13 Replies Latest reply: Apr 15, 2012 5:21 PM by babowa
emmigomag Level 1 (0 points)

I have a imac os x tiger 10.4 and have ordered a 1 gb memory bar to install and have snow leopard to install after that  BUT after i install snow leopard will that system allow me to but more memory into my computer or will i be able to upgrade to a lion system  without adding more memory? right now i can have 2gb memory max

imac, Mac OS X (10.4)
  • John Galt Level 8 (45,985 points)

    2 GB is the specified minimum however most people will recommend at least 4. I suspect you will not be pleased with Lion's performance with only 2 GB.


    OS X Lion system requirements

    To use Lion, make sure your computer has the following:

    • An Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
    • Mac OS X v10.6.6 or later to install via the Mac App Store (v10.6.8 recommended); you can install without Mac OS X v10.6 by using an OS X Lion USB Thumb Drive, available on the Apple Online Store
    • 7 GB of available disk space
    • 2 GB of RAM

    If your Mac does not meet these requirements, you will need to upgrade your Mac before installing Lion.

    For more information, see OS X Lion - Technical Specifications.

  • emmigomag Level 1 (0 points)

    ok so once iput the 1gb memory bar in and snow leopard i can add 4gb of memory and then will be ok to add lion?

  • emmigomag Level 1 (0 points)

    wor do i need to just add 4gb memory before snow leopard?

  • babowa Level 7 (29,965 points)

    Your iMac most likely has 2 x 512 MB; you will need to remove these and add 2 x 1 GB for a total of 2 GB; unless we know the model identifier of your Mac, we don't know if you can have more. Click on the apple and then About this mac and then more info: look at the hardware and post what it says on the right; there should be something like 8,2 or 9,1 for identifier.

  • John Galt Level 8 (45,985 points)

    It depends on your model iMac. You said you can have 2 GB max.


    To be sure, find out your hardware identifier. Go to the Apple menu, select "About this Mac" and then click "More Info..." The hardware identifier will be something like "iMac4,2". Find out what that is.

  • emmigomag Level 1 (0 points)

    its an imac 4,2 see i recently went to put in snow leopard and it said i needed more ram and so i ordered 1gb more of memory but sould i have gotten more gb of memory than 1gb that way i will have enough to put lion in next?

  • babowa Level 7 (29,965 points)

    Here are the specs for your Mac:




    The maximum RAM is 2 GB and you will not be able to run Lion on it because Lion requires a Core 2 Duo which yours is not.

  • emmigomag Level 1 (0 points)

    SO i need a new computer .  how do i upgrade then to be able to run lion?

  • babowa Level 7 (29,965 points)

    You can't upgrade the computer you have (for Lion)- you can increase the RAM to 2 GB (2 x 1 GB module - not just one 1 GB module, won't work - you need 1 GB module in each slot) and the two should be purchased as a "kit" meaning they'll be exactly the same.


    You can also run Snow Leopard on it - it's an excellent OS; however, any computer with more memory would be better.


    So, you can buy a new one which will already have Lion installed (but no install disks) or a used or refurbished one that still has Snow Leopard (with install disks) and you can upgrade it to Lion.

  • emmigomag Level 1 (0 points)

    ok if i have snow leopard os can i get icloud with snow leopard?  i have mobile me now but my understanding is it will be discontinued soon thats why im tring to upgrade

  • John Galt Level 8 (45,985 points)

    Snow Leopard should run fine:



    Mac OS X v10.6 Snow Leopard system requirements

    To install Snow Leopard for the first time, you must have a Mac with:

    • An Intel processor
    • An internal or external DVD drive, or DVD or CD Sharing
    • At least 1 GB of RAM (additional RAM is recommended)
    • A built-in display or a display connected to an Apple-supplied video card supported by your computer
    • At least 5 GB of disk space available, or 7 GB of disk space if you install the developer tools


    For more information, see the Mac OS X 10.6 Snow Leopard Installation and Setup Guide.


    Buy Snow Leopard here: http://store.apple.com/us/product/MC573Z/A


    Unfortunately iCloud needs Lion


    At six years the Core Duo is getting a bit dated. With incessant website changes constantly placing greater demands on hardware, your iMac will have a hard time keeping up.

  • emmigomag Level 1 (0 points)

    can you tell me if i don't have mobile me or icloud what does do to my system other than i loose my email ?

  • babowa Level 7 (29,965 points)

    If you read this:




    You might be able to access iCloud with Snow Leopard, but it has to be via your browser and the icloud website.