The Intel Core i7-11700K is the objective winner of this comparison, securing victory in eight of the fourteen evaluated categories. While the Intel Core i5-8600K maintains a notable lead in power efficiency with a 62% advantage in Max Turbo Power, the Intel Core i7-11700K provides a significantly more robust architecture. Its most impactful advantage is a 167% increase in thread count, which provides a substantial improvement in multi-threaded processing capabilities over the older model.

Users prioritizing raw multi-tasking performance and higher thread counts should choose the Intel Core i7-11700K for their system. Conversely, the Intel Core i5-8600K remains the better option for builders who prioritize lower Max Turbo Power requirements and energy efficiency. Selecting between these two processors depends entirely on whether your specific computing needs favor the superior thread density of the newer model or the power-efficient profile of the older unit.