Question about power needs for graphic card

Discussion in 'Mac Pro' started by Macx80, Jul 16, 2017.

  1. Macx80, Jul 16, 2017
    Last edited: Jul 16, 2017

    Macx80 macrumors newbie

    Macx80

    Joined:
    Jul 14, 2017
    #1
    Hi
    I look all over the net about info in how to connect different cpu card like gtx, some need only 6 pin connector, others need a 6pin and 8pin and some just 8pin, my question is when need a 6pin where draw the power?, when it 8pin where plug it? and when it both same question. i read it not a good way to take a mini 6pin to 8pin. I am confuse between all cable pin and power needs.. some on know the safe way to plug? I want a gtx1060 and it say it need a 400w power computer, but mac pro is only 300w. i saw most card require a 400w.
     
  2. flowrider, Jul 16, 2017
    Last edited: Jul 16, 2017

    flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #2
    The GTX 1060s that I am familiar with come with either one six pin connector or one eight pin connector. Both will work just fine on a cMP. I assume you are speaking about the 5,1 cMP, since you didn't specify. For one six pin connector you will need one mini 6 pin to 6 pin cable, like this:

    https://www.amazon.com/JacobsParts-...280&sr=1-3&keywords=mini+6+pin+to+6+pin+cable

    Plug it in to the the MB (plug A) as described below:

    Mac Pro 2010 Tech Guide 145.jpg

    For one eight pin you will need two cables as described above, plugged into plugs A & B on the MB and an adapter like this:

    http://www.ebay.com/itm/nVidia-DUAL...727235?hash=item4b06fc0683:g:fPgAAOSwAKxWT8SJ

    Lou
     
  3. h9826790 macrumors G3

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #3
    The MacPro has a 980W PSU, not 300W, 300W is just the total power available for those 4 PCIe slots. And there is another 150W for the 2 mini 6pins, and another 530W for the CPU, RAM, HDD..... GTX1060's power draw is nothing for the cMP. The cMP can actually drive a TitanX without assist from any external power supply.
     
  4. Macx80 thread starter macrumors newbie

    Macx80

    Joined:
    Jul 14, 2017
    #4
    Ahh ok ty, iam not a expert in electronic i try to figue out how it woks. ty flowrider for the pics.
     
  5. Macx80 thread starter macrumors newbie

    Macx80

    Joined:
    Jul 14, 2017
    #5
    i find a cable that can replace the 2x mini 6pin to 6pin and the dual 6pin to 8 pin for a 8pin card here the link: https://www.moddiy.com/products/App...8%2dPin-Video-Card-Cable.html?setCurrencyId=4
    correct me if iam wrong but this can replace all the 3 cable for a 8pin card? or you think that cable is not safe because it a mod?
     
  6. h9826790 macrumors G3

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #6
  7. Macx80 thread starter macrumors newbie

    Macx80

    Joined:
    Jul 14, 2017
  8. flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #8
  9. flowrider macrumors 601

    flowrider

    Joined:
    Nov 23, 2012
    #9
    Yep, I probably should have added that to my post.

    Lou
     

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