On May 28, 2010, at 6:40 AM, PeterH wrote: > > On May 27, 2010, at 11:44 PM, Kris Tilford wrote: > >> >>> And you quote below it is to be 128MB where yours in hand is 256??? >> >> This is a mistake by Apple, when the Lombard came out 128MB was the largest >> SoDimm manufactured. It can take 256MB fine. > > Almost true. > > When the Lombard was tested in-house, Apple only qualified 128 MB sticks, and > it did not qualify any 256 MB sticks because these were, then, too expensive, > therefore Apple's specification reads that only sticks up to and including > 128 MB sticks are approved (and are guaranteed to work). The design limit of > the Wallstreet and Lombard DRAM controller is 2 x 256 MB = 512 MB, with no > stick exceeding 256 MB. 512 MB sticks were finally supported in the Pismo. > > The same thing happened on the Beige G3, where 384 MB, maximum, remained in > the specification long after everyone and his uncle had abandoned 128 MB > stick production for 256 MB stick production. The Beige G3 (all models) has > an actual maximum of 768 MB, although for the DT Beige G3, only "low profile" > sticks will fit, unless the PSU's fan protector is removed from the upper > half of the "clamshell" case. In all cases, only "low density" RAM is > supported, as is usual for Apple. The design limit of the Beige G3 DRAM > controller is 3 x 256 MB = 768 MB, with no stick exceeding 256 MB. 512 MB > sticks were finally supported in the Gigabit Ethernet G4. > >
Is there a way to get a 512 stick to run in a Wally? John Carmonne Yorba Linda USA Sent from my MBP -- You received this message because you are a member of G-Books, 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 leave this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g-books Support for older Macs: http://lowendmac.com/services/
