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Comment on Handful of users claim new Nvidia GPUs are melting power cables again

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.

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Kazumara@discuss.tchncs.de ⁨2⁩ ⁨months⁩ ago

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.

Apparently the reference design only has one current shunt, so they can’t even measure the imbalance. Madness.

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- Schmuppes@lemmy.today ⁨2⁩ ⁨months⁩ ago
  Well, of course. What can you expect from a Chinese PCB that costs only 2500 USD, right?
  
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Kazumara@discuss.tchncs.de ⁨2⁩ ⁨months⁩ ago
You probably mean der8auer?

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- Schmuppes@lemmy.today ⁨2⁩ ⁨months⁩ ago
  Right.
  
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