CoreImage and the VRAM

Discussion in 'macOS' started by Rubin421, Jan 5, 2005.

  1. Rubin421 macrumors member

    Dec 24, 2004
    New York
    As you know, Tiger's CoreImage technology is said to require at least 64 MB of Video RAM. But here's my question: what happens if you only have, say, 32 MB? Is CoreImage software-emulated, of simply turned off?
    This is of high importance for me, as I am just about to buy an iBook, and would like to make sure I'll be able to fully enjoy the features of Tiger when it's out.
  2. robbieduncan Moderator emeritus


    Jul 24, 2002
    I believe that this will force all of the CoreImage video or image units to be rendered by the main CPU (i.e. Software Emulated).
  3. Rubin421 thread starter macrumors member

    Dec 24, 2004
    New York
  4. oingoboingo macrumors 6502a


    Jul 31, 2003
    Sydney, Australia
    Even if you could somehow stick 128MB of VRAM in your iBook, it still wouldn't help. The ATI Radeon 9200 Mobility GPU in the current iBook lineup is not supported by Core Image. This means that Core Image-related effects will need to be processed by the iBook's CPU, or scaled back. The list of GPUs supported by Core Image is listed here:

    In a nutshell, these GPUs are:

    ATI Radeon 9800 XT
    ATI Radeon 9800 Pro
    ATI Radeon 9700 Pro
    ATI Radeon 9600 XT
    ATI Radeon 9600 Pro
    ATI Mobility Radeon 9700
    ATI Mobility Radeon 9600
    NVIDIA GeForce 6800 Ultra
    NVIDIA GeForceFX Go 5200
    NVIDIA GeForceFX 5200 Ultra

    As you can see, currently shipping iBooks and eMacs are off the list.
  5. Rubin421 thread starter macrumors member

    Dec 24, 2004
    New York
    Bottom line: I should get a PB.
    Right? But the PBs' prices are about to drop!
  6. hob macrumors 68020


    Oct 4, 2003
    London, UK
    CoreImage just runs real slow on my PowerBook - it's got a 32MB graphics card (that'd be my problem) but lots of RAM...

    It just kinda sucks how I feel like my one year old computer is already out date!! But that's technology!

  7. johnnyjibbs macrumors 68030


    Sep 18, 2003
    London, UK
    Oh great - that's the exact same setup that I've got. Never mind, I always thought it would run pants when my graphics card was lowest on the list...
  8. BWhaler macrumors 68030


    Jan 8, 2003
    This is disappointing. I would like to get a mini--just for the hell of it--and hook it up to my TV. And I am not one of these people who demands the best tech at any price point--those people are idiots.

    But I would want Tiger to work as promised on any new Mac. Sure, not as fast as my 2.5PM, but at least let me have all of the eye candy.

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