Is my graphics card dead?

Discussion in 'Mac Pro' started by MotleyPete, Jan 26, 2011.

  1. MotleyPete macrumors regular

    Jun 9, 2008
    I use 3D modeling applications and do a lot of graphics malarkey on my Mac Pro (early 2008 model). The other day while doing just that my Mac appeared to freeze & the display showed lots of zig zagging, dotted, coloured artifacting.


    I restarted the thing & it looked fine again, but after a few minutes, the same thing happened. Now I can't even boot up. It's stuck on the Apple boot screen with vertical, dotted, purple lines on the screen.


    Oddly, by using the function keys I can invoke iTunes & hear tracks, so the system has actually loaded, I just can't see it. I can also shut down by using the ctr-alt-cmd-eject keystroke.

    The graphics card is an NVIDIA GeForce 8800 GT
    The Mac Pro is the early 2008 model

    Can anyone confirm this is my graphics card before I attempt to replace it & if so, can anyone recommend any suitable replacement cards?

    PS, I have no apple care, warranty is out, have reset PRAM & SMC as first port of call.
  2. DeeEss macrumors 6502a

    Jan 17, 2011
    I've had similar things happen, for me it wasn't good being the logic board (well at least that's what apple told me) of a macbook pro. Even out of warranty they were good enough to replace it as it had happenned a couple of times. Sorry to say it's a costly replacement.

    In this case it could very well be the graphics card which wouldn't be so costly.
  3. donbach macrumors newbie

    Nov 15, 2010
    From your description and screen images, I experienced similar occurrences (herringbone artifacts/screen freeze/loss of display) twice with my late 2006 imac. In both instances the video card needed replacement, not the logic board.
  4. MacBoobsPro macrumors 603


    Jan 10, 2006
  5. *45* macrumors newbie

    Jan 26, 2011
    I had this same problem on my 1st gen mac pro, and it got worse. Now the monitor doesn't recognize that it is hooked up to the computer. Figuring that it is the video card, any recommendations for replacing the NVIDIA GeForce 7300 GT graphics card with 256 MB of DDR2 SDRAM and dual-display support? Thanks!
  6. goMac macrumors 603

    Apr 15, 2004
    For the Macbook Pro, graphics card failure requires a replacement of the logic board.

    So yes, it's likely the graphics card.
  7. walterwhite macrumors 6502


    Jan 22, 2011
    South Central PA
    I thought it was a MacPro... not the portable.
    If the card is the big red one with the curvy anime chick on it... I think its under warranty/recall
  8. goMac macrumors 603

    Apr 15, 2004
    The person I was replying to was talking about his Macbook Pro.

    The OP stated he has the GeForce 8800, which I don't think has an open recall exactly, but is known to be a bad card. He should get it exchanged.

    Just be aware that when my 8800 died I had to bring the entire machine in. : grumble :

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