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Thread: What's the newest version of OSX I can use?

  1. #1

    Member Since
    Oct 04, 2007
    What's the newest version of OSX I can use?
    Recently acquired an old lamp G4 iMac. What's the highest version of Leopard I can install on this thing? Thanks.

  2. #2

    dtravis7's Avatar
    Member Since
    Jan 04, 2005
    Modesto, Ca.
    What is the CPU's speed in that G4 iMac? Click the Apple and on About This Mac. Report back.

    If it's 867 Mhz and above, you can run 10.5 Leopard. If not, 10.4 Tiger.

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