Mining Card Gets A Desk Job

The real news

The story, straight

Computer memory holds the data a chip works on. But having memory installed doesn't mean the computer lets you use it.

Imagine buying a cupboard with most shelves locked.

In a November 10 blog post, a researcher demonstrated hardware modifications that make NVIDIA CMP 170HX 8 GB mining cards behave like an A100-80G, a chip used for demanding computing, including AI. These are modified mining cards, not retail A100s.

On most of the cards she tested, usable memory reached 80 GB. Of 10 examined cards, 1 had only 64 GB usable.

Unlocking restrictions cannot repair defective hardware.

The trick uses brief voltage dips to disrupt the chip's startup checks, allowing settings that restrict existing hardware to be rewritten. The cupboard already had the shelves; electricity briefly distracted the bouncer.

This is not a download. It needs a glitcher board, 2 soldered connections, 1 removed resistor and 1–48 hours of repeated power cycling per card.

Your upgrade button is now a soldering iron.

She disclosed the findings to NVIDIA's product security team before publishing. Another researcher independently discovered the same issue.

The useful lesson: advertised capacity and installed hardware can differ. That does not make every mining card a guaranteed bargain.

Source: https://blog.kate.land/posts/using-voltage-glitching-to-unlock-the-a100/

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