Story perspectives
NVIDIA Unveils GPU Shift: NV_PMC_BOOT_42 for Rubin
10/27/2025
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Story summary
- NVIDIA is replacing NV_PMC_BOOT_0 with NV_PMC_BOOT_42 to identify GPU architecture for the Rubin architecture.
- Nova kernel patches show the switch and simplify boot selection for Turing and later GPUs, removing 33 lines.
- NVIDIA engineer John Hubbard confirmed the shift and noted a commitment to open-source development.
- Rubin is planned for volume production in late 2026, signaling a major evolution in NVIDIA's GPUs.
