Using molex cables to power video card

Discussion in 'Mac Pro' started by hukko, Apr 21, 2015.

  1. hukko macrumors newbie

    Joined:
    Apr 21, 2015
    #1
    I have a Mac Pro 1,1 Mid 2006.

    To start using OS X Yosemite I had to buy new video card, so I bought MSI GTX650 TI OC 2GB. According to Nvidia web site my GPU Max TDP is 110 W, unfortunately MSI doesn't reveal whole video card power specification. I understand that generally accepted consensus is that the two 6-pin connectors on motherboard provide up to 225W. I didn't have mac specific PCI Express 6 pin power cable so I used Superdrive molex cables with molex to PCI express 6 pin adabter.

    I don't need Superdrive so is it safe and does super drive molex cables provide sufficient power to my video card or I should better buy that mac specific power cable.
     
  2. IowaLynn macrumors 6502a

    IowaLynn

    Joined:
    Feb 22, 2015
    #2
    OWC and Amazon carry those cables for very little.
    http://smile.amazon.com/PCI-e-Power-Cable-nVidia-Video/dp/B002UR1654/

    Everything you want to know about different cables:
    http://www.playtool.com/pages/psuconnectors/connectors.html

    > If your power supply doesn't have a 6 pin PCI Express cable then you can use the adapter shown above on the right to convert two 4 pin peripheral cables into a PCI Express cable.
    >
    > http://www.playtool.com/pages/psuconnectors/connectors.html#pciexpress

    Also,
    http://www.svc.com/powersupplyguide.html
     
  3. MacVidCards Suspended

    Joined:
    Nov 17, 2008
    Location:
    Hollywood, CA
    #3
    Go ahead and blow $4.75 on a cable or two.

    Crazycon has them on EBay for that much, good quality and reliable seller.
     
  4. hukko thread starter macrumors newbie

    Joined:
    Apr 21, 2015
    #4
    Amazon doesn't ship to Estonia and on OWC it costs 20 $. If I buy from ebay it will take 1 month to arrive.

    I am already using this adapter. My question is: can I keep using "Superdrive 4 pin peripheral power cable" or it is better to buy mac specific power cable. I know that Mac Pro motherboard 6-pin connectors provide up to 225W, but does same apply to "Superdrive 4 pin peripheral power cable"
     

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