Graphic Performance bad in vista on imac

Discussion in 'Windows, Linux & Others on the Mac' started by darksoul, Dec 12, 2008.

  1. macrumors newbie

    Dec 12, 2008

    i've installed Windows Vista Ultimate with Bootcamp and it gives my Graphics Card an performance index of only 1.0. I've installed the Drivers from my Leopard-CD and later the latest catalyst-Drivers from Ati, but it didn't get better.
    this is my system:
    Modellname: iMac
    Modell-Identifizierung: iMac7,1
    Prozessortyp: Intel Core 2 Duo
    Prozessorgeschwindigkeit: 2.4 GHz
    Anzahl der Prozessoren: 1
    Gesamtzahl der Kerne: 2
    L2-Cache: 4 MB
    Speicher: 4 GB
    Busgeschwindigkeit: 800 MHz
    Boot-ROM-Version: IM71.007A.B03
    SMC Version: 1.21f4
    Graphics Card is the radeon 2600HD

    Anyone an idea, what i can do to get a better graphic performance?

    thanks for your help,

  2. macrumors 68000


    Mar 28, 2007
    Yes, definitely something wrong there. You should be getting
    more than 1.0 with that setup.

    Can you run 'dxdiag.exe' and get back to us with the results?

    You just need to type 'dxdiag' in the start menu search box.
    Use the 'Save All Information' button to get a text file of the
  3. thread starter macrumors newbie

    Dec 12, 2008
    Thanks for your answer.
    I have attached the txt-file from dxdiag.

    Attached Files:

  4. macrumors 68000


    Mar 28, 2007
    It seems to be mostly what I would expect.
    However, I notice that you have this:

    DDI Version: 9Ex

    Your card does support DirectX 10. You may
    have the problem noted here:
  5. thread starter macrumors newbie

    Dec 12, 2008
    ahh, interesting Problem, but i can ignore that.
    Now i have an Index for graphics at 5,3. The 1.0 was with the standard vga adapter. I didn't refresh it after installing the driver.
    But at games, i don't get the performance, i expexted. Z.B. NFS Undercover.
  6. macrumors member

    Oct 22, 2008
    The reason why it says 1 is because the index "scanned" your performance before you had display drivers installed.

    You can make vista make another scan if you want it to update the index.

    But anyways, that vista performance index is utter crap.

    Ah nevermind, didnt read the last post.

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