With Nvidia's RTX 5090 selling for around $8,500 and hard to replace, a Reddit user known as DallasGrave has shown off a custom power-conversion kit designed to protect the card from the 16-pin connector failures that have plagued recent GPUs. The kit mounts directly above the card and uses a harness soldered to the PCB power rails, bypassing the 16-pin (12VHPWR/12V-2x6) connection entirely. Instead, it draws power through four standard 8-pin PCIe connectors, which together can deliver the same 600W maximum as the 16-pin connector.
The key advantage is electrical and thermal. The 16-pin connector concentrates a 50A load across six power pins, each carrying about 8.33A near its 9.5A rated limit. The quad 8-pin setup uses 12 power pins, so the same 50A load works out to roughly 4.17A per pin. That lower current density reduces wire and terminal temperatures and should lower the risk of heat-related damage, though 8-pin connectors are not immune to melting either.
The kit can be used as the sole power source or alongside the native 16-pin connector as a parallel load spreader, and it tricks the sense pins into recognizing the full 600W. DallasGrave says they have tested it up to 800W with a shunt mod. The creator is preparing models for nearly every RTX 5090 variant, including Nvidia's Founders Edition, but has not yet revealed pricing, release date, or installation logistics.