The
i5-8259U is based on
Coffee Lake architecture while the
506E8 is based on
Kaby Lake.
Using the multithread performance as a reference, the i5-8259U gets a score of
229 k points while the 506E8 gets
211.6 k points.
Summarizing, the
i5-8259U is
1.1 times faster than the
506E8. To get a proper comparison between both models, take a look to the data shown below.