The Intel Core i5-9600K is the objective winner of this comparison, securing more total spec victories than the Intel Core i7-6700K. The most impactful advantage for the winning processor is its total core count, which is 50% higher than that of its competitor. This hardware configuration provides a distinct architectural edge in the primary category of core density, establishing the Intel Core i5-9600K as the superior option based on the analyzed technical specifications.

Users prioritizing core count should select the Intel Core i5-9600K for their build. Conversely, those who require a higher thread count should opt for the Intel Core i7-6700K, as it maintains a 33% advantage in that specific area. Choosing between these two components depends entirely on whether your specific computing needs are better served by the increased core density of the newer model or the superior thread capacity offered by the older unit.