Howdy I’ve been reading the bonkers out of this forum in preparation to upgrade my Mac Pro. I know if I put a 5.1 dual cpu system in my 4.1 (2009) I will have fan issues. Question is can I swap a 5.1 logic board in, as well? And eliminate this issue. Will the 5.1 logic (backplane) board eliminate the need to upgrade 4.1–>5.1 EFI?