That used to work great back in the 90s but we live in a very different world now.Lesson to be learned: Don't transfer so many main components from one mother board to another unless you have to.
I always buy matched sets of MoBo CPU and Ram. If one component dies I buy another matched set. You can swap peripheral cards around until the cows come home and never have an issue but the core components must be able to communicate with each other effectively.