[Zachery]

There are a few different factors that all added up, at least from my understanding/point of view:

- AMD tried something new (FX series), that didn't go as well as they had hoped (they tried doing something similar to the P4 arc and thought they could do it better than intel). Which resulted in sub-par processors. So people continued to prefer Intel processors.

- Intel having no real need to continue to advance its processors with no serious threat, continued to do smaller iterations on its line, moving from a tick-tock cycle (big improvements, followed by a yearly refresh for additional small improvements) to more of a tick tick tock cycle (more yearly refreshes with marginal improvements).

- Intel also had issues getting their fabs down to smaller processors, which may have contributed to the change in how their cycles were going.

- Intel has also had more issues lately with speculate execution attacks, which due to their current design in how they implemented OoO-execution, has lead them to disabling some of this functionality. This disabling decreases some of their previous performance advantages. AMD has also been hit with some, but not to the same extent with intel, and usually not to the same level of performance degradation.