---------- Original message ---------- Subject: Re: Swapping out a G5 Motherboard Date: Sunday, 07. October 2012 From: DLC <[email protected]> To: "G-Group" <[email protected]> > 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 <[email protected]> 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 [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list
