The GeForce RTX 4090 laptop GPU has recently achieved remarkable performance upgrades, reaching levels comparable to the RTX 5090 following an innovative shunt mod. This modification allowed the GPU to unlock its full potential, leading to significant performance gains.
Unlocking Performance: Redditor Modifies RTX 4090 Laptop GPU with a 1m Ohm Resistor
Shunt modding is becoming increasingly popular among gaming enthusiasts as a method to maximize a GPU’s capabilities. By enabling the GPU to draw more power, users can achieve higher performance benchmarks. The process involves utilizing a shunt resistor, which is integral to the GPU’s power management system. By strategically adding a resistor to lower the total resistance, users can trick the GPU into believing it uses less power.
A Reddit user known as u/thatavidreadertrue executed this mod on his RTX 4090 laptop GPU housed in the Zephyrus M16 GU604VY gaming laptop. The user reported that he affixed a 1m Ohm resistor atop the existing 5m Ohm resistor, effectively reducing the overall resistance to approximately 0.83m Ohm. This alteration led the GPU to misinterpret its power consumption, reporting around 40-45W, while in reality, the power draw soared to nearly 240W—an increase of 1.6x.
However, the surge in power consumption necessitated adequate thermal management. The user replaced the old liquid metal thermal interface material with Honeywell PTM 7950, renowned for its superior heat conductivity. Additionally, he upgraded the VRM thermal pads using Upisren UX Pro Ultra pads. Such enhancements were crucial as the Zephyrus M16’s cooling system has limitations with managing heat generated under higher power conditions.
While specific temperature readings post-modification weren’t provided, the user shared impressive benchmark results. Comparing his shunt-modded GPU configuration against both the original setup and the GeForce RTX 5090 laptop GPU, he noted a performance increase of up to 35.5%.Most 3D Mark tests showed over a 20% improvement, solidifying the effectiveness of the mod.
It is important to consider that such modifications carry inherent risks. Users who attempt shunt modding must be vigilant about heat management to prevent overheating, which could lead to severe hardware damage. Furthermore, engaging in this type of modification typically voids warranty, making it crucial for individuals to weigh the benefits against potential drawbacks.
For further insights, check the original discussion on Reddit.
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