The Intel Core i5-12600KF is the objective winner of this comparison, securing victory in seven of the sixteen evaluated categories. Its most significant advantage over the Intel Core i5-12400 is the inclusion of E-Cores, which represent a 100% improvement in that specific metric. While the Intel Core i5-12400 holds a 48% advantage in TDP, the overall spec-win count confirms that the Intel Core i5-12600KF provides a more robust feature set for a wider range of computing tasks.

Users prioritizing power efficiency should select the Intel Core i5-12400, as its superior TDP rating makes it the more conservative choice for thermal management. Conversely, those who require the additional processing architecture provided by the E-Cores should opt for the Intel Core i5-12600KF. By choosing based on these specific advantages, buyers can align their hardware selection with either a focus on lower power consumption or the increased core capacity offered by the higher-performing model.