What's the thing with Dell Inspiron line?

A6TH

Honorable
Oct 16, 2013
6
0
10,510
About 3 years ago, I bought Dell Inspiron 17R N7110 model with i7-2670QM processor. I decided to upgrade this year and get my self a new Inspiron 17 7000 series, but the 2015 model, Inspiron 17 7746 comes with a 5th gen i7-5500U processor, which is less powerful than i7-2670QM. How is that possible? Why are they downgrading the CPU power?