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

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Tom's Hardware

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A Reddit user successfully shunt-modded an Asus ROG Zephyrus M16 laptop with an RTX 4090 GPU, boosting its power to 240W from the original 150W. This modification led to a 20% performance increase, allowing the 4090 to outperform the mobile RTX 5090 in various benchmarks. Despite some minor performance variations in specific tests, the overall improvement compared to the 5090 was around 3.5%, and nearly 20% compared to other 4090 GPUs in the same laptop model. The user managed the increased heat with thermal upgrades and undervolting, achieving a balance between power, performance, temperatures, and noise.

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