Intel Core i5-8400 vs Intel Core i7-7700

Core i5-8400 vs Core i7-7700 benchmarks

Our benchmark analysis concludes that the Core i5-8400 performs better than the Core i7-7700. Furthermore, our gaming benchmark shows that it also outperforms the Core i7-7700 in all gaming tests too.

When comparing core counts for these CPUs, we notice that the Core i5-8400 has significantly more cores with 6 cores compared to the Core i7-7700 that has 4 cores. Despite this, the Core i7-7700 has more threads than the Core i5-8400. Our comparison shows that the Core i7-7700 has a slightly higher clock speed compared to the Core i5-8400. Also, the Core i7-7700 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 i5-8400 has significantly more L2 cache than the Core i7-7700. The Core i5-8400 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 i5-8400 has the same number of threads as cores. This means the the CPU does not support hyperthreading.