Intel Core i5-10400 vs Intel Core i5-9400

Core i5-10400 vs Core i5-9400 specs and performance

In our benchmarks, the Core i5-10400 beats the Core i5-9400 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-9400 in all gaming tests too.

Info from our database shows that they both have the same core count but the Core i5-10400 has more threads. In terms of clock speed, the Core i5-10400 and Core i5-9400 are identical in this regard. Despite this, 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.