NVIDIA Addresses The RTX 4090 Cable Melting Issues!

RTX 4090 melting cable problems

Some of the NVIDIA RTX 4090’s power adapters have a defect that causes them to malfunction and overheat. Reddit users were the first to report the issue in late October, but its root cause has yet to be determined. Although NVIDIA has not officially stated as much, it seems the RTX 4090’s 16-pin connector is to blame.

The RTX 4090 consumes a lot of power, even when compared to the most powerful graphics cards. Those wires only have to be connected once for all that juice (450W stock / 500W+ overclocked). As you can imagine, even the smallest problems, like a bent wire or a loose connection, can have a major impact on the system when so much power is concentrated in one area.

At the weekend, NVIDIA updated the situation a bit (via Tom’s Hardware). “We have no new information to share at this time, but our investigation into the reports is ongoing. Both NVIDIA and our partners are dedicated to providing excellent customer service and a speedy return policy “The GPU manufacturer told KitGuru as much.

The adapter’s angle may be a limiting factor in how much it can be bent without breaking, as one possible explanation. For a 90-degree connection, the RT 4090 can be used with the adapter that CableMod provides.

Nvidia RTX 4090 12VHPWR Cable Melting Is Becoming A Common Problem For Users

Seven more users have reported problems with the power cable for their Nvidia RTX 4090 graphics cards.

Since two customers alerted Nvidia to the issue earlier this week, users on the company’s Reddit forum have been compiling a list of all the reported incidents(Opens in a new window).

Nvidia RTX 4090 12VHPWR Cable Melting Is Becoming A Common Problem For Users

This concerns the RTX 4090 product’s included 12VHPWR power supply. Its purpose is to provide additional juice to the graphics card via a lone cable. Unfortunately customers, however, have reported that the same adapter melted along the plastic edging of their 16-pin connector.

Okay, so I only spent one day using the card. One Reddit user wrote(Opens in a new window) on Friday, “I was playing Assassin’s Creed Valhalla, (barely opened the game, and played for 3 minutes) then I felt the burning smell and I immediately turned my PC off and took the cable off.”

According to Igor’s Laboratory, the Nvidia-branded 12VHPWR adapter cable is poorly made and can overheat. A thin metal “bridge” inside the connector of the adapter is the precise cause of the problem. Similar to how a bent cable at a 16-pin connector can lead to a poor connection and subsequent temperature spikes, bending the cable in any other way can lead to the failure of this bridge.


What Is Happening?

To put it simply, the RTX 4090’s overheating problem stems from the type of power adapter that comes standard with the graphics card. The huge GPU can be connected to a regular PCIe power supply via the included ’12VHPWR’ adapter, a 16-pin connector.

The PCIe Special Interest Group (PCI-SIG), a consortium of technology manufacturers responsible for the advancement of the PCIe connection standard, collaborated on the development of the 12VHPWR adapter.

Because the RTX 4090 (and the upcoming RTX 4080) power-hungry GPU was built for use with newer ATX 3.0 PSUs, which aren’t yet widely used by PC gamers, Nvidia, a key member of the PCI-SIG, employed the 12VHPWR adapter for these products.

What Is Happening

The PCI-SIG warned its member companies earlier this year about the potential for “thermal variance” issues when using the 12VHPWR connector for high-power connections.

Here, you can read our comprehensive breakdown of the memo. The RTX 4090’s 450W of base operating power puts it squarely in the category of ‘high-power’ hardware.

This means that Team Green alerted Nvidia to the problem in advance, but that Nvidia ultimately decided the card was safe after conducting its own internal tests.

There are now over ten confirmed instances of this happening; no injuries have been reported, but users who have had their cards malfunction have noted that the plastic connector melts and smokes when left unattended.


For What Reason Is This Taking Place?

Nvidia has been relatively quiet about the melted power connectors, which we attribute to the company’s efforts to investigate the root cause of the problem. The GPU giant has not issued a major public statement or safety warning regarding the overheating issue.

A large group of tech writers and bloggers are also attempting to duplicate the melting issue.

For What Reason Is This Taking Place

One theory suggests that the adapter is overheating because users with smaller PC cases have to bend the power cable at rather sharp angles to make it fit against the window panel, potentially causing damage to the cable and the adapter.

We recently learned that Corsair’s resident PSU wizard JonnyGuru published a report where he suggests that the adapter being improperly inserted into the GPU could be the cause, but this theory has yet to be confirmed.

Due to the fact that ATX 3.0 PSUs are not in need of the adapter, it appears that the problem is limited to users of ATX 2.0 PSUs.

According to Reddit threads, the issue is affecting cards from a variety of third-party manufacturers, including MSI, Gigabyte, and Asus. It’s interesting to note that none of the reported incidents involve a Founders Edition card bought directly from Nvidia.

What Can We Do About It?

The likelihood of your own RTX 4090 catching fire is extremely small if you decide to purchase one (or if you’ve been so fortunate as to have already located one).

We don’t know the exact number of units Nvidia has sold, but it’s a lot: the card sold out on the first day it was available. Nevertheless, 23 confirmed failure cases isn’t a huge number, even if it’s not negligible statistically.

A new ATX 3.0 power supply will eliminate the need for the problematic 12VHPWR adapter, effectively guaranteeing the safety of your GPU. Also, as recommended by JonnyGuru, make sure the adapter is firmly connected and try not to bend the cable too sharply.

In this case, we would recommend against purchasing an RTX 4090. No one outside of professional animators and Twitch streamers needs a graphics card that costs $1,599.

Even more shocking is that, according to Steam’s latest Hardware Survey(opens in new tab), the vast majority of PC gamers are still employing Nvidia GPUs from the 1000 and 2000 series.

What is our advice? You can either hold out for more cards to come out, or you can hunt around for a deal on a mid-range card from the previous generation, such as the fantastic RTX 3070.


NVIDIA and AMD’s top-tier graphics cards worked fine with the older 6- and 8-pin connectors. The image below shows the difference between the power connectors for the RTX 3000 and 4000 series.

The RTX 4090’s massive power consumption, at 450 watts (base clock speed) and 600 watts (overclocked), is in a different league altogether. A maximum of 150 watts can be drawn from each eight-pin connector, and each connector has three 12v pins.

For an RTX 4090, this means a total of four eight-pin connectors, which takes up a lot of real estate on the graphics card’s printed circuit board (PCB).

In addition, the sense wires in the more modern 12VHPWR connector prevent power supplies from tripping or burning out.

For More References & News Related Articles, You Can Check Our Website: trendingwork.com


Related Posts

Karan Siradi

I am an author and a public speaker. I was born in India and have travelled to many different countries. I have a masters in public communication from California University and I love to write about famous peoples from different industries.

Leave a Reply

Your email address will not be published. Required fields are marked *

Share via
Copy link
Powered by Social Snap