NVIDIA tells board partners to collect GeForce RTX 4090 cards affected by 16-pin power adapter fusion – VideoCardz.com

NVIDIA requires board partners to collect and send defective RTX 4090 cards to HQ

Igor’sLAB reports that NVIDIA has notified all AIC (Add-in-Card) partners to collect the affected RTX 4090 with its “melted” 16-pin power connectors and ship it directly to HQ.

NVIDIA is ramping up its response to new power adapter issues. A story exploded earlier this week after several users reportedly experienced issues with RTX 4090 cards that died after melting 16-pin PCIe Gen5/12VHPWR connectors and power adapters, in some cases destroying the cards in the process.

Of course, that’s not a good look for NVIDIA, whose logo is on every 4×8-pin to 16-pin power adapter that came with the cards. The overheating issue, and in some cases, the fusing power connector seemed to affect all board partners, so the issue had to be escalated within NVIDIA.

Igor Wallossek confirmed with people familiar with the matter that NVIDIA has requested that all affected cards be shipped to headquarters for analysis. It’s not clear if this means NVIDIA HQ or AIC HQ, but it shouldn’t matter because both parties are able to discover the root cause of this problem.

nVIDIA just notified all AIC this morning…all the damaged cards should be sent directly to HQ for failure analysis, this is the first time…even a few years ago when there was a problem with the 2080 Ti with Micron, they didn’t.

– Yegor Lab

Igor believes that this problem is not caused by severe bending of the power cable, nor is it a consequence of exceeding the recommended use cycles. The problem may be the power adapter itself, which is of poor quality.

NVIDIA 12VHPWR (PCIe Gen5 Adapter), Source: Igor’sLAB

It is said that the transformer may have serious design flaws. Oscillating contacts and unsafe soldering may be the reason many transformers experience thermal surges. The main concern is with NVIDIA’s own power adapter, other brands may not be affected by the problem.

Why does NVIDIA’s 12VHPWR adapter have problems:

  • The problem is not with the 12VHPWR connection as such, nor with the frequent plugging or unplugging.
  • Standard power supply cables from brand manufacturers are not affected by this yet.
  • The current driver is NVIDIA’s 4×8-pin adapter in the accessories, the poor quality of which can lead to malfunctions and has already caused damage in individual cases.
  • Splitting each of the four 14AWGs into each of the six pins in the transformer’s 12VHPWR connector by soldering them over very thin bridges is dangerous because the ends of the leads can break at the solder joint (eg, when bent or bent multiple times).
  • Bending or bending wires directly at the transformer connector increases stress on the weld joints and bridges, so that they can separate.
  • The internal bridge between the pins is very thin (output cross-section) to compensate for current flowing on two or three lines instead of four 12V lines.
  • NVIDIA has already been notified in advance and the data and photos have also been made available by staying calm! Directly to the R&D department.

NVIDIA confirmed to The Verge that it is actively investigating the issue. The company has already promised to replace the first reported card. Other users should not worry about substitution, but it is advised to pay more attention to the cards when playing.

Source: Igor’sLAB (statement), Igor’sLAB (analysis)

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