Cool !! Two PPC processors running at the same time, although not equal. But about pci slots, I have an (unused) Mediator 4000Di to fit inside my A4000D and that one still allows me to use 3 Z3 slots, so that means 4 pci+3 Z3 ... for the time being a Z3 Powerflyer from Elbox doesn´t seem a too bad option ...