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Thread: AMD 790GX Build

  1. #1
    Senior Member
    Join Date
    Mar 2005
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    AMD 790GX Build


    Just built a new system with a Biostar 790GX motherboard, Phenom 2 X3 720 and a Radeon 4850.
    Hoping you guys could answer a couple of questions for me.

    1. Do you need to connect the auxiliary 4-pin graphics power connector or is that just if you're running crossfire?
    2. Can you set it up so that the top PCI-E slot is your primary graphics card? It wouldn't detect it when i tried it as that is the Slave slot. The bottom of the motherboard is a bit cramped and i'd rather give the gfx some better cooling. Do you need to stick that little paddle board in the other one?

    Thanks in advance

  2. #2
    Senior Member
    Join Date
    Sep 2006
    79 times in 70 posts

    Re: AMD 790GX Build

    molex 4pin is optional, square 4pin is required.

  3. #3
    Senior Member
    Join Date
    Sep 2007
    22 times in 22 posts
    • s3ds's system
      • Motherboard:
      • PK5-WS
      • CPU:
      • E6850
      • Memory:
      • 4GB Kingston
      • Storage:
      • 15k Seagate SAS
      • Graphics card(s):
      • Nvidia Quadro
      • PSU:
      • 500W Enermax
      • Case:
      • Coolmaster Centurion
      • Operating System:
      • XP SP3 or Ubuntu
      • Monitor(s):
      • TWIN 22" NEOVO
      • Internet:
      • o2 LLU

    Re: AMD 790GX Build

    I believe the paddle board can be put into the master slot ( lower ) to make the
    top slot x16
    I dont have the motherboard or manual as i have finished building the pc
    Experience is something you don't get until just after you need it.

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