Cheap eBay CPU 4-Pin Power Extensions FAIL

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  • shovenose
    Send Doge Memes
    • Aug 2010
    • 6575
    • USA

    #1

    Cheap eBay CPU 4-Pin Power Extensions FAIL

    After two of these in a row melted in my friend's Server 2012 domain controller within six months (a lightly loaded self built 2U server with very good cooling based on a Xeon E3 processor) we upgraded to a higher quality cable. We cut one of the melted ones open (not pictured), and wow, it's maybe four strands of copper! What's amazing is that the wiring melted in three seperate places and at the connector. Ridiculous!



    And no, I don't use any of these on my servers, before somebody asks.
  • stj
    Great Sage 齊天大聖
    • Dec 2009
    • 30994
    • Albion

    #2
    Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

    if your pulling serious current, you should crimp your own.

    Comment

    • kaboom
      "Oh, Grouchy!"
      • Jan 2011
      • 2507
      • USA

      #3
      Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

      Originally posted by shovenose
      We cut one of the melted ones open
      Worse than "Deer shit."


      Shoulda got extras and cut em open back when for "inspection."
      "pokemon go... to hell!"

      EOL it...
      Originally posted by shango066
      All style and no substance.
      Originally posted by smashstuff30
      guilty,guilty,guilty,guilty!
      guilty of being cheap-made!

      Comment

      • ChaosLegionnaire
        HC Overclocker
        • Jul 2012
        • 3264
        • Singapore

        #4
        Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

        was this from a china ebay seller? cuz the chinese are infamous for doing shit like that. might wanna examine your supply line to trace where exactly it came from. copper is "expensive" so they penny pinch with that as much as they can. the result? kaboom lives up to the sound of its name. (no offense meant to kaboom, the guy)

        its hard to trust stuff on ebay these days. too much chinese shit poisoning the supply lines. if it were me, i'd ghetto rewire some unused 16-18 awg ac cables and make my own cpu 4-pin extension like stj suggested. its even cheaper doing it that way... hahaha~ yea take that penny pinchers... if it still goes kaboom, i will self-terminate my own miserable existence with a 120v-240v transformer.

        Comment

        • shovenose
          Send Doge Memes
          • Aug 2010
          • 6575
          • USA

          #5
          Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

          Originally posted by ChaosLegionnaire
          was this from a china ebay seller? cuz the chinese are infamous for doing shit like that. might wanna examine your supply line to trace where exactly it came from. copper is "expensive" so they penny pinch with that as much as they can. the result? kaboom lives up to the sound of its name. (no offense meant to kaboom, the guy)

          its hard to trust stuff on ebay these days. too much chinese shit poisoning the supply lines. if it were me, i'd ghetto rewire some unused 16-18 awg ac cables and make my own cpu 4-pin extension like stj suggested. its even cheaper doing it that way... hahaha~ yea take that penny pinchers... if it still goes kaboom, i will self-terminate my own miserable existence with a 120v-240v transformer.
          yep, they came straight from china

          Comment

          • momaka
            master hoarder
            • May 2008
            • 12170
            • Bulgaria

            #6
            Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

            Wow. Was the wire 20 AWG? I'm guessing it probably didn't have any labels either. I've seen this with the really dirt-cheap PSUs.

            Comment

            • ratdude747
              Black Sheep
              • Nov 2008
              • 17136
              • USA

              #7
              Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

              Originally posted by momaka
              Wow. Was the wire 20 AWG? I'm guessing it probably didn't have any labels either. I've seen this with the really dirt-cheap PSUs.
              Probably 22AWG. 20 is legal as per ATX standards IIRC.
              sigpic

              (Insert witty quote here)

              Comment

              • kc8adu
                Super Moderator
                • Nov 2003
                • 8832
                • U.S.A!

                #8
                Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                take a magnet to those.
                wait for it......copper washed steel!
                i tossed several that came in in buggy machines.+12 ok on drive and pcie cables.
                bsod and vrm getting hot on a board that usually runs cool.
                +12 at vrm input around 7v!
                i snipped a 4 pin off a junk supply and soldered it.

                Comment

                • momaka
                  master hoarder
                  • May 2008
                  • 12170
                  • Bulgaria

                  #9
                  Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                  Originally posted by ratdude747
                  Probably 22AWG. 20 is legal as per ATX standards IIRC.
                  Oops, that statement of mine above meant to be Was the wire even 20 AWG?

                  Originally posted by kc8adu
                  take a magnet to those.
                  wait for it......copper washed steel!
                  No way!
                  That is absolute shit!

                  I have some really strong Neodymium magnets from a car throttle control - I can pickup a screw driver with them right through my hand. Should come handy if I come across suspicious wires in the future, thanks .
                  Last edited by momaka; 02-02-2016, 01:31 AM.

                  Comment

                  • caphair
                    Badcaps Legend
                    • Nov 2011
                    • 1249

                    #10
                    Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                    Random curiosity, when a high current supply line is used I've noticed thick multiple thin strands of copper and other times just one thick strand.

                    Is there a difference? I imagine multiple strands allow better flexibility but other than that?

                    Comment

                    • stj
                      Great Sage 齊天大聖
                      • Dec 2009
                      • 30994
                      • Albion

                      #11
                      Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                      multiple strands will need a larger diameter to handle the same current, but the advantage is flexability.
                      if the power is not DC then it's a different story and you need lots of strands anyway.

                      Comment

                      • Topcat
                        The Boss Stooge
                        • Oct 2003
                        • 16956
                        • United States

                        #12
                        Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                        I havent seen that since the Clawhammer Athlon days....
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                        Comment

                        • momaka
                          master hoarder
                          • May 2008
                          • 12170
                          • Bulgaria

                          #13
                          Re: Cheap eBay CPU 4-Pin Power Extensions FAIL

                          Originally posted by stj
                          if the power is not DC then it's a different story and you need lots of strands anyway.
                          To add to that...
                          Not only do you want more strands, but also have them isolated from each other. With high-frequency AC current, the electron flow moves almost entirely on the surface of the conductor. Therefore it doesn't matter how thick the wire is but rather its outer surface area size only. So to get more HF AC current through a thinner wire, the wire needs to have more and thinner strands than less strands that are thicker.

                          Originally posted by Topcat
                          I havent seen that since the Clawhammer Athlon days....
                          Just curious... why that specific time period?

                          Comment

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