The
3900 is based on
Zen 2 architecture while the
90671 is based on
Alder Lake.
Using the multithread performance as a reference, the 3900 gets a score of
687.5 k points while the 90671 gets
878.6 k points.
Summarizing, the
90671 is
1.3 times faster than the
3900. To get a proper comparison between both models, take a look to the data shown below.