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Using voltage glitching to unleash the A100 in my mining card

Using voltage glitching to unleash the A100 in my mining card

lae

Comments (51)

  • htrp
    amazing to think there was a time (literally not too long ago) where you would throw 80 GB of HBM onto a chip and turn 90% of it off
  • amelius
    But what if nvidia used those fuses because an A100 had too many fabrication faults so it could only be a cheaper mining card?(which is the more likely scenario because they can make much more money on enterprise/datacenter products, see DRAM)
  • SillyUsername
    I just wish they had something like this for older Tesla p100s, p4s...
  • roger_
    Glad I jumped on these cards, excited to give this a try!Hard to believe $1k was a deal a few months ago (and $200 before then).
  • mr_roboto
    Selling anything that has been purposely hamstrung to limit available capabilities for market reasons seems morally repugnant beyond words. I understand walling off die defects but if it is functional that is disgusting.
  • mitxela
    It's utterly crazy that anyone outside Nvidia knows any of this, much less all of it. Has there been a years long public reverse engineering effort that I didn't hear about until now?
  • Savlume
    [flagged]
  • samlinnfer
    Before you get too excited about the CMP 170HX, the prices have already skyrocketed and that card doesn't have a cooler on it. It is designed for a server cooler that sounds like a jet engine. Also most of the 80GB vram unlocks have bad RAM and that is the reason they were locked in the first place, otherwise they would have became A100s.Anyways, that's what I tell myself as I taste my bowl of sour grapes.
  • tintor
    Finally, I can download more VRAM!
  • Kevin_Flynn
    The ebay auction headlines have already rewritten themselves.
  • mschuster91
    > In one of the most extreme manifestations of product segmentation, the CMP 170HX, an Ethereum mining card with nominally 8 or 10 GB of application-exposed framebuffer capacity, actually comes with, respectively, ~80 and ~40 GB of HBM onboard!wtf, it seems RAM truly was too cheap back then...
  • ForHackernews
    >an Ethereum mining cardWait, so does this unlock it to actually do something useful, or just "mine" marginally more shas?
  • gwbas1c
    > In a properly secured design, a blown fuse should always induce a more restrictive state, because a blown fuse cannot be unblown in an economically feasible way.I disagree: If there's any risk that the fuse will blow with normal usage, then a blown fuse means a defective product.
  • low_tech_punk
    What if the author turn out to be Alice Huang?Joke aside, good investigation and blog debut, kate!