First screen, captured 2 days ago. Hover to scroll the page, or open the video.

GPU-unlock: FP/BF16 instruction issue rate on Nvidia 3000's cards

What HN thinks

Nvidia's half-rate tax meets a buffer overflow, and a room full of hot 3090s cheers.

Legit unlock, real but variable gains
Users report speedups from 6% to 30-50% depending on card, workload and power limit; prefill and training benefit most, decode much less.
Power and cooling caveats
Bigger gains often need raised power limits and better cooling, though some say it helps even at stock limits since the card shifts down the frequency curve.
Newer cards unlikely soon
Hopper and Blackwell (50 series, 5090) use a different secure boot chain, so this approach won't carry over; 40 series is in progress via forks.

Consensus: The unlock works on Ampere cards via a booter firmware exploit and the UEFI-style approach beats patched drivers, but real-world gains are workload-dependent and smaller than headline numbers.

Recommended in the comments

gpu-unlock-ada ↗ (tool): Lets 4090 and 4070 Ti Super owners get the unlock now; one user saw 30% lower wall-clock time.
open-gpu-kernel-modules (aikitoria fork) ↗ (library): Restores disabled card-to-card P2P speed and stacks with this unlock.
turing-unlock ↗ (tool): Brings the same idea to older RTX 20 series cards.
Windows-GPU-UNLOCK ↗ (tool): Offered for Windows users.

Summarised by Claude from the comment thread 1 day ago.

Points: 319
Comments: 74
Best rank: #12
Posted: 2026-10-24 by fragebogen
Category: Hardware

nvidia gpu rtx-3090 linux-kernel-module bf16 firmware gpu-unlock

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Captured 2 days ago. Click for the whole screenshot.

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