Asus Strix GTX 970 in Mac Pro 3,1

Discussion in 'Mac Pro' started by Kro97, May 1, 2016.

  1. Kro97 macrumors newbie

    Kro97

    Joined:
    May 1, 2016
    #1
    Hi All,

    I'm trying to see if my Asus Strix GTX 970 card will work in my Mac Pro 3,1. I know the GPU has an eight pin connect but the mac only has two 6 pin connectors, will an adaptor work to combine the two? Or will there be too little/too much power?
    Thank you,

    Kro97
     
  2. bax2003 macrumors 6502a

    bax2003

    Joined:
    Dec 25, 2011
    Location:
    Belgrade, Serbia
    #2
    I am using that card in my 5,1 with one 6-pin to 8-pin adapter without problems.
     
  3. Fl0r!an macrumors 6502a

    Joined:
    Aug 14, 2007
    #3
    On reference cards with stock clock a single 6pin should be easily sufficient, even under full load.

    On OC'ed cards I'd use a 2x6->1x8 adapter though. Those cards can consume >200W, which is way more than a single 6pin can/should provide.
     
  4. Kro97 thread starter macrumors newbie

    Kro97

    Joined:
    May 1, 2016
    #4
    Thank you!
    --- Post Merged, May 2, 2016 ---
    Thank you!
     
  5. shawnparks1969 macrumors newbie

    shawnparks1969

    Joined:
    Jul 4, 2016
    #5
    Hi guys - I'm kind of clueless here. I picked up an ASUS STRIX GTX960, 4GB for my MAC PRO 3,1. The card has 1x6 pin PCI-e connector. The motherboard I see has 2 available PCI-e power connectors (male). If the power available for each connector is 75w and the card can draw about 200, do I bridge these connections by a y-cable to give me 2x6 > 1x6? I am trying to understand what is protocol here. Getting this info is hard to find.
     
  6. AidenShaw macrumors P6

    AidenShaw

    Joined:
    Feb 8, 2003
    Location:
    The Peninsula
    #6
    https://www.asus.com/us/Graphics-Cards/STRIXGTX960DC2OC4GD5/specifications/

    Asus says 150 watts, which is why it only has one 6-pin connector.
     
  7. filmak macrumors 6502a

    Joined:
    Jun 21, 2012
    Location:
    between earth and heaven
    #7
    The card will draw 75w from the PCIe slot and the rest (+ ~75 watts) from the single 6-pin connector, so there's no need for extra connections.
     

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