Nvidia 8500M series is the defective chipset just announced

Discussion in 'MacBook Pro' started by jjahshik32, Jul 5, 2008.

  1. jjahshik32 macrumors 603

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    #1
    The nvidia 8500m series is the defective gpu, cant link it as im on the iphone but just google it and there are some articles just released regarding this issue.

    Is something to do from the substrates of the pcb by a certain company in the 8500m roughly.
     
  2. Sesshi macrumors G3

    Sesshi

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    #2
    That seems to put the lie to the 'very large number of notebooks' news. I can't actually name a single machine with an 8500M.
     
  3. kockgunner macrumors 68000

    kockgunner

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  4. jjahshik32 thread starter macrumors 603

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    #4
    not sure, I think its just a specific part thats defective thats used in the 8500M series only though.
     
  5. zioxide macrumors 603

    zioxide

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    #5
    I think you're thinking of the 8700 being an overclocked 8600.
     
  6. ben.mcmahan macrumors member

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    #6
    http://www.digitimes.com/bits_chips/a20080704PD210.html

    Nvidia contract makers in Taiwan low-key over defective chip reports

    Ingrid Lee, Taipei; Steve Shen, DIGITIMES [Friday 4 July 2008]

    Nvidia's Taiwan-based graphics chip contract makers are being low-key after the US chip designer informed investors on July 3 that will take a charge of US$150-$200 million related to expenses stemming from issues discovered with die/packaging materials used in previous generation notebook products.

    With Nvidia indicating that the problem is due to the packaging material used with some of its chips, which was compounded by the thermal design of some notebooks, industry sources in Taiwan believe the problem is most likely related to either the solder bumping process used by one (or more) of Nvidia's manufacturing partners or the company's PCB substrate supplier(s).

    Sources at foreign institutional investors in Taiwan indicated that the defective products were Nvidia Geforce 8500M-series graphics chips launched in 2007, and that the problem was caused by related bump processing. Taiwan Semiconductor Manufacturing Company (TSMC), Advanced Semiconductor Engineering (ASE) and Siliconware Precision Industrial (SPIL) all provide bump processing services to Nvidia.

    When ask for comment by Digitimes TSMC declined citing client confidentiality, while ASE and SPIL both claimed to know nothing about the issue because the defective chips are older generation products.

    On the other hand, some industry insiders believe the problem might have been caused by PCB substrates supplied by Nay Ya Print Circuit Board (NPC) or Phoenix Precision Technology (PPT).

    The sources speculated that the problem could be that the green paint used by NPC in PCB production might have lower than expected heat resistance, or that the adhesiveness of ABF (Ajinomoto Build-up Film)-based substrates produced by PPT might not be strong enough.

    However, NPC and PPT both refuted the speculation saying their PCBs are not the components at fault.
     
  7. alphaod macrumors Core

    alphaod

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    #7
    So no one is claiming responsibility because they don't want their business questioned in the future, but they'll probably pay up nonetheless in quiet.
     
  8. Sesshi macrumors G3

    Sesshi

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    #8
    I dunno about this. As I pointed out I'd be very surprised if they shipped tens or hundreds of millions worth of 8500M's.

    Why sheepishly announce a major issue for a GPU that was in almost no notebooks? I'm going to put my conspiracy theorists hat on and say that if the 8500M story is directly from NVidia, they let their lowest selling GPU be the public scapegoat while hiding the problems with the other 8xxx series mobile GPU's.
     

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