Yes, it can. It is the Motherboard that limits the booting, particularly the firmware and drivers in the OS. The processors are still just 7544/7457 series processors. I have seen people do this before. Mine, I just took the dual 1.25 board and overclocked it to dual 1.5. :P
On Feb 2, 2010, at 12:46 PM, Dan Knight, LowEndMac.com wrote: > I have a question that I hope someone here can answer. Can a 1.42 GHz > dual CPU module be transplanted to a FireWire 400 MDD motherboard > while still allowing booting into Mac OS 9? > > Thanks! > > Dan Knight, LowEndMac.com > > On Feb 2, 12:23 pm, "Mac User #330250" <macuser330...@gmx.net> wrote: >> The Dual-1 GHz MDD has a bus speed of 167 MHz and can take any MDD or FW800 >> CPU that is designed for the same bus speed. > <snip> >> 167 MHz Bus speed: >> MDD - 1.0 GHz Dual (1 MB cache on both processors) >> MDD - 1.25 GHz Dual (2 MB cache on both processors) >> FW800 - 1.25 GHz Dual (1 MB cache on both processors) >> FW800 - 1.42 GHz Dual (2 MB cache on both processor) >> MDD - 1.25 GHz single (1 MB cache) "education only" 2003 model > > -- > You received this message because you are a member of G-Group, a group for > those using G3, G4, and G5 desktop Macs - with a particular focus on Power > Macs. > The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette > guide is at http://www.lowendmac.com/lists/netiquette.shtml > To post to this group, send email to g3-5-list@googlegroups.com > For more options, visit this group at http://groups.google.com/group/g3-5-list -- You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to g3-5-list@googlegroups.com For more options, visit this group at http://groups.google.com/group/g3-5-list