TOPIC: Pismo CPU type numbers? http://groups.google.com/group/g-books/t/bdca0501e6d6c990?hl=en
Hi- to clarify please- I asked about the Pismo Processor of 500 mhz and a CPU type of: PowerPC 750 (83.0) and another with PowerPC 750 (42.2). Thanks to PeterH for the reply. (I have edited it to the G3 content as I am trying to understand), based on this information, which processor card do I want then, the one with 83.0 or the one with 42.2 in the CPU parentheses? Thanks. == 2 of 2 == Date: Sun, Mar 1 2009 7:25 am From: PeterH Just as there are a great many Intel processors (Non-Core Pentium, Core Pentium/Core, Core 2 Pentium/Core 2 [ * ] , Core 2 Solo, Core 2 Duo, Core 2 Quad, etcetera) there are many IBM Power processors.... G3 processors include several 750s, and some later ones, too, such as the 500 and 1 GHz examples... Early G3s, particularly the slower ones, were fabricated using aluminum as the internal conductors. Later G3s, particularly the faster ones, were fabricated using copper as the internal conductors. As these are CMOS processors, the lower resistance of copper facilitated making faster processors while maintaining its temperature, for otherwise a chip's power consumption increases as a function of its clock speed. A 750 is a 750 is a 750, but the later revision (sometimes called "step", or "stepping") may indicate a revised and/or improved process, which may also indicate a technology shift. But, it doesn't indicate a change in compatibility. Apple controlled its processor cards quite tightly, and a 750 of whatever revision is entirely interchangeable with a 750 of another revision. Apple made its early "New World" laptops with the chipset on the processor card. When you change the processor card, you are also changing the chipset. This is not true of the desktops, where the chipset remains on the motherboard. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to Low End Mac's G-Books list, a group for those using G3 iBooks and PowerBooks (we run a separate list for G4 'Books). The list FAQ is at http://lowendmac.com/lists/g-books.html and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g-books?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
