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A comment on Nvidia investigating reports of RTX 4090 power cables burning or melting. Parent comment

Re:Nvidia investigating reports of RTX 4090 power cables bur... by willis936 on Sunday October 30, 2022 @08:26AM (#33393840)
There isn't an issue with resistive heating. The safety margin is down a few factors from the 8-pin PCIe adapter, but there is still a healthy safety factor.

https://twitter.com/hms1193/status/1585257428291325958

This isn't like running kA of current where the threat of thermal runaway is always present, even with active cooling. I worked on a stellarator that had a coil feed blow (years before I started). Pushing even 10% more current meant a complete overhaul of the feeds. That's what thin margins looks like.

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Re:Nvidia investigating reports of RTX 4090 power cables bur... by Retric on Sunday October 30, 2022 @09:17AM (#33394245)
It’s only a healthy safety factor if absolutely nothing goes wrong. Connectors are normally a weak point and internal PC components aren’t supposed to be plugged and unplugged regularly. Simply testing the multiple hardware configurations can quickly result in failures.
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