Using voltage glitching to unleash the A100 in my mining card
Summary
This article provides a deep-dive into a hardware-level voltage fault injection (VFI) technique aimed at GA100 GPU dies to unlock CMP 170HX mining cards into A100-like configurations. It explains the fuse architecture (FF, RIR, IFF), how fuses control functionality, and how SBFE can be bypassed via VFI to enable full framebuffer and SM unlocks, with practical glitching steps and observed outcomes. The content highlights significant implications for GPU security, firmware protections, and potential mitigation strategies.