Monday, November 3rd 2025
12V-2×6 Power Connector Burns on Sapphire Radeon RX 9070 XT GPU
The story of the 12V-2x6 power connector overheating is almost as old as the original 12VHPWR connector itself, and the improved 12V-2x6 still faces issues common to the 12-pin GPU power connector family. Recently, another instance of a burning 12V-2x6 connector was reported, this time on a Sapphire Radeon RX 9070 XT GPU. A user named u/ProfessionalHost3913 shared images on the r/AMD subreddit showing his Sapphire Radeon RX 9070 XT with a burned connector end on the GPU. According to the user, the GPU was running at its default settings, with no overclocking or increased power limits, during gaming sessions of Battlefield 6, Cyberpunk 2077, Outerworlds, Minecraft, and others.
The issue appears to arise from powering the GPU with a regular PSU that lacks a native 12V-2x6 output. Instead, the GPU was connected using a 3x8-pin adaptor rather than directly to an ATX 3.1 PSU. These adaptors have been known to cause melted connectors. This problem was first observed in August, highlighting a recurring theme for new builders: to prevent this situation, avoid using last-generation PSUs and opt for an ATX 3.1 PSU design whenever possible to eliminate the need for adaptors. As more companies adopt the 12V-2x6 power source for their GPU designs, gamers might consider investing in ATX 3.1 PSUs to ensure their systems can power future generations of GPUs.
Source:
r/AMD Subreddit
The issue appears to arise from powering the GPU with a regular PSU that lacks a native 12V-2x6 output. Instead, the GPU was connected using a 3x8-pin adaptor rather than directly to an ATX 3.1 PSU. These adaptors have been known to cause melted connectors. This problem was first observed in August, highlighting a recurring theme for new builders: to prevent this situation, avoid using last-generation PSUs and opt for an ATX 3.1 PSU design whenever possible to eliminate the need for adaptors. As more companies adopt the 12V-2x6 power source for their GPU designs, gamers might consider investing in ATX 3.1 PSUs to ensure their systems can power future generations of GPUs.

109 Comments on 12V-2×6 Power Connector Burns on Sapphire Radeon RX 9070 XT GPU
in that case you would mention the brand of the tires in the title, and the specifics of the car in the article.
im smelling some shady stuff, if i understand correctly the card is in perfectly working condition if there is anything failing its not the cards fault
anyway im done with this, in the last year ive seen way too many questionable articles in the site so ill just move on from it
I have also had minor problems at times even if rarely with some applications (not games) there and there, for which I actually don't have any complaints as I reported to AMD and they usually fixed them in the next release, but I do wonder if somethinhg similar would arise if now they would still fix so in time or would leave to maybe some day, some month, because of the new scheme. I have some disbeliefs with AMD on this as their statement has been very similar to what they said for Polaris and Vega some years ago and they haven't handled them that well, but time will tell.
Hopefully they do use this as they said for general positive effects in newer and future products and do keep the RDNA1 and RDNA2 branch properly maintained instead of how they have handled Vega and Polaris one kind of forgotten to the side and several times between very long period of times for some more important problems. But only time will be able to show and tell from AMD's output on this and future products and I will judge them at that point based on so, but will keep with some understandably caution based on the previous output they have had.
Even a PCI-E 8 pin can handle 25x insertion and release without even corroding. And still its more robust then this solution is.
EDIT: Out of curiosity, I fired up a HWiNFO since it can read the power rails on my video card and put a reasonably good load on it. Out of the 235W it was consuming, ~210W was coming from the 12VHPwr cable. So the slot isn't really providing much power. And I'd imagine this behavior is similar to all other higher end models.Any higher voltage handling would only be needed on the supplemental power side. Considering this would be a sink-only system, there's no need to convert voltages back and forth. Plus GPUs don't directly operate at 12V anyway, otherwise there wouldn't be a need to have the VRM. At least one with buck converters.
Speaking of which, PCIe SIG standardized a 48V connector, which seemed to fly under the radar.
EDIT the second: Well since finding a GPU datasheet is damn near impossible to find, why not one for GDDR6? As far as I can tell, the V_DD on the thing is 1.35V.
Did the user buy the adapter, or a gpu that had the adapter coming with it? right.
Its important for (possible) buyers to know WHICH card/brand can have problems, so they avoid it (or not), and how would that work, without naming brand/model? right.
but yeah, stay away from the bad articles 😂
Looks more sturdy. It's also part of 5.1 spec so who knows, maybe 60-series will opt for this.
If everybody loved each other, we wouldn't need guns is another one of those beautiful utopian oneliners.Yeah I've never quite grasped how it works in peoples' heads when they say 'get an Astral' so you can see how poorly the design actually performs. The GPU still hasn't got jack shit to help it in longevity. You can just pre empt the eventual disaster better.
Since "global warming" is such a serious issue, then maybe hardware manufacturers could put their act together and focus on efficiency for a change. Sure, it's utopia, but just saying...
@EsaT
With a friendly smile,
Fred.
The 8 pin was rated at 330w maximum. If GPU makers chose to run it at 300w instead of 150w, it would have similar safety margins to 12v, which you guys cant stop crying about.Ah, there's the crux of the issue, 12v bad because nvidia bad.It's fine for a 350w card. Sapphire failed to put load balancing on their GPU and paid the price.Again, has has been said for the 1000th time, it is not on the connector to do load balancing, it is on the device pulling power. That is how the whole industry, not just DIY PCs, operate.
Speaking of which, where are all the AI servers burning out their hundreds of thousands of GPUs that they are hammering 24x7, al with 12v power connectors? We should be seeing warehouses full of failed cards....where are they?More qualifying statements. Not a single hard number.
What that tells me is you dont have any actual numbers, no evidence, just feelings. And because nvidia bad because green bad, and therefore anything they make is bad, you label 12v as bad and use that to color your opinion irregardless of evidence, or the lack thereof.
There have been plenty of reports on reddit, various news articles on 12 pin connectors melting, tech Youtubers have covered it quite a bit as well, the evidence is there that the connector just sucks and yet people still have some weird defense for a badly designed cable.The 8 pin can handle 330W, that is double the power of what it's rated for, meanwhile 12vhpwr/ 12v2x6 doesn't have any significant safety margin above the 600W rating.It's bad and the company who designed it should take some responsibility for it, that's the issue.
Not the childish "boo hoo people are blaming Nvidia".Load balancing isn't a part of the specification of 12v2x6, even the Asus ROG Astral with per pin power detection is likely violating the PCI-SIG specs by going beyond what Nvidia designed.And for the 10000000000th time, the connector wasn't designed with load balancing, when the connector is a fire risk it should be on the connector and the PSU to make sure the GPU side of the connector doesn't turn into a mess of melted plastic.
Server hardware isn't the same as consumer parts, this much should be obvious, Nvidia took the cheaper route with the consumer cards and it shows when comparing the connector to 8 pin molex.So any hard numbers on 8 pin molex failing then?
Again there aren't any numbers on this because any Nvidia partner making GPUs or PSUs would never admit what the failures really are, and the victim blaming is just weird, you know defending a company for this doesn't benefit you, and the blanket defense for a badly designed connector and a multi-trillion dollar company doesn't help either.
Just today, I saw the opposite again in the bubble.😒 And if ‘normal conditions’ are not adhered to here, one can expect far less from Reddit
DAUusers, right? Right?With a friendly smile,
Fred.
My guess is if it's being used or will be used, it's in compute farms.