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Thread: Can you alter 2 6-pins into 1 8-pin without an adapter?

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    Default Can you alter 2 6-pins into 1 8-pin without an adapter?

    Title pretty much says it. I finally got my new GPU, but my old PSU doesn't have an 8-pin. I tried just plugging in one of the 6-pins to it since they're backwards compatible, but no go. I boot up and no display (my MoBo doesn't have onboard video) so I suspect that a single 6-pin just doesn't have the power to run it. I see online that I can order a 2 6-pin to 1 8-pin adapter but... *toddler voice* "I want it noooooooow!"

    Sorry, had to get that out. :P

    So, anyway, that made me think; Could I take apart and splice the wires from both 6-pin connectors and combine them into an 8-pin to accomplish the same thing? I really wish I'd gotten the pin remover tool kit I've been wanting for a long time now, but I'm feeling just adventurous enough to attempt it without one. But will it work?

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Doh! Nevermind. I kind of forgot one important fact.... that I don't have an 8-pin end to splice onto it in the first place. *sigh*

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Well, since that idea is out the window (I raided my old spares to see if any of them had an 8-pin I could cannibalize, but no) do you think I'm at least diagnosing correctly? If I get a 2 6-pin to 8-pin adapter do you think it will solve the issue? ...or if the 6-pin didn't power it on then nothing will?

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    So, from what I understand the 8 pin adds two more pins to handle the extra amperage pulled from heavier GPUs. In a sense, your theory is sound because rather than use thicker wires, PSUs use the extra two pins to keep wires from burning up. On the other hand, who knows what damage is in store if you wire it wrong.
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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    I'd have to say get an adapter or another PSU, certainly possible to do but why chance it?

    My vote between the two choices would be to get a proper PSU for your setup.

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    you have a 550 Watt PSU its time for an upgrade get at least a 650 to 750 for future upgrades

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Well, I'd come to all the same conclusions so I started looking for a new PSU. I had about $50 to spend for it and had found a EVGA 600B or an Antec (rebranded SeaSonic s12ii620) but really had the itch to get it done now instead of next week. I live in a small town so the only place that MIGHT have had what I need is a little computer repair shop. Went there this morning and he had an EVGA 500W for, you guessed it, $50. I'd really wanted to go for a bit more wattage, but with a system wattage of 312, it honestly is enough. "Better later" or "good enough now"... I went for it. Now it's time to install.

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Well crap. Installed the new psu and it works. Installed the new GPU again and nothing. The fans on the card run, but no video signal to monitor. Normally, I'd check my bios to make sure it's using the card, but it turns out my MoBo has no on board video.

    Suggestions? *sigh*

    Sent from my SM-G900R4 using Tapatalk

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Quote Originally Posted by HyperactiveSloth View Post
    Well crap. Installed the new psu and it works. Installed the new GPU again and nothing. The fans on the card run, but no video signal to monitor. Normally, I'd check my bios to make sure it's using the card, but it turns out my MoBo has no on board video.

    Suggestions? *sigh*

    Sent from my SM-G900R4 using Tapatalk
    Maybe this could help:
    GPU and CPU power connections - Overclock.net Community

    Always look beyond the limits...

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    Gu3
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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Any Luck Sloth?

    If not, you might try unplugging everything except 1 stick of RAM, the CPU and the video card. Then boot to see if you can get video to display. Can you boot with the old GPU and new PSU?

    S.

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Yeah, I got it to work (and admittedly, did a celebration dance when the screen came on). I tried nearly everything. The old card would work, but not the new one. I swapped it out and back a few times trying different things. Then, to make sure the card was fully functional, swapped out the GPU from one of my kids' rigs and it worked perfect right off the bat. Tried the GPU from theirs in mine and got nothing. Tried about a dozen other things, then had a wild and crazy idea. I reflashed the BIOS of the MoBo. Turns out the original BIOS was made by the company that built the PC (yes, I bought a prebuilt, but it was a great deal and I really liked the company). I'm guessing that when they made their own BIOS they only bothered to program it to recognize the hardware they were using instead of making it open-ended. Once the manufacturer's (MSI) updated BIOS was on the board... BAM! it worked fine.

    Hooray! I have a new GPU breathing fresh life into this old rig. Boo! to the day-and-a-half I spent trying to figure out why the hell it wouldn't work.

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Congrats! Look at it this way....Troubleshooting Practice.

    S.

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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Great news Sloth, Congrats. Almost always the solution to any problem is much simpler than we thought it is.

    Always look beyond the limits...

  14. #14
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    Default Re: Can you alter 2 6-pins into 1 8-pin without an adapter?

    Quote Originally Posted by Smiki007 View Post
    Great news Sloth, Congrats. Almost always the solution to any problem is much simpler than we thought it is.
    It basically came down to "breadboarding in my head." I just started from the beginning thinking about everything that happens once you hit the power button. I got to "the motherboard takes stock of all components connected to it" which led to "How?" and then "BIOS!"

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