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SLI With 7950 GX2 & 7800 GTX?

Discussion in 'Nvidia' started by Lupe, Nov 4, 2006.

  1. Lupe

    Lupe Guest

    Hey Folks,

    I've been asked to upgrade a friend's machine. He currently has a
    Winfast 7800GTX and has (on his own initiative) purchased a new EVGA
    E-Geforce 7950 GX2.

    He want's to set them up for SLI with a new motherboard, but before he
    spends any more money - Are these two cards compatible for SLI? I've
    had no personal experience with it and info around the net seems to be

    Would he even see much of a performance increase for his money? On it's
    own the new card does not seem to have that much of a lead on the old
    one unless you get up to very high resolutions.

    Any advice would be greatly appreciated!
    Lupe, Nov 4, 2006
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  2. Lupe

    First of One Guest

    Two cards have to be based on the same chipset to work in SLI. Their clock
    speed and RAM quantity could be different, but the GPU has to be the same.

    So no, a 7800GTX cannot work with a 7950GX2 in SLI. The 7950GX2 on its own
    is about 2x as fast as his 7800GTX, though, so he can just run the GX2 and
    sell the old card.
    First of One, Nov 4, 2006
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  3. Lupe

    DaveW Guest

    You must use IDENTICAL video cards for SLI.
    DaveW, Nov 5, 2006
  4. Lupe

    DRS Guest

    Not any more. Nvidia relaxed the SLI requirements a while back. As First
    of One said, they need to be based on the same chipset, but if one is slower
    than the other then the faster one will be throttled back to match.
    DRS, Nov 5, 2006
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