Upgrade from os x 10.2 on imac G4

Discussion in 'Mac Basics and Help' started by Halibut Man, Jan 8, 2009.

  1. Halibut Man macrumors newbie

    Jan 8, 2009
    I have an imac Power PC G4 with a 1.25 GHz processor and 256 MB of Memory currently running on OS X 10.2.8 which was pre-installed when I purchased the machine from new in 2003. I have 59 GB remaining of hard drive ( capacity 74 GB ).
    I want to update my operating system - ideally to Leopard 10.5.
    Can this be installed and run on my system as it currently stands ?
    If not what do I need to do to enable it to do so ? http://images.macrumors.com/vb/images/smilies/confused.gif
  2. r.j.s Moderator emeritus


    Mar 7, 2007
    You'd need more RAM for Leopard, but Tiger (10.4) should do ok.
  3. Halibut Man thread starter macrumors newbie

    Jan 8, 2009
    Thanks for this rjs.
    Reading past forum contributions it would appear that to run Leopard I would require a minimum of 1 Gb of RAM. It doesn't look likely that I can achieve this as I don't want to tackle replacing the RAM in the factory slot myself and I live in the sticks - this leaves only the user slot to fill which can only take up to 512 Mb RAM.
    This is the one recommended by Crucial :

    512MB, 200-pin SODIMM, DDR PC2700 memory module
    Module Size: 512MB
    Package: 200-pin SODIMM
    Feature: DDR PC2700
    Specs: DDR PC2700 • CL=2.5 • Unbuffered • NON-ECC • DDR333 • 2.5V •

    My question here ( if the above is all correct ? ) is can I fit and use more RAM in the user slot than is fitted in the factory slot ?
    Assuming that I can this would give me a total of 768 Mb of RAM - what is the most up to date version of OSX ( which would run smoothly ) that I could install ?

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