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  1. #1
    Member Brando's Avatar
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    6+2 pin pcie cable same as native 8 pin on seasonic m12?

    Here's the power supply I'm looking at for a possible future hd4870x2 with oc'd nehalim quad build. The Seasonic M12 600w
    http://www.newegg.com/Product/Produc...82E16817151030
    The hd4870 needs an 8 pin but the m12 ps has a 6+2 pin that they started shipping later on. So the question is, is this the same as a real 8 pin pcie? It's not an adapter, it goes all the way to the modular plugin on the power supply. BUT it was originally made for a normal 6 pin pcie wire as far as I know. What say ye?
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  2. #2
    Member EmAn's Avatar
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    its the same thing like the 24pin atx and the 20+4 pin power connectors
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  3. #3
    Member Brando's Avatar
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    I understand how the plug works, I'm just not sure if theres a difference between this and the 8 pin on a supply that was originally made with an 8 pin in mind. I think they started shipping the 8 pin with the M12's later on.
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  4. #4
    no difference, 6+2=8, but if you want to buy one that comes with an 8pin go for it
    The only stupid question is the one that is not asked.

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  5. #5
    Member Brando's Avatar
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    Ok thanks I was just curious. I read that the 6 pins supply 150w and the native 8 pins do 300w so it made me wonder how an adapter could magically double the power. Still piecing together the arguments. Opinions seem to differ greatly.
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  6. #6
    Member Surfrider77's Avatar
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    From what I have read, the two additional wires are only grounds. You could fabricate this yourself if you know what you are doing.
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  7. #7
    Member 3oh6's Avatar
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    Quote Originally Posted by Surfrider77 View Post
    From what I have read, the two additional wires are only grounds. You could fabricate this yourself if you know what you are doing.
    what he said ^^

    the extra two wires are simply grounds, check em for yourself with a DMM if your a 'need to see it with your own eyes' type of guy. if someone wants to say the native 8-pin connectors supply more power, you can believe want you want...but there is a guy that hangs out at the intersection by my place who says he is jesus christ too, has a name tag and everything
    living life 32M digits of Pi at a time...

  8. #8
    Member JonSimonzi's Avatar
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    Kind of off topic, but my PSU, and OCZ has 2x 6 pin connectors. I can get a 6 to 8 pin connector so it would work with a GX2, correct?
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  9. #9
    Member Brando's Avatar
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    Actually I think it was supposed to be 75w for 6 pins and 150 for 8 pins but I'm not claiming it's right. Just trying to be sure before I spend my hard earned money. It bothers me that there are warnings being shipped with gtx 280's telling people not to use 6 to 8 pin adapters for too long.
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  10. #10
    Member Brando's Avatar
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    Heres a link with some info that agrees with the 75 vs 150w thing. Dunno if it's right or not it's just there.
    http://www.playtool.com/pages/psucon...ml#pciexpress8
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