Intel's next-generation Kaby Lake architecture is nearly here, and we're finally getting some real benchmark numbers from Tom's Hardware, showing that the new Kaby Lake architecture is slightly faster, and uses slightly more power, too.
The new 7700K was tested against the 6700K in a few different benchmarks, but we'll start with power consumption. The new 7700K uses 6% more power than the 6700K at stock clocks, while it uses 4.7% more than the 6700K when overclocked (with the 6700K overclocked, too).
The only game benchmarks that Tom's Hardware ran were Ashes of the Singularity, F1 2015, Metro: Last Light Redux, and The Talos Principle - all at 1080p. The 7700K beats the 6700K in every test, but if you were playing the games in a 7700K vs. 6700K blind test, I doubt you'd tell the difference between the processors with only a few FPS difference.