Accidentally Overclocked my Radeon X1900 now mac is crashing

Discussion in 'Mac Basics and Help' started by Funkfish, Nov 8, 2007.

  1. Funkfish macrumors newbie

    Nov 8, 2007
    Hey guys so I have a bit of a dilemma.

    Basically when I first got my Quad 2.66 Mac Pro I was all amped to finally play some windows games on my mac. This was at the beginning of bootcamp and driver support was pretty poor or so it seemed. The included bootcamp drivers weren't working well with my Radeon X1900XT video card. So I installed the Catalyst drivers from ATI and of course it has an option for overclocking which I turned on. Things we're fine for a while but then games started crashing I thought it was a windows thing, but then it started happening on my mac. I looked at the catalyst drivers and they think that the card isn't overclocked so there isn't anything to turn down. So I disregarded my problem as a hardware problem.

    Then today I read an article about the new iMacs running too hot and crashing displaying graphical distortions similar to an overclocked video card......similar to my mac pro.

    So now I'm pretty sure it's my card running too hot because these are the symptoms.

    Games on loooowww res are fine, games on hi res crash and shut down the computer or freeze it. Switching to full screen in quicktime with HD video crashes it. Graphical distortions in the UI in regular programs. ect

    So what can I do to fix this? I was thinking of just using my apple care, but I think if they find out that I overclocked the card I'm screwed. I should also say that I have recently formatted my harddrive and erased the windows partition and upgraded to leopard, If I need to put windows back on I can, but I'd like to avoid that. is there a simple fix that I can do like resetting the pram or what?
  2. Eidorian macrumors Penryn


    Mar 23, 2005
    And that's where the similarities end.

    The X1900 has been know to overheat in the Mac Pro since last year. I'd give Apple a call.
  3. jellomizer macrumors 6502


    Sep 12, 2006
    Upstate NY
    One of the dangers of overclocking is the chips heat up beyond their recomended limits. You may have damaged the card... Sorry...

    You may need a replacement Video Card... But first. I would make sure the driver has over clocking turned off FIRST! Then Possible reinstall windows...

    That may fix the problem.
  4. topgunn macrumors 65816


    Nov 5, 2004
    You almost certainly DID NOT damage your card. The catalyst drivers are smart enough not to let you overclock to a ridiculous amount without first testing the settings. Even if you did manage to overclock your video card five times over, the GPU itself would shut itself down before permenant damage was done. This technology has been mainstream in CPUs and GPUs since the Pentium III.

    Eidorian is right. The X1900 overheating is a known issue with Apple. After calling them, they will likely send a new card your direction.
  5. trainguy77 macrumors 68040

    Nov 13, 2003
  6. MKerr64 macrumors newbie

    Feb 6, 2008
    I had the same problem with my Mac Pro
    all i had to do was mod the graphics card.

    i just got the ThermalTake TMG at1 and swapped it with the stock
    i just had to cut the wire from the original and sodder + heat shrink it and it works perfectly

    you do not feel the hot air rushing out but the cooler is huge and keeps the card really cool

    hope that works for you if you plan to do it

    if you want photos and somewhat of a tutorial how to do it, PM me and i will post something

    Here is the tutorial:

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