Logic Board, Power Mac G4 MDD Dual 1.25 $50.00 Mirrored Drive Doors Logic Board, Power Mac G4 MDD Dual 1.25 quantity Add to cart Add to Quote Continue Shopping Category: M8570 Power Mac G4 MDD Description 630-4269, 820-1453, 661-1771. Logic Board for the Dual 1.25Ghz processor (processor not included). 2002, 167MHz bus, no firewire 800 port. Works great! SN KD230703EXNFGA