RZ_1911 t1_iwcfii5 wrote on November 14, 2022 at 4:46 PM

Reply to comment by RocketTaco in 12VHPWR adapter of the GeForce RTX 4090 - Two manufacturers, new details and exclusive information by MorgrainX

It’s not THAT MUCH overspecified .. stable limit is somewhere 75w per rail (210w per 8p rail ) . With 100w (300w per rail ) even old 8p melted . Now imagine - they shrinked contact area for 1/2 of old 8pin connector.. and said - 100w per rail and 600w per connector- guaranteed 🤣

RocketTaco t1_iwcid9p wrote on November 14, 2022 at 5:05 PM

Mini-Fit does not melt at 100W unless significantly damaged. Molex's own spec for eight circuits onto a PCB is 10A per circuit at 16AWG (120W) for 30C temperature rise over ambient. You could run 360W on 3+3 pins before you even brush up against the safety margins which, again, are given with a third more heat since they assume all eight circuits are carrying load. Conversely, I've seen cards with two 8p connections burn one up at under 200W loading, because the receptacle was bent and didn't make proper contact.