Report: All Nvidia G84/G86 Chips Defective

It appears that Nvidia’s notebook chips aren’t the only ones that could be defective, if an Inquirer report is to be believed.

According to sources, the entire line of G84 and G86 chips all suffer from the same defect, regardless of desktop or notebook application. The chip generation utilizes the same Application Specific Integrated Circuit (ASIC), which supposedly has an issue with an “unnamed substrate or bumping material, and it is heat related.”

As expected, Nvidia is staying mum on the topic, but analysts are spilling various details. One story is that HP was the recipient for the majority of the defective chips – only limited to a specific batch. Further explanation reveals that it was isolated to an end-of-life batch that used a different bonding/substrate process.

The story with HP didn’t fly with the Inq, as it believes that no changes in process were made throughout the chip’s cycle, leading to suspicions that the defect is widespread. Furthermore, Dell responded quickly to failure reports by quickly issuing a BIOS update that pumped up the cooling for the vulnerable chip parts, which clearly shows that the problem ventured beyond just HP. Now HP has also a new BIOS to run the fan at all times at the expense of battery life.

While evidence may point to only notebook chips being afflicted, one theory is that notebook chips go though more stress than their desktop counterparts. Notebooks are power cycled more often, and by extension the GPUs go through more heat cycles – quickly exposing the defect. GPUs in notebooks may also be harder to cool, with less space for elaborate heatsinks and fans.

Unfortunately for owners of Nvidia G84 and G86 hardware, this could just be the tip of a very troubled iceberg.

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  • random1283
    I'm not surprised by this. It makes sense that if the mobile chips on that architecture fail so should logically the desktop chips. I have also experienced it first hand. My 8600gt (G84) Gigabyte Silent pipe, Started Making noises from the GPU itself after 1 month and after 2 months it broke completely. I was very disappionted
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  • sphericaline
    random1283I'm not surprised by this. It makes sense that if the mobile chips on that architecture fail so should logically the desktop chips. I have also experienced it first hand. My 8600gt (G84) Gigabyte Silent pipe, Started Making noises from the GPU itself after 1 month and after 2 months it broke completely. I was very disappionted


    Last time I checked silicon doesn't make noise. You "first hand experience" had to be a mechnical issue and thus not the same problem as the one mentioned here.
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  • juvealert
    So does this mean a product recall ?


    Well i own an XFX 8600GT @ 620Mhz (over clocked by manufacture)touch wood its still ok...

    But everest give me tempratures of between 50 - 55 degress celcius. Is this one of the issues?
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