Voltage glitching unlocks 80GB VRAM and 126 SMs on NVIDIA CMP 170HX
Yarukiless-cat · reddit · 2026-11-15
A Reddit user successfully voltage-glitched an NVIDIA CMP 170HX mining card to unlock its full 80GB VRAM and 126 SMs, with an nvidia-smi screenshot showing 81920MiB.
- Implemented five days after the technique surfaced, using a pico board for the glitch injection
- The script for restricted write-access was written by Astra (an AI); nearly 15 hours of work total
- A second card is planned
Effectively turns cheap mining cards into large-VRAM accelerators approaching A100-class memory.
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