Please help me with the cable: Early MP 2009 + PC 4890

Discussion in 'Mac Pro' started by SolidGun, Jul 3, 2009.

  1. SolidGun macrumors 6502

    SolidGun

    Joined:
    Jul 24, 2004
    Location:
    Twin Cities
    #1
    I have been struggling for a while on this and just spent a good hour at Microcenter looking for this cable needed.
    :mad:
    I understand that I need 2, but only links I have seen are from UK sites.

    I know someone must own 3,1 MacPro and have installed 4890. Where did you get your cable?

    Thank you in advance.


    EDIT:
    http://shop.ati.com/product.asp?sku=3280778
    This is what works right? I can't zoom in enough to see if it is the right size fit as I have no experience with 1900
     
  2. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
    #2
  3. SolidGun thread starter macrumors 6502

    SolidGun

    Joined:
    Jul 24, 2004
    Location:
    Twin Cities
    #3
    Thx for the response Cindori. I was reading through your mega post on 4890 installation and realized that 3,1 has different power cables available and just SATA+power combo out.

    Great help!!!!
     
  4. fstz28 macrumors newbie

    Joined:
    Jun 19, 2009
    #4
  5. SolidGun thread starter macrumors 6502

    SolidGun

    Joined:
    Jul 24, 2004
    Location:
    Twin Cities
    #5
    I have the GT120 and I don't see additional power source that this card uses at all.
     
  6. Cindori macrumors 68040

    Cindori

    Joined:
    Jan 17, 2008
    Location:
    Sweden
    #6
    Wow, powering a 4890 on a single motherboard port? Did not know that was possible! No problems under heavy load?
     
  7. fstz28 macrumors newbie

    Joined:
    Jun 19, 2009
    #7
    Didn't have a problem with it, but i just rewired it.

    Just went back and read the ADC on MP PCIe power and i'm am and idiot and didn't read it well enough the first time:

    When populating the four PCI Express slots, you need to conform to the following total wattage rules:

    Slots one and two (not including aux power), max slot power per slot: 75 W
    Slots three and four (not including aux power), max slot power per slot: 40 W
    All four slots (not including aux power), max total power: 200 W
    Max aux power per connector: 75 W
    Max aux power for both connectors: 150 W
    Max total PCI Express power (slot power and aux connector power): 300 W


    http://developer.apple.com/document...l/HWtech_PCI/Articles/pci_implementation.html

    Thanks for questioning that Cindori, otherwise i never would have gone back and re-read it. and would have probably ran into problems sooner than later.
     

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