Those came out a year apart and no one does not "smash" the other in performance. I doubt you can even notice the difference between the two, and that is the issue with CPUs today, they are not the bottleneck in most systems. I have used both of these (I like the 10600k as well) but they are almost exactly the same "performance" and would not turn up my nose at ether. The issue is that (especially in personal use cases) there is no justification in the newer systems. DDR4 still runs literally everything and both of these 4 year+ year old CPUs (that are now a few gens old) also will run anything well outside of exotic cases. You are more likely to see slowdowns with a lack of ram (since most programs today seem to think the stuff is unlimited), GPU bottlenecks, or just badly optimized software.