The
E5-2651 v2 is based on
Ivy Bridge architecture while the
2700X is based on
Zen+.
Using the multithread performance as a reference, the E5-2651 v2 gets a score of
426.2 k points while the 2700X gets
412.1 k points.
Summarizing, the
E5-2651 v2 is
1 times faster than the
2700X. To get a proper comparison between both models, take a look to the data shown below.