NVIDIA 16-pin adapter comes in two flavors, 300V is fine for a GeForce RTX 4090 but 150V is a fire hazard
Since then we mentioned The first case of the 16-pin NVIDIA connector melting on the GeForce RTX 4090 graphics card, there were several discoveries. Now after several days of reporting issues for the first time, it looks like this players And the Igor lab We finally got to the bottom of the problem.
The NVIDIA GeForce RTX 4090 adapter is to blame, but not all of them! 300V 14AWG cable works well, 150V lead to melt
While NVIDIA and its partners work at AIB To solve the problems of the 16-pin connector, the computer technology community is working hard to find out the true cause of the problem. In the previous report, we learned that it was almost certainly the adapter that was responsible for the melt and not the card or the plug on the card itself. The 16-pin connector becomes very hot when proper contact is not made or the cable is bent too much. This caused an excessive amount of current to pass through the cable, causing temperatures to rise and the resulting melting event.
Steve Burke of GamersNexus has now discovered that while the cables themselves are the problem, not all cables can cause the card to burn out or melt. The technology outlet discovered that all of their cables are marked “300V 14AWG” while the ones shown by Igor Rated at 150 volts. This is a huge difference. But not only that, there was also a difference in welding between the two cables.
NVIDIA 16-Pin 300V Adapter Cable (Known Good Cable):
Since both outlets tore the conductor apart, it turns out that 300V cables use high quality solder while at 150V each cable line is soldered separately and with a smaller solder surface which can lead to damage during bending. This should explain why the cable was lost in Igor’s case. Cable used by Steve (GamersNexus) and Ronaldo (TecLab) was able to withstand torture through various endurance and durability tests. Both GamersNexus and TecLab The cable also ran for hours under load.
NVIDIA 16-Pin 150V Adapter Cable (Bad Solder via Igor’s Lab):
In the case of GamersNexus, their NVIDIA GeForce RTX 4090 graphics cards ran for more than 48 hours under load while TecLab had a 16-pin adapter cable running under a 1530W continuous load load tester. So this leads us to the conclusion that there are only bad cables that are causing the problem but why they are there in the first place is something that only NVIDIA and AIBs have the answer to.
NVIDIA 16-Pin 150V vs 300V soldering quality (Image credits: GamersNexus):
There’s no way of knowing which cable you’re getting unless you take the sheathing off a bit. If you get a 16-pin 150V cable, you can ask the manufacturer for a replacement with the appropriate 300V cable. The good thing is that not many users have received this 150V 16-pin cable. NVIDIA’s GeForce RTX 4090 graphics card is now with thousands of gamers and although there have been less than 20 reports of the card melting, it’s still enough to be a concern. Based on opinion polls conducted by Hardware And the playersit seems that the number of users who have received a 150V transformer is less than 7%.
Since we have a large number of GeForce RTX 4090 buyers in our forum Tweet embedI asked the question about the adapter that came with the card. 3x 8-pin 150/300V or 4x 8-pin 150/300v. So far the result looks like this. So there are about 150 rated circulating volts. pic.twitter.com/BiWdDSbuD2
– Andreas Schilling 🇺🇦 (@aschilling) October 30, 2022
Just keeping everyone updated: Out of about 130 emails so far to the 4090cable inbox, we received 7 wires rated 150V (thus likely indicating a different supply), so 5%. This rating does not immediately mean that it is bad. Reply to little info
– GamersNexus (GamersNexus) October 31, 2022
GamersNexus also advises owners of a 16-pin NVIDIA GeForce RTX 4090 adapter cable to use the following instructions to check the cable version they received with their card:
So the vast majority of gamers with 300V adapters shouldn’t worry too much but it’s still advisable to check your cable to see if it’s definitely the best. We actually checked 7 of the cables that came with our samples (FE, SUPRIM X, SUPRIM Liquid, Vulcan X, TUF Gaming, AORUS Master, SG) and they are all rated at 300V. You can also tell us in the comments below which cable you got with your NVIDIA GeForce RTX 4090 (FE or AIB) card if you own one.
news source: Tomchardwer
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