The
506E8 is based on
Kaby Lake architecture while the
9420 is based on
Excavator.
Using the multithread performance as a reference, the 506E8 gets a score of
211.6 k points while the 9420 gets
46.3 k points.
Summarizing, the
506E8 is
4.6 times faster than the
9420. To get a proper comparison between both models, take a look to the data shown below.