The
506E8 3GHz is based on
Kaby Lake architecture while the
3700U is based on
Zen+.
Using the multithread performance as a reference, the 506E8 3GHz gets a score of
210.9 k points while the 3700U gets
157.2 k points.
Summarizing, the
506E8 3GHz is
1.3 times faster than the
3700U. To get a proper comparison between both models, take a look to the data shown below.