Intel Core i5-10400 vs Intel Core i5-8400

Core i5-10400 vs Core i5-8400 comparison

Our benchmark analysis concludes that the Core i5-10400 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.

When comparing these CPUs we notice that they have the same number of cores but the Core i5-10400 has more threads. With our hardware info, we find that the Core i5-10400 has a slightly higher clock speed than the Core i5-8400. Also, the Core i5-10400 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. When comparing cache sizes, these CPUs have an identical amount of L2 cache. The Core i5-10400 also has slightly more L3 cache.

Most CPUs have more threads than cores. This technology, colloquially called hyperthreading, improves performance by splitting a core into multiple virtual ones. This provides more efficient utilisation of a core. Indeed, the Core i5-10400 has more threads than cores. Each physical core is split into multiple threads.