my 4 years old 4670k (4.5Ghz),
runs the same (single & ~multi-core) as a brand new Stock Kabylake 7600k, 3.8Ghz - (turbo) 4.2Ghz
and
runs the same (single core) and ~18% lower (multi-core) as a Stock Skylake 6700k, 4.0Ghz - (turbo) 4.2Ghz
runs the same (single & ~multi-core) as a brand new Stock Kabylake 7600k, 3.8Ghz - (turbo) 4.2Ghz
and
runs the same (single core) and ~18% lower (multi-core) as a Stock Skylake 6700k, 4.0Ghz - (turbo) 4.2Ghz