On Feb 18, 2009, at 3:27 AM, imac_chips99 wrote:
> > I would like to add more RAM to a iMAC G3 333 MHz with 192 MB. I > have no specialized store for iMAC locally. > > The iMAC G3 CRT model came in two models, a tray loader > (233/266/333 MHz CPU) and the slot loader model > (350/400/450/500/600/700 MHz CPU). > > The tray loader takes Two slots for PC100 SDRAM (SO-DIMM) while > the slot loader takes Two slots for PC100 SDRAM. > > http://en.wikipedia.org/wiki/IMac_G3 > > Does both models take the exact same RAM? What's > (SO-DIMM)? No they don't. They take two different kinds. The tray loaders take up to two 128 or 256MB 144-pin SO-DIMM PC66 cards for a max of 512MB. PC100 Ram will not work in these. The slot loaders take 168-pin PC100 SO-DIMM's. They'll take 128, 256, or 512 mb sticks for a max of 1 GB. SO-DIMM is the small memory form factor that's used in laptops. <http://en.wikipedia.org/wiki/SO-DIMM> > I'm told that you can't use most IBM PC type memory > PC100 SDRAM but some will work. How can I tell which > memory type will work in the iMAC G3? Some may work but > be unstable, etc. You cannot use SO-DIMM chips above a certain density, so higher capacity chips will typically only report and use half the rated memory. The physical layout of PC66 and PC100 SO-DIMMS is different so you can't physically stick them into the slots. A good place to find out exactly what kind of memory your system will take (and where I got the data above) is Data Memory Systems <http://www.datamemorysystems.com/> who are also a good source for the ram, they're usually pretty cheap, and I've been using them for years and years with nothing but good customer service. They worked with one of our faculty members for weeks to get his (PC laptop) upgrade working, it turned out they'd been given the wrong specs for his system by the manufacturer. In the end they gave him the correct memory. > > What's the cheapest way to find memory for this older > computer? > The LEM Swaplist, craigslist, E-Bay. This memory is no longer made (or no longer made in quantity) and so is getting more expensive. > What makes the iMAC memory special? Nothing. Apple's used standard RAM of the same type as PC's in their systems since the advent of the G3 powermacs back in the 90's. -- Bruce Johnson University of Arizona College of Pharmacy Information Technology Group Institutions do not have opinions, merely customs --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to Low End Mac's iMac List, a group for those using G3, G4, G5, and Intel Core iMacs as well as Apple eMacs. The list FAQ is at http://lowendmac.com/imac/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] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/imaclist?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
