Researcher reports unlocking A100 features on Nvidia mining cards

A security researcher reports using brief voltage disruptions to defeat restrictions on Nvidia's GA100 chip and unlock memory and computing features on CMP 170HX mining cards. The researcher says an 8 GB card was converted into effectively an A100-80G and disclosed the findings to Nvidia's product security team before publication. The technique permits permanent changes to chip fuses that govern disabled features. Available capacity depends on functioning hardware and installed memory. The researcher reports unlocking NVLink and PCIe Gen4, but has not specifically tested the claimed unlocks for video decoding, JPEG processing or partitioning a GPU into multiple instances.