> It is my understanding that as long as the Powermac shares the same Front > Side Bus, in this case, a 133 MHz, then yes, a CPU from a later model will > be compatible.
There are two 133 MHz processor standards: DA and QS. Processor card power comes from the motherboard on a DA. Processor card power comes through a stand-off screw on a QS. It is possible to install a QS processor in a DA PROVIDED the required +12 volts for the processor card is separately provided. The usual way of doing this is to provide a cable with a Molex connector on one end and a #10 eyelet on the other. Pin #1 on the Molex for +12 volts. Also, the required fan power is different between a QS and a DA. The usual way of doing this is to provide a cable with a Molex connector on one end and mating connector on the other end. Pin #1 for the Molex; pin #2 on the Molex for +12 volts return. -- 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
