Core i5-10400 vs Core i5-6400 specs and performance
In our benchmarks, the Core i5-10400 beats the Core i5-6400 in overall performance. Furthermore, our gaming benchmark shows that it also outperforms the Core i5-6400 in all gaming tests too.
In terms of the number of cores of each of these CPUs, the Core i5-10400 has significantly more cores than the Core i5-6400. Indeed, the Core i5-10400 has 6 cores compared to 4 cores found in the Core i5-6400. It also has more threads than the Core i5-6400. Our comparison shows that the Core i5-10400 has a slightly higher clock speed compared to the Core i5-6400. 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. The cache sizes of these CPUs are different. Indeed, the Core i5-10400 has significantly more L2 cache than the Core i5-6400. The Core i5-10400 also has significantly 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.
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