The
90671 is based on
Alder Lake architecture while the
i9-9900K is based on
Coffee Lake.
Using the multithread performance as a reference, the 90671 gets a score of
878.6 k points while the i9-9900K gets
545.3 k points.
Summarizing, the
90671 is
1.6 times faster than the
i9-9900K. To get a proper comparison between both models, take a look to the data shown below.