Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!cs.utexas.edu!usc!apple!coherent!dplatt From: dplatt@coherent.com (Dave Platt) Newsgroups: comp.sys.mac.hardware Subject: Re: IIfx SIMMs Keywords: SIMMs, IIfx Message-ID: <66930@coherent.coherent.com> Date: 12 Aug 90 05:24:27 GMT References: <8878@ur-cc.UUCP> Reply-To: dplatt@coherent.com (Dave Platt) Organization: Coherent Thought Inc., Palo Alto CA Lines: 13 In article <8878@ur-cc.UUCP> carlo@cvs.rochester.edu (Carlo Tiana) writes: > Is this true? If so can you install just 2 4Mb SIMMs in all Macs > (specifically a IIci) and mix them with other denominations? I was > under the impression that mixing memory densities was a no-no, but > I guess there has not been much discussion about 4 Mb SIMMs. It's not true. Mixing SIMM sizes within a bank won't work. All Macs with 32-bit bus structures (II family, and SE/030) require that SIMMs be installed in sets of four, with all four in each set being of the same size. The Plus and SE do allow SIMMs to be installed in sets of two.