Hello Andreas, Thank you for the invaluable information. It was very helpful. Let's see if I can find that diagnostics disc, and if not, then I know what to do with the G5. Best regards, Dana
(iPad-sent) On Oct 7, 2012, at 2:53 AM, "Mac User #330250" <macuser330...@gmx.net> wrote: > ---------- Original message ---------- > Subject: Re: Swapping out a G5 Motherboard > Date: Sunday, 07. October 2012 > From: DLC <dlcatft...@gmail.com> > To: "G-Group" <g3-5-list@googlegroups.com> >> Greetings all, >> Still curious about this scenario. Simply, can one swap good G5 CPUs >> into a replacement motherboard without any problems? >> Thanks, >> Dana >> >> On Oct 2, 10:56 pm, DLC <dlcatft...@gmail.com> wrote: >>> Greetings all. >>> I while back I had a troublesome G5 tower (June 04 model Dual 1.8GHz CPUs >>> w/PCI slots, 8x AGP) that was giving me boot-up issues. With help from >>> the list, I pretty much determined that I needed to replace the >>> motherboard. I've located a reasonably priced replacement, so I would >>> like to execute the swap-out. Here is my question: >>> once I plug in the known-good CPUs into the motherboard, am I going to >>> have to execute the CU provisioning that requires the special boot CD >>> and service code to initialize it/them? >>> I'd hate to expend resources and time just to find out the hard way. >>> Thanks in advance for your advice. >>> Regards, >>> Dana > > From what I’ve heard, you will require a Apple Service Diagnostics disc from > which you have to boot and to recalibrate the CPUs with the mainboard. If you > don’t, you might get very loud fans in the good scenario or burn anything on > the mainboard or the CPUs in the bad scenario. > > But this is just what I heard, not what I know. > > The thing with the service code to activate them is also something that > sounds > reasonable to me… > > For G5s, you need the 2.5.7 ASD discs. For the Late-2005 G5s, the last G5s > built, you will require the 2.5.8 ASD discs. > > You may be able to find a downloadable version, but be aware that Apple never > officially made a download available for this. > Since Apple abandoned the Power Macs in my sense you can consider it to be > Abandonware though. > > The swap will work if the CPU is the same series. For instance, you will have > to use a PowerPC 970 processor for the original G5, a PowerPC 970fx will not > work. And I’m pretty sure that for the later models using the PowerPC 970fx > processors, a PowerPC 970 will not work. The same goes for the PowerPC 970MP > which can only be found in the Late-2005 G5s. > > The June-2004 has PowerPC 970fx processors. > > Good luck! > Cheers, > Andreas aka Mac User #330250 > > -- > 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
