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PSU question for RTX 3080

  • 11-11-2021 01:51PM
    #1
    h0neybadger
    Registered Users, Registered Users 2 Posts: 324 ✭✭


    Hi all,

    I picked up a 49" ultrawide samsung (5120 x 1440 @144hz) last week.

    Today, I received my RTX 3080 V2 OC.

    I have a Corsair RM 750X modular.

    the GPU needs 2 x 8 pin connections.

    PSU.png

    Can I use any of the 3 slots in green for the GPU?

    Red is used by the 8 pin connector for the motherboard.



Comments

  • #2
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 26,545 CMod ✭✭✭✭Spear


    The red and green should be the same, and can be used equally for both PCI-E devices, and for the CPU power.



  • #3
    K.O.Kiki
    Registered Users, Registered Users 2 Posts: 19,038 ✭✭✭✭K.O.Kiki


    Make sure to use 2x separate PCI-Express 8-pin cables for power - don't use 1 cable & split, it won't provide enough power.



  • #4
    buzzerxx
    Registered Users, Registered Users 2 Posts: 930 ✭✭✭buzzerxx


    WOW, I have the same question and have been checking youtube for answers. i just got a sammy g9 2020 model and a used rtx 3080 rog strix gaming gpu in white. 2 differences though, the psu is an rm850x and the gpu has 3 x 8pin sockets.



  • #5
    K.O.Kiki
    Registered Users, Registered Users 2 Posts: 19,038 ✭✭✭✭K.O.Kiki


    https://www.boards.ie/discussion/comment/118151824#Comment_118151824

    AFAIK you would be best off using 3x 8-pin cables for a 3080 STRIX card, as PCI-e slot (75W) + 2x 8-pin (2x 150W) would be below its maximum power consumption (400-450W).



  • #6
    h0neybadger
    Registered Users, Registered Users 2 Posts: 324 ✭✭h0neybadger


    Thanks, yeah I definately will use 2 cables, and not a Y split cable setup.

    I have 1 x 8 pin to 8 pin.

    And a 12 pin split into 2 x 8 pin.

    Will this work?

    I mean, not the 12 pin side. the 2 x 8 pin side are both male connections. So it would connect correctly.

    But is it enough?



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  • #7
    Spear
    Moderators, Computer Games Moderators, Technology & Internet Moderators, Help & Feedback Category Moderators Posts: 26,545 CMod ✭✭✭✭Spear


    https://www.boards.ie/discussion/comment/118153963#Comment_118153963

    The two separate cables should be fine if you use just one end of the Y split cable.



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