The
i5-4670K is based on
Haswell architecture while the
506E8 3GHz is based on
Kaby Lake.
Using the multithread performance as a reference, the i5-4670K gets a score of
140.2 k points while the 506E8 3GHz gets
210.9 k points.
Summarizing, the
506E8 3GHz is
1.5 times faster than the
i5-4670K . To get a proper comparison between both models, take a look to the data shown below.