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Max Ram 2006 White iMac?

2975 Views 4 Replies Latest reply: Apr 24, 2008 2:18 AM by Johns9 RSS
57MuddyWatersFan Calculating status...
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Apr 15, 2008 3:56 PM
I know the manual says that the late 2006 iMac can only handle 3GB ram, but has anyone put 2 2GB sticks in and had the OS recognize all of it? Thanks in advance.

Mike
2.4 GHz Intel MB 4GB ram 160 GB fw hd, Mac OS X (10.5.2), 2.8 GHz iMac 4GB ram 500 GB hd 500 GB fw hd
  • The Looby Level 4 Level 4 (1,285 points)
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    Apr 15, 2008 4:17 PM (in response to 57MuddyWatersFan)
    Yes, 2x2GB will work -- and Apple 'endorses' the practice:

    [Apple Support, Intel iMac: Memory specs & installation|http://docs.info.apple.com/article.html?artnum=303084]

    The OS reports all 4GB, and actually uses about 3.3GB. You'll also
    get a small performance bonus for using a "matched pair"

    [Apple: RAM Expansion Developer Note -- iMac|http://developer.apple.com/documentation/HardwareDrivers/Conceptual/HWTechRAM/Articles/RAM_implementation.html#//apple_ref/doc/uid/TP40003899-SW71200331177]

    http://eshop.macsales.com/shop/MemoryBenchmark/AppleiMac/

    http://guides.macrumors.com/UnderstandingIntel_MacRAM

    Looby
    White 20" C2D, Mac OS X (10.5.1), One measurement is worth a thousand expert opinions.
  • LouNew2Mac Calculating status...
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    Apr 23, 2008 10:26 PM (in response to 57MuddyWatersFan)
    Hi,

    I am now totally confused. I was planning to buy 2 x 2GB memory cards for my Late 2006 iMac 2.16. I had read lots of posts here and elsewhere and thought it would work. As a final check I called Apple tech support this morning. The guy didn't know so he checked with his supervisor who told him to tell me it would only recognize one of the cards and wouldn't see the other at all, not even to get to the 3GB it can handle. Shortly thereafter I ordered 1 2GB card from Mushkin. When I read the articles Looby referenced, it sounds like it is much better to have two matching SIZE cards, ie, 2 x 2GB and from all the other documentation, it will DEFINITELY be able to read both cards. Why can't I get a straight answer from Apple?

    Should I let them ship me the one card or cancel and reorder the 2 x 2GB cards so they match? You seem to know what you're talking about so I am giving you the final vote.

    Thanks!

    Lou
    iMac, Mac OS X (10.5.2), iMac 2.16 20" (Late 2006) with 2GB RAM (2 x 1GB)
  • Johns9 Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 24, 2008 2:18 AM (in response to LouNew2Mac)
    here are results for 4 gb and matching vs unmatching:
    http://eshop.macsales.com/shop/MemoryBenchmark/AppleiMac/

    As you can see there is performance improvements.

    I ask this- can anyone confirm this??? Can we get some screenshots how imac addresses 4GB?
    I also have 2.16 iMac (24"). I am considering is it worth performance-vice to upgrade? Currently I have 2GB original Apple memory. But is it wort it? These test are one thing, but how does that work in real life?

    Thanks!
    imac, Mac OS X (10.4.11), -(10.5) still testing. 2GB memory 500 GB HD

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