@Doc
I can't help at all with the technical specs of the different boards and chips etc. I am very envious that you have "THREE" A3000's. I've only got one. The one thing I have learned though, is that old saying about "If it ain't broke, don't fix it." is usually true. Especially for me, I know just enough to be dangerous to myself and my Amiga's, and that usually costs me "Money". :-D :-D Enjoy your Miggies!