• 0 Posts
  • 60 Comments
Joined 6 months ago
cake
Cake day: August 23rd, 2024

help-circle


  • The problem seems to be load balancing, or lack thereof. A German guy on YouTube noticed that his cable got up to 150°C at the PSU end, due to one wire delivering 20 or 22 amps, while the others were getting a lot less pumped through them. 22 Ampere is pretty much half the power draw of the card, through one wire instead of three if the load was properly balanced between them. That’s why it ran so hot and melted to shit.

    If you’ve ever worked on your car’s 12 V electrics system, you’ll know how thick the wires (and corresponding connector sizes) are for things like window defrosters that will run through a 20 or 30 amp fuse.




  • Schmuppes@lemmy.todaytolinuxmemes@lemmy.worldIt broke again
    link
    fedilink
    arrow-up
    24
    arrow-down
    2
    ·
    edit-2
    10 days ago

    Seems to be less about the connector, but more about load balancing. The German guy who had 150°C connectors at the PSU side also measured current draws. One cable was doing 22 A (so almost half of the 5090’s total consumption) while the other 7 five were just chilling.