On 25 Mar 2014, at 19:31 , Jean-Christophe Helary <[email protected]> wrote:
> Thank you Charles for the reply. > >>> I just bought a number of 1333mhz 8gb >> >> There’s your problem right there. IIRC the 27” late 2009 iMac had four DIMM >> slots, each of which was officially rated at taking 4 GB sticks. >> Unofficially _most_ 8 GB sticks would work, but some won’t. > > Ok. Plus, indeed, reports that they worked were based on Core i5 or i7 > machines and not on the Core 2 Duo that I have. Core 2 Duos will have a different memory controller. I suspect that 8GB sticks simply won’t work. > >>> That does not seem to be the case. I got awful beeps when I tried to reboot >>> and whatever configuration I tried I could not get to have the chips >>> recognized. >> >> It should be that the sticks would work, but there’s more than just the >> speed. What latency are they, and what voltage? > > I wish I could tell from the package. They are Corsair "Mac Memory" chips and > the only technical information I seem to find is: > > 2x204-pin SODIMM DDR3 1333mhz 9-9-9-24 > > Searching on the web seems to give a 1.35v voltage but I can't seem to find > the latency. I think the voltage is okay, but it won’t matter if the memory controller and the memory bus won’t work, and I’m pretty sure Core 2 Duos won’t see 8 GB sticks, period. > > Jean-Christophe Helary > _______________________________________________ > 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
