8 Pin Pcie - GoKawiil

Reddit modder builds quad 8-pin adapter to replace RTX 5090's 16-pin connector

Reddit user DallasGrave created a custom power-conversion kit that bypasses Nvidia's 16-pin (12VHPWR/12V-2x6) connector on the RTX 5090, soldering a harness directly to the card's PCB power rails and routing power through four standard 8-pin PCIe connectors instead. The four 8-pin connectors together match the 16-pin connector's 600W capacity while spreading current across more, larger, and more widely spaced pins.

tomshardware.com · 2026-10-17

TecLab mods RTX 5090 to run on triple 8-pin connectors, sustains 900W

YouTube modding channel TecLab rebuilt a Galax RTX 5090D HOF OC LAB XOC by removing its dual 16-pin power connectors and soldering in three 8-pin PCIe connectors directly to the power regulators, rewiring sense pins to remove power limits. Using liquid cooling, they pushed the card from 400W up to 900W, drawing over 120A and hitting clock speeds of 3,400 MHz, all through hardware changes alone with no BIOS or software tuning.

tomshardware.com · 2026-09-10