Update
SiliconLottery binning stats for i7-8700k
As of 12/01/17, the top 16% of tested 8700Ks were able to hit 5.2GHz or greater. (AVX Offset 2 ; < 1.425V Vcore)
As of 12/01/17, the top 43% of tested 8700Ks were able to hit 5.1GHz or greater. (AVX offset 2 ; < 1.412V Vcore)
As of 12/01/17, the top 72% of tested 8700Ks were able to hit 5.0GHz or greater. (AVX offset 2 ; < 1.40V Vcore)
As of 12/01/17, the top 99% of tested 8700Ks were able to hit 4.9GHz or greater. (AVX offset 2 ; < 1.387V Vcore)
and for i5-8600k
As of 12/01/17, the top 13% of tested 8600Ks were able to hit 5.3GHz or greater. (AVX offset 2, < 1.437V Vcore)
As of 12/01/17, the top 38% of tested 8600Ks were able to hit 5.2GHz or greater. (AVX offset 2, < 1.425V Vcore)
As of 12/01/17, the top 65% of tested 8600Ks were able to hit 5.1GHz or greater. (AVX offset 2, < 1.412V Vcore)
As of 12/01/17, the top 84% of tested 8600Ks were able to hit 5.0GHz or greater. (AVX offset 2, < 1.40V Vcore)
As of 12/01/17, the top 98% of tested 8600Ks were able to hit 4.9GHz or greater. (AVX offset 2, < 1.387V Vcore)