The Intel Core i5-14400 is the objective winner of this comparison, securing victories in ten out of fourteen measured specifications. Its most significant technical advantage over the Intel Core i7-10700K is its L2 cache capacity, which is 375% larger. This substantial improvement in cache architecture positions the newer processor as the superior option across the vast majority of the evaluated metrics, providing a more modern foundation for system performance compared to the older hardware.

Users prioritizing modern architecture and the efficiency of a significantly larger L2 cache should choose the Intel Core i5-14400 for their build. Conversely, the Intel Core i7-10700K remains the appropriate selection for those who specifically require a higher base clock speed, where it maintains a 52% advantage. By focusing on these distinct differences in cache size and base frequency, buyers can align their choice with their specific technical requirements.