The
906ED 2.1GHz is based on
Comet Lake architecture while the
i7-8700k is based on
Coffee Lake.
Using the multithread performance as a reference, the 906ED 2.1GHz gets a score of
657.2 k points while the i7-8700k gets
443.8 k points.
Summarizing, the
906ED 2.1GHz is
1.5 times faster than the
i7-8700k. To get a proper comparison between both models, take a look to the data shown below.