Hack removes firmware crippling from NVIDIA graphics card

March 18th, 2013, 21:56 Posted By: wraggster

If hardware manufacturers want to keep their firmware crippling a secret, perhaps they shouldn’t mess with Linux users? We figure if you’re using Linux you’re quite a bit more likely than the average Windows user to crack something open and see what’s hidden inside. And so we get to the story of how [Gnif] figured out that the NVIDIA GTX690 can be hacked to perform like the Quadro K5000. The thing is, the latter costs nearly $800 more than the former!
[Gnif] wanted the card for gaming and to support multiple monitors. It has no problem driving up to three screens under Windows. But the Linux drivers only allow this on the professional counterpart to the GTX690, the Quadro K5000. It turns out that the card responds to a device ID as assigned by a series of analog values. These can be tweaked by swapping, yanking, or adding resistors in just the right places. As with that Agilent multimeter unlock of his which we saw a few days ago, he somehow managed to figure out the secret sauce that unlocks the power hidden in this card.
http://hackaday.com/2013/03/18/hack-...graphics-card/

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