Power supply manufacturer Haiyun Electronics recommends that users first use a hair dryer to soften the bend when installing the RTX 4090 power cord.

I always feel that the power supply problem of NVIDIARTX4090 has become more and more outrageous. At first, some users found that their RTX4090 power supply was burned out. After research, some review websites believed that this was a manufacturing problem of NVIDIA's power cord, because the RTX4090 has high power when operating at full load. When large current passes through the 12VHPW interface, it may overheat and cause the interface to melt, short circuit, and catch fire.

Of course, this is not just a problem with the wire or interface itself. When the user installs the power cord, the wire may be twisted, causing stress concentration at the interface. This may cause the connector to loosen, lead to poor contact, and aggravate overheating.

To this end, power supply manufacturer Haiyun Electronics recently released a support page titled RTX4xxx and 12VHPW/12V-2x6 Cable Guide. In the support page, Haiyun Electronics emphasizes the bendable distance and correct position of the power cord.

So how to bend the power cord according to the guide? Haiyun Electronics’ suggestion is to use a mild heat source (such as a hair dryer) to bend the power cord at the correct angle. Considering that the RTX4090 is so expensive, perhaps Nvidia should provide users with a hair dryer.

As for RTX4080/4070/4060, etc., it seems that there are not many power supply problems so far. However, Haiyun Electronics recommends that all RTX40 series have to deal with the power cord. I don’t know if this can really reduce the probability of problems.