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Igor's Lab figured out why NVIDIA adapters are melting!

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  • Published on Oct 26, 2022 veröffentlicht

Comments • 4 837

  • Shrek2onHulu

    Honestly if I am spending this much on a graphics card I shouldn’t need to worry about silly stuff like this.

  • John Swanson

    I think the reason that you couldn't recreate the failure is that you completely removed the wire. The melting is probably caused by a wire that is barely making contact and creating a high resistance connection.

  • Quick Games

    one thing i found funny with this whole story is people claimed its not that big of a deal, yet if it wasnt i wouldnt have known about it cause it wouldnt have hit media

  • Andy Williams

    It's been over a decade since I worked at NV, but I vividly remember Jensen ending the last quarterly meeting I attended with the words, "What can you do to improve gross margins?" Clearly, saving a few cents was the goal when they sourced these cables.

  • Kinyin
    Kinyin  +75

    Thanks to the wonderful work on GN, it appears that all of these theories (including Igor's Lab) are unfounded and not the issue at all.

  • Qwarzz
    Qwarzz  +56

    If you get your hands on a melted connector I would suggest having it x-rayed before trying to cut it open.

  • Joeblow
    Joeblow  +1

    Good to see Nvidia letting the tech community do their R&D for them. Big brain move.

  • Ryan Nye
    Ryan Nye  +148

    The 'piece of metal' the wires are soldered is commonly referred to as a Bus Bar 😉

  • be quiet!
    be quiet!  +316

    Great video Jay!

  • Akhil Manjunath

    is it safe yo use a corsair 12vhpwr cable with 2*8pin psu cable for a 4080?

  • nightworxx

    Hi, on the soldering in the top left corner of your opened plug (

  • Rob
    Rob  +6

    If your motherboard supports the use of a thermal sensor, I suggest you'll strap it to that connector and set your bios to sound an alarm if it exceeds a certain threshold.

  • Filip
    Filip  +1

    The problem of heat will not be as visible when connection is cut of completely. The real issue would be poor connection - broken solder joint that is touching the pad slightly. This will increase resistance massively and act as a resistor (electric heater basicly). When the connection is not there at all other wires have to carry additional load, but it will not cause that much difference in the temperature

  • Ray B
    Ray B  +1

    Great work Jay. I am wondering if the missing ingredient is arcing. If the foil breaks and it is close enough, it could potentially arc across producing a lot of heat. No way to prove it though under controlled conditions without running hundreds, maybe thousands of tests, or just getting lucky/unlucky.

  • Wyndstrom Apfelstrudel

    This is definitely some good information! When I do decide to upgrade to a 40xx or higher, I will certainly keep this in mind!

  • Snarl
    Snarl  +2

    Might not only be the one problem at work here, if the contact area of the pin with the plug is smaller because its not fitted well, might increase the temps to melting point. If you bend the cable enough to force open the plug a little or not have it in all the way or there are a few plugs that are oversized or shorter maybe?

  • Ben Powell

    Honestly I love videos like this. So if a friend asks what he needs for a build, a new cable/certain PSU, is required

  • Dags E
    Dags E  +1

    I think its because when it breaks off inside it doesn't disconnect fully, leaving a sliver of material just touching the plate, creating so much resistance that it heats up tremendously, if you cut it off completely then there is no problem, since the rest of the wires can sufficiently feed the connector.

  • Nostalgia Realm

    It scares me that a multibillion-dollar operation can miss such a crucial issue in the design process :/

  • James Pendleton

    I would be interested in seeing how many amps are actually being pulled through these cables, and if the affected systems are using extensions before the adapter. I've had several customers come into my shop with burnt alternator wiring after they install other loads in their vehicle. Just upgrading to a larger cable fixed it. Higher amps/watts over a longer distance creates more heat and requires a larger diameter wire. I'm really surprised they went to this design in the first place. I would be much happier looking at 4 giant connectors on the side of the card vs burning my house down.