QuasarZone tests show the 16-pin power connector on a GeForce RTX 5090 reaches temperatures above 90 degrees Celsius at peak power consumption near 650W.
Reddit user u/DallasGrave shared a fix for his RTX 5090, one of the best graphics cards, whose 12VHPWR connector was overheating, along with an image of a module screwed onto the back of his GPU.