GeForce RTX 5090 Laptop GPU shunt mod increases performance by up to 40% — 175W TGP boosted to 250W to unlock extra performance

GizmoSlipTech has recently shared a fascinating modification to the GeForce RTX 5090 Laptop GPU. By implementing a shunt mod to elevate the TGP (Total Graphics Power) from 175W to 250W, the YouTuber claims they achieved a performance increase of up to a whopping 40% in the mobile Blackwell flagship.

Shunt mods are popular with overclockers because they allow for increasing the power limit on the graphics card, enabling higher clock speeds. While suitable for testing, like GizmoSlipTech’s experiments, shunt mods are not recommended for regular use, as exceeding the graphics card’s rated limits always involves risks of damage. Furthermore, you need electronics knowledge to perform these tasks, so adding extra shunts isn’t as simple as pouring more milk on your cereal.

The GeForce RTX 5090 Laptop GPU utilizes the same GB203 silicon as Nvidia’s high-end Blackwell graphics cards, including the GeForce RTX 5080 and GeForce RTX 5070 Ti. The GeForce RTX 5090 Laptop GPU features 10,496 CUDA cores, just a few less than the GeForce RTX 5080. Logically, being a mobile part, it also has lower clock speeds that are limited by a lower power limit. Typical GeForce RTX 5090 Laptop GPUs feature a TGP between 95W and 150W, plus an additional 25W from Nvidia’s Dynamic Boost technology. By adding a shunt mod, the YouTuber increased the TGP to 250W, which is 43% higher than the stock value.

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GizmoSlipTech performed the shunt mod on an Eluktronics Hydroc 16 G2 gaming laptop with a Core Ultra 9 275HX and a GeForce RTX 5090 Laptop GPU. The device also has 48GB (2x24GB) of DDR5-7200 memory. The reviewer utilized a variety of different settings, which you can see in the YouTube video.