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Retro 8800 GTX from EVGA artifacts

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    Retro 8800 GTX from EVGA artifacts

    Hello,
    I need help identyfing what is broken on this GPU - GPU core or VRAM. Let's start with what I did and know so far:
    - disassembled, added missing SMD capacitors from same GPU
    -(If anybody knows what Q518 is and would share this information I would be very grateful)
    - artifacts during Windows booting are blue vertical stripes, I can take a photo if that would help
    - artifacts in Windows are yellow-ish horizontal lines
    - in BIOS/ text on black screen text gets extremely garbled
    - GPU-Z doesn't show GPU or VRAM frequency
    - GPU error 43 in Device manager
    - after baking on bottom only preheater for ~10 minutes @ 135 degrees - ~80-90 is what TC shows on PCB, probably even less on the core, since it has a giant IHS, artifacts were gone for a few minutes, then screen went blank and artifacts are back


    From what I understand 90 degrees on the core is not really enough to bring it back to life, even for the shortest time, but RAMs don't operate on such temperatures, so maybe modules from bank 0/1 are broken?

    #2
    Re: Retro 8800 GTX from EVGA artifacts

    2 things that I forgot to mention:
    - does anybody still have an older Nvidia MATS version? I have tried 295 from vlab, but I can't get anything to work, even other modules on modern 1080Ti.
    - in case memory went bad: the VRAM chips present on this GPU are extremely expensive, but I found cheaper alternative, still Hynix, still rated at correct frequency (original 1000, these 900; VBIOS reports 900), marking is HY...-FP1 vs HY...-FP11, can I replace all chips with these cheaper ones, or do I need to buy 1 or 2 of these expensive and replace only broken?

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      #3
      Re: Retro 8800 GTX from EVGA artifacts

      stripes is hard fault on memory. mostly because of bad track or vcc

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        #4
        Re: Retro 8800 GTX from EVGA artifacts

        Yep, that was exactly it. I feel like a magician - broken VRAM chip @ bank 1, module 1.

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