Corsair's JohnnyGuru claims 12VHPWR melting problem is caused by connectors not properly plugged in

Discussion in 'Frontpage news' started by Hilbert Hagedoorn, Nov 9, 2022.

  1. Hilbert Hagedoorn

    Hilbert Hagedoorn Don Vito Corleone Staff Member

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  2. XenthorX

    XenthorX Ancient Guru

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    Well that's reassuring.
     
  3. k3vst3r

    k3vst3r Ancient Guru

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    Sounds like problem enhanced by users been extra careful with the 12 pin adaptor trying not bend it excessively an insert it carefully, that sometimes it isn't seating proper when they think it is fully inserted.
     
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  4. Goiur

    Goiur Maha Guru

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    So... the connector is tr**** that cant be seated correctly (bad QC) or its not obvious when its not seated correctly (connector tab well seated but the connector is not completely inserted)?

    Users failing to install it correctly should be taken into account, but many tech people took a look into it and did not noticed that (i did no see anything about it).
     
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  5. Pale

    Pale Member

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    Gamers Nexus also did extensive testing into the issue, and was unable to reproduce the melting cable even when they, for experiment's sake, intentionally damaged the adapter in ways which should increase resistance through the connector, and thus produce more heat. But they were entirely unable to reproduce the results across six different adapters. They also noted however, that their adapters were soldered differently than for example the one presented by that German site. This is a weird issue by all means.
     
  6. Spets

    Spets Guest

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    Moments like this I'm glad I over tighten things :D Now to gloat to the wife as I replace the washers in the taps >.>
     
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  7. SniperX

    SniperX Member Guru

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    In other words....make sure the connector goes balls deep into that 12pin socket... :D
     
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  8. kakiharaFRS

    kakiharaFRS Master Guru

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    Just received a cable from aliexpress and it was pretty shocking, videos and pictures you see online don't do this connector justice so I made a picture for you
    the two connectors on the left are cable mods 18AWG
    the 3 on the right are from aliexpress they are 16WG, I ordered a 18AWG too but they cancelled the order :/ will order another one but it's going to take 1-2 months again

    bottom line is the new connector is SMALLER than a single old one (wider but less height which you don't see here) and of course the contact surface of each 12V pin is smaller too
    it's insanity that someone gave this an ok for production
    a car subwoofer amplificator also works with 12V and the cable from my battery to my amp was as thick as my pinky finger for a 55A fuse, so pretty much the same current a 600W gpu would see, talk about a difference in safety
    guru3d_pcie cables2.png
    edit : the connectors are taped against a table and had no notable height difference so that's 1:1 size for the two types of connectors, no visual tricks here
     
    Last edited: Nov 9, 2022
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  9. Kaarme

    Kaarme Ancient Guru

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    It's also a bad design choice, and nothing else, if a connector is easy to connect improperly without noticing. We have had electric connectors since the 19th century, so it's not exactly a new field of engineering. Like k3vst3r said, it's also a grave matter that when you are dealing with a really expensive device and have heard rumours of the adapter being sensitive, lots of people may not be willing to use enough force to push the connector in. If you break the adapter by manhandling it, you can't use your card, yet the warranty won't help you either.
     
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  10. Astyanax

    Astyanax Ancient Guru

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    stop blaming the connector, which has been tested for years under the required loads and then some, with flying colours, its obviously a protection method for fragile egos, but doesn't correct the issue going forward.

    molex has had connections of all tightness over the years, nothing has changed.
     

  11. TheDeeGee

    TheDeeGee Ancient Guru

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    I wonder why they didn't stick with the longer pins atleast.

    That could have prevented this issue.
     
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  12. Goiur

    Goiur Maha Guru

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    lab testing != real world
     
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  13. codyrocco

    codyrocco Member

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    Let's use this:
     

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  14. andreiga76

    andreiga76 Guest

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    I can confirm it's easy to think the connector is inserted and in reality is not fully, you need to push a little more until you hear a click, you need more pressure than you are used with with 8 pin connectors.
     
  15. Astyanax

    Astyanax Ancient Guru

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    Get a valid argument, you think the 8 pin and 4 pin molexes didn't melt at all? get real.

    PC Builders adapt or leave the hobby.

    Atleast the humans in a lab learn from failure, instead of shirking responsibility.
     

  16. H83

    H83 Ancient Guru

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    Some guys here mentioned that maybe the lab testing was made without using a case and I wouldn't be surprised if this really happened.

    To make matters worse, the 4090 is huge, making it harder to seat the connector properly inside a closed case.
     
    Last edited: Nov 9, 2022
  17. mentor07825

    mentor07825 Member Guru

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    This reminds me when Apple told their customers that they're holding the phone wrong.
     
  18. hamltnblue

    hamltnblue Member Guru

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    The problem here is two fold. 1, too many connections on a single small plug. 2. The connector wasn't made Idiot proof.
    The more pins you have to press in, the more tension. Not every one has the same strength, or are afraid to apply enough pressure. To those who don't do this often, there is a fear of breaking the connector, so don't press hard enough.
    They should have stuck with the three, 8 pin connectors used on the 3000 series
     
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  19. cryohellinc

    cryohellinc Ancient Guru

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    Funny attempt to put the blame away from them.

    In any case, I'm one of those paranoid ones that always makes sure seated as best as possible in the socket.
     
  20. Goiur

    Goiur Maha Guru

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    ¿70? years has gone by since the molex started...

    You would think that in 70 years basic design flaws would be avoided.

    Get a valid argument yourself.
     
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