HomeTechnologyTesting suggests defective cable could also be accountable for melting RTX 4090...

Testing suggests defective cable could also be accountable for melting RTX 4090 connectors

The power adapter for the RTX 4090 feeds four 8-pin power connectors into a single 12VHPWR connector.
Enlarge / The facility adapter for the RTX 4090 feeds 4 8-pin energy connectors right into a single 12VHPWR connector.

Sam Machkovech

Earlier this week, a few Reddit customers reported that the ability connectors for his or her costly new Nvidia GeForce RTX 4090 GPUs had partially melted and that Nvidia was trying into the difficulty. Since then, at the very least 9 extra Reddit customers have posted about the identical downside with the 16-pin energy connector (a thread accumulating all data on the issue is right here).

Igor Wallossek of the German-language {hardware} website Igor’s Lab has additionally carried out extra testing, and mentioned that the ability adapter cable (reasonably than the GPUs or the 12VHPWR connector) could also be accountable for the issues. The adapter, which is seemingly manufactured by an organization referred to as Astron and was supplied by Nvidia to all of its board companions, makes use of “a complete of 4 thick 14AWG wires distributed over a complete of six contacts,” with a skinny solder base that Wallossek says could be broken simply when the cables are moved or bent.

The solder inside of Nvidia's power adapter cable can be damaged if the cables are moved or bent too much.
Enlarge / The solder inside Nvidia’s energy adapter cable could be broken if the cables are moved or bent an excessive amount of.

“If, within the worst case, the 2 outer wires break off, all the present within the center flows by means of the remaining two wires,” Wallossek wrote. “The truth that this then turns into actually scorching doesn’t need to be defined individually.”

Distinction Nvidia’s adapter cable to the 12VHPWR cable supplied with a Be Quiet! Darkish Energy Professional 13 energy provide, one of some newer ATX 3.0 PSU fashions with a 12VHPWR cable that connects proper to the PSU reasonably than counting on an adapter. The cable is thicker than the one in Nvidia’s adapter as a result of each pin has its personal wire, but it surely additionally runs cool and delivers dependable energy to the GPU.

Wallossek additionally mentioned that Nvidia instructed its companions to ship all affected playing cards again to Nvidia for additional investigation and testing. We requested Nvidia about this downside and the investigation earlier this week and can replace if we obtain new data.


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