We did this with an old MacBook, upgrading it 2GB beyond the orig max memory spec. Works fine. In your case, you can put one 2GB DIMM and one 4GB DIMM in your iMac, as it can physically address up to 6GB. (Two 4GB DIMMs will "work" but you'll be wasting 2GB). Apple's specification of 4GB as the max memory was made before the introduction of 4GB DIMMs, thus two slots held 4GB max. 6GB will work fine, without anomalies (other than dumping $120 into a 5 year old machine... ;)
On Feb 22, 2012, at 8:06 PM, Jean-Christophe Helary wrote: > I have a first generation 24" Intel aluminum iMac (with the black back, not > the aluminum back). > > It is the mid 2007 model with the optional 2.8 ghz CPU on the Wikipedia page: > http://en.wikipedia.org/wiki/IMac_(Intel-based)#Aluminum_iMac > > The machine is said to support only 4GB and I ordered it with 2GB chips in > each of its 2 memory slots. > > Recently I called Apple and they gave me the official position: no upgrade > possible on this machine. Still, I'm wondering if it is possible to put 2x4GB > chips in it to speed up the VirtualBox VMs I use with it... > > Here, it says "actual max RAM" is 6GB: > http://www.everymac.com/systems/apple/imac/stats/imac-core-2-extreme-2.8-24-inch-aluminum-specs.html > > "*Apple officially supports 4 GB of RAM, but third-parties have been able to > upgrade the system to 6 GB of RAM using one 2 GB and one 4 GB memory module." > > Any idea on the subject ? > > Jean-Christophe Helary > ---------------------------------------- > fun: http://mac4translators.blogspot.com > work: http://www.doublet.jp (ja/en > fr) > tweets: http://twitter.com/brandelune > > _______________________________________________ > MacOSX-talk mailing list > [email protected] > http://www.omnigroup.com/mailman/listinfo/macosx-talk _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
