Melting of 12+4-pin 12VHPWR energy connectors on GeForce RTX 4090 video playing cards will be related each with a producing defect and with incorrect cable connection. That is indicated by an investigation carried out by Avid gamers Nexus specialists. They even managed to simulate the circumstances underneath which the connector started to soften within the laboratory.
Recall that shortly after the discharge of the GeForce RTX 4090 video card final month, some customers started to soften energy connectors. Till now, nobody is aware of precisely what that is related with, however principally the accusations fell on poor-quality full adapters from 4 8-pin connectors to 12VHPWR, or on incorrect connection of the connector – it turned out to be not really easy to insert all of it the best way.
Avid gamers Nexus Editor-in-Chief Stephen Burke mentioned that in line with his sources within the ranks of graphics card producers, the chance of connector melting is “about 0.05–0.1%“. He additionally famous that though NVIDIA has not but revealed the outcomes of its personal investigation, Avid gamers Nexus specialists have concluded that doubtlessly any 12VHPWR cable can fail underneath sure circumstances.
A Avid gamers Nexus investigation has proven that one of many causes of melting could also be overseas particles or items of plastic and steel that seem throughout the cable connection course of or on account of a producing defect. Nonetheless, the primary reason behind the issues appears to be the wrong set up of the cable and / or its set up with pressure at an angle (skewed).
Burke confirmed the right way to simply trigger a connector to soften by not absolutely inserting the cable into the connector on the video card, whereas concurrently inflicting it to be skewed. As famous earlier, the connector is pushed into the connector with a whole lot of power, so it’s totally simple to suppose that all the things is related appropriately, when the truth is the connector is not going to be inserted all the best way. Because of this, the contact space is small, as proven within the diagram under, which results in a rise in resistance and, accordingly, temperature. The connector on the similar time heated as much as 302 ° C and started to smoke and soften, which led to wreck to the GeForce RTX 4090 card.
It’s famous that the frequent disconnection and connection of the ability connector to the video card may also irritate the issue. As a substitute of leaving a correctly put in connector in place, many players could have began unplugging the connector regularly to examine if they’ve melted, which will increase the possibilities of issues because of overseas objects or a plug not absolutely inserted after checking. .
Through the investigation, Avid gamers Nexus discovered that a number of the earlier theories concerning the causes of 12VHPWR reflow can now be dismissed. One of many early variations was that the cable soldering to the connector was weak, which might break throughout connection, however an X-ray of a cable with allegedly unhealthy soldering confirmed this concept to be unlikely. Additionally, intentional makes an attempt to trigger injury had been unsuccessful.