"Women always remember every single detail of our conversations. Even the little ones."
According to studies, men and women process emotions differently, which in turn alters how they remember experiences and situations. Women are more responsive to emotional topics, particularly negative ones, and because their responses are more significant, they are better able to recall the topic at later dates.
However, it is important to note that this is only one type of memory - episodic memory to be exact. This is a long-term form of memory that comes from personal experiences. Therefore, when women seem as if they are better able to remember hyper-specific details, the details probably refer back to a moment or situation where they had intense emotional reactions.
Other studies have also shown that women excel in remembering the location of items, or remembering faces, which require more than just episodic memory, but verbal and visuospatial processing. So this is why all moms seem to remember where everything is!