RTX 4090 laptop GPU gets 20% performance boost after shunt mod, beats the mobile RTX 5090, on average — reduced resistance boosts power to 240W

Tom's Hardware
Oct 28, 2025, 6:45 am127 pts
A user on Reddit shunt-modded their Zephyrus M16's RTX 4090 laptop GPU, which led to a 20% bump in performance compared to stock, while even beating RTX 5090 mobile on average. This was achieved by just stacking one resistor atop the existing one to trick the GPU into consuming way more power than it thinks it…

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