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Thread: MSI R7770-PMD1GD5 3 outputs? (active/passive adapters)

  1. #1
    Join Date
    Oct 2009
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    4

    Default MSI R7770-PMD1GD5 3 outputs? (active/passive adapters)

    Hi all,

    I have an MSI R7770-PMD1GD5. It has three output ports. DVI, HDMI, DisplayPort (using a DisplayPort to DVI adapter). However, I couldn't get it to have all 3 outputs enabled at the same time. Only two at most. Tried under both Linux and Windows.

    After some research, it seems that I might need an active DisplayPort to DVI adapter. At this point I could only assume the adapter I have is an passive one.

    I'm rather new to AMD/ATI cards and DisplayPorts. Is it safe to assume an active adapter will solve the problem?

    Thanks.

  2. #2
    Join Date
    Feb 2008
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    Linuxland
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    5,269

    Default

    Yes, an active DP adapter will solve that issue. It's also what the 3-output cards have inside, like the Sapphire Flex.

  3. #3
    Join Date
    Oct 2009
    Posts
    4

    Default

    Thanks!

    For the record, I bought an Astrotek Active DisplayPort to DVI adapter, and it worked.

    It's funny how this active adapter looks almost identical to the one I already have before which doesn't work, presumably a passive adapter.

    I'm only running at 1280x1024 though. I was told that for a resolution that requires dual-link dvi, I may need a powered active adapter (those with an extra USB plug for power).

  4. #4
    Join Date
    Oct 2009
    Posts
    4

    Default What about 4 or more outputs?

    Quote Originally Posted by pigeon View Post
    I have an MSI R7770-PMD1GD5. It has three output ports. DVI, HDMI, DisplayPort (using a DisplayPort to DVI adapter).
    Just wanted to bump this up a little.

    What would I need if I want to run 4 (or more) screens with this card?

    I read about displayport multistream hub, but they are not on the market yet (and will probably be pretty expensive too?).

    Are there other ways I can do this?

    Thanks again.

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