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RX 480 8 pin power supply

Discussion in 'Videocards - AMD Radeon' started by PwntUpRage, Dec 6, 2016.

  1. PwntUpRage

    PwntUpRage Member

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    Rogers video Gold member
    Hi, searched forum but couldnt get a match so here goes.

    Old Radeon 6870 card used two 6 pin pcie cables.

    New MSI Rx 480 4 gb uses a single 8 pin pcie connection.

    Can I use the two 6 pin pcie to 8 pin cable adapters you can buy to power this card? Or am I out of luck and have to buy a new PSU....

    Present PSU is a silverstone 600 watt

    Thanks
     
  2. Extraordinary

    Extraordinary Ancient Guru

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    Should be able to, iirc the 8 PIN PCI-E power cables on some PSUs are actually 6 pin & 2 pin, with the two separate pins connected to two of the pins on the 6 block

    EDIT - Just checked mine and it's not setup like that, all 8 pins go to the PSU, but fairly sure I've seen PCI-E power leads set up like that before
     
    Last edited: Dec 6, 2016
  3. Dch48

    Dch48 Ancient Guru

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    I have 6+2 cables and I hooked one to my 470 but I'm not sure if it matters what 2 pins the extra cables go on. I did it so the extra 2 plugs remained on the same side of the 6 pins as the wires are. Everything is working fine but I just wonder if it matters what way they are hooked up. My previous card used two 6 pin connectors.
     
    Last edited: Dec 7, 2016
  4. airbud7

    airbud7 Ancient Guru

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    OP look a little closer at your PCI-E power cables there should be 2 more that are hanging loose right next to the 6pin (Black)....Heck I just found them on mine a few weeks back :nerd:
     

  5. PwntUpRage

    PwntUpRage Member

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    Ya first thing I looked for. Doesnt seem to be one.

    I'll look again, cant hurt.
     
  6. PwntUpRage

    PwntUpRage Member

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    Grrr, looked again, none....but it just didnt seem right so I looked up the PSU online and sure enough, it said there was one 6/8 pcie connector.

    Pulled all the wires out, cable ties and all, still nothing. Noticed two little wires going behind the hard drive that shouldnt be there...there it was.

    Instead of a 6 pin pcie with a short little looped 2 pin with it, the 2 pin had 10 inches of its own cable.

    Thanks for the push, good to go now!
     
  7. Agent-A01

    Agent-A01 Ancient Guru

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    That's very odd, old power supply?
     
  8. PwntUpRage

    PwntUpRage Member

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    Six years maybe?
     
  9. Athlonite

    Athlonite Maha Guru

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    Probably time for a new one then
     
  10. gupsterg

    gupsterg Member Guru

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    I would have no hesitation doing this, depending on spec of PSU. On an older rig I still have which at the time had a very old Seasonic S12 600W with only 2x 6 pin PCI-E I used a Hawaii card (8+6pin) for folding@home for many continuous hours (48hrs+ several runs).

    Model number?
     

  11. PrMinisterGR

    PrMinisterGR Ancient Guru

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    You should be just fine, and the power consumption is in the same ballpark. The 8-pin connector is 150W and the 6-pin ones are 75W each, so it's really a drop in replacement with no issue.
     

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