A hardware enthusiast known as DallasGrave has developed a custom PCB modification for the NVIDIA GeForce RTX 5090, replacing the standard 16-pin 12V-2x6 power connector with four traditional 8-pin PCIe power interfaces. The modification aims to distribute current across more wires to reduce thermal and electrical stress on individual connection points.
According to data provided by the modifier, the setup reduces the current per wire by nearly half at a 600W load. Testing showed a temperature decrease of approximately 20 degrees Celsius compared to the original configuration. In a separate test with the power limit removed, the module operated at an 800W load with a reported PCB temperature of 45 degrees Celsius.
The four 8-pin connectors provide a combined power capacity of 600W, which aligns with the RTX 5090's standard board power of approximately 575W. Unlike previous adapter solutions that supplement the 16-pin port, this design creates a complete, independent power path that bypasses the original connector entirely.
The developer is currently working on versions for various RTX 5090 models, including the Founders Edition, and plans to create custom backplates. Future steps include releasing video demonstrations, conducting 24-hour load tests, and potentially launching installation services in Las Vegas by December.
This modification requires professional soldering and hardware changes, which likely void the manufacturer's warranty. The developer has not yet finalized pricing or commercial plans, and the long-term reliability of the design under various conditions remains to be independently verified.
