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Is it Still Safe to Use a 16-Pin GPU Power Connector in 2024?

When Nvidia released the RTX 30 Series GPUs, the firm also unveiled the 16-pin GPU power connection. But shortly after, it was discovered that 12VHPWR had problems. A few individuals discovered that the power wires for their RTX 4090 GPU were liquefied! This story has been ongoing for a while. The modified 12V-2X6 standard was issued in mid-2023 by the PCI-SIG organization, which is now responsible for developing new PCI standards, including connection designs.

The Founders Edition RTX 40 Super from Nvidia seems to be utilizing the safer and more dependable 12V-2X6 standard. The new Founders edition won't melt, for that reason. Nvidia has already begun using the new 12V-2X6 connection on their GPUs, as IgorsLab revealed. Thus, it follows that 12V-2X6 should already be included in the new RTX 40 Super series Founders Edition version GPUs. But well, what do you know?

There Are Still Some RTX 40 Super GPUs That Use 12VHPWR

It turns out that under the rebranded RTX 40 Super lineup, certain new GPUs produced by companies (like MSI) include: The RTX 4070 Super, RTX 4080 Super, and RTX 4070 Ti Super continue to implement the 16-pin GPU power connection utilizing the outdated 12VHPWR standard!

This has been brought to light by the X (formerly Twitter) user @wxnod, who has previously given trustworthy information on PC hardware. His most recent article reveals that certain recently introduced RTX 40 Super AIB cards (the brands are not specified) regrettably do not use the new 12V-2X6 standard!

Furthermore, according to the IgorsLab report—which can be seen above—they disassembled an AIB card of an Nvidia GeForce RTX 4070, namely the MSI Gaming X Trio edition, and discovered that the older 12VHPWR-style connection was in use!igors lab findings of 16 pin gpu power connector showing 12vhpwhr older standard being used instead of 12V-2X6 new standard
Picture from Igorslab.de

16-Pin GPU Power Connector: 12V-2X6 Safety vs 12VHPWR

By the end of 2023, most people thought that the issues with the 16-pin GPU power connection based on 12VHPWR had been resolved. However, Byogore, a Reddit user, said that he had encountered the same 12VHPWR problem with his $1599 ASUS RTX 4090, in which the connector cable melted. The customer apparently had zero issues with the graphics card prior to this, which occurred precisely one year later.Furthermore, NorthRidgeFix, a PC hardware repair firm, has claimed that they have received several RTX 4090s that have the same issue. There is a widely held belief that the 16-pin GPU power connection cable is dangerous to use if it is not fully inserted.Even still, a lot of folks who swear that their cable was inserted completely had problems. Some even complained it was difficult to determine whether it was put all the way through.To put it simply, the new 12V-2X6 power connection standard is more dependable and safer. HardwareBusters tested it, and their results show that at suitable temperatures, the new standard can withstand 640W of power.
It seems that even when the connection is partially inserted, the standard 16-pin GPU power connector does not burn . The 12V-2X6 standard's complete specifications are available here. Since I construct PCs, I will personally NEVER choose a graphics card or power supply that does not follow the 12V-2X6 standard.

How to Use a 16-Pin GPU Power Connector Safely

This raises a crucial question. How do people who construct PCs, like you and me, know what configuration to use? Which cords are secure? How can you make sure a GPU you want to purchase is as far away from problems like these as possible?Recently, I intended to purchase a power supply that has a 16-pin connection. According to what I've researched, there is a "safer" way to incorporate the new standard into your PC build while guaranteeing at least some reliability and safety if you plan to purchase a graphics card or power supply that specifically uses the 16-pin GPU Power Connector for power.
12vhpwr gpu power cable safe to use when correctly implementedIt is safe to utilize 12VHPWR when implemented correctly.
According to Igorslab, the temperatures they tested in a proper 12VHPWR implementation ranged from 60 to 70 degrees Celsius. A power supply of 540W was used to test this configuration. So, is purchasing a power supply or GPU that adheres to the outdated standard really that big of a deal? To maximize the safety and dependability of your PC construction, heed the following advice:
  • Ensure the power supply has the correct implementation of 12VHPWR.
  • If you can’t get 12V-2X6, repeatedly check to ensure that your cables are plugged in all the way.
  • Request the brand’s GPU & Power Supply support team for information regarding which 16-pin power connector standard is being used on a product you’re interested in buying.
  • Try to get PC components based on the newer standard. If you simply cannot, then deeply research to ensure that the power supply has the correct implementation.
    • For example, the BeQuiet Dark Power Pro mentioned by Igorslab employs the use of thick 16AWG wires for every single pin of the GPU power connector.
    • Igorslab has documented the correct way to implement 12VHPWR here.

How to Handle a Melting 16-Pin GPU Power Cable

Even so, report any problems you may be experiencing with the 16-Pin GPU power connection by getting in touch with your GPU manufacturer right away. A lengthy three to five year warranty is included with graphics cards.If you require a new GPU, you should be able to utilize the warranty to start an RMA. I will nevertheless, as I already said, strongly avoid anything that uses the 12VHPWR standard in my PC setups. I would only take into account components that make use of the more recent, secure, and dependable 12V-2X6 implementation.

Is the 12VHPWR being used by the RTX 40 Super still the case?

According to reports, Nvidia discussed the problem with its board partners during a meeting last year. They allegedly received GPUs to look into the problem. There's no denying that Nvidia and its board partners have had formal talks.In light of this, I would like to think that the latest RTX 40 Super GPUs are probably safe to utilize, even if they use 12VHPWR rather than 12V-2X66. Compared to the earlier implementations, they could have some kind of mitigation.
RTX 4080 Super, RTX 4070 Ti Super, and RTX 4070 Super graphics cards have launched and they use 12V-2X6 new GPU power connector standard
While certain AIB cards are said to employ the outdated 12VHPWR standard, the RTX 40 Super Founders Edition GPUs seem to use the safer 12V-2X6 standard. Picture Source: Nvidia
Nevertheless, I find it quite perplexing that the 12V-2X6 standard isn't being used universally . Why isn't it used by every single graphics card in the new series of RTX 40 Super graphics cards?Interestingly, none of the latest GPUs from chipmaker AMD utilize a 16-pin power connection. I guess that by making that choice, they avoided a serious blow. Owners of AMD GPUs should not worry about these problems at all. Even cards with high TDP, such as the RX 7900 XTX, use the outdated 8-pin connector, which doesn't seem to have any problems.I hope that when the RTX 50 series is released, 12VHPWR will have been fully phased out. I think AMD will be able to finally contemplate implementing the new standard by then. I really hope that 12V-2X6 provides the foundation for their deployment on all graphics cards.Regarding the 16-pin GPU power connection, what are your thoughts? Will you be purchasing a new graphics card with this design for your PC build? Tell us in the comments section below.
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