significantly more L2 cache than the Core i5-9400F. The Core i5-1235U 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. For instance, the Core i5-9400F has the same number of threads as cores. This means the the CPU does not support hyperthreading.