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Thread: Does X Over SLI still have diminishing returns?

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    Default Does X Over SLI still have diminishing returns?

    I was looking over motherboards yesterday and one was offering a quad channel SLI, but to the best of my knowledge after 2 cards the improvement diminishes significantly, even a second card is slightly unnecessary if your going with ATI or NVIDIA's top of the line from what I've heard.

    But I formed this impression about 6 months ago so I am wondering if games have come out that need that extra power or if SLI has improved too allow significant improvement with each additional video card

    The only other use I can think of for 4 channel SLI is high criteria processing- like super computer tasks such as weather modeling and aerodynamic testing. But I think the software to do that is still in beta being made by some hobbyists.

    I also figured I would explore the subject on the forum since a lot of us are system builders so thanks for the feedback in advance.

  2. #2
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    Default

    The only reason to use more than one graphics card is if you are using a Monitor that is over 24" for gaming, or you enjoy trying to set World Records on 3DMark Programs. Over than, as you mentioned, "Super Computer" type computational tasks.

    SLI hasn't improved enough yet to warrant more that two cards. However, it appears as though ATI has improved enough due to their new EYEfinity technology. You could run 4 ATI 5xxx series cards to power around 24+ displays, all of them rendering the same scene while gaming, watching movies, etc.
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    OC Jedi Master

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    Default

    Yes, definitely diminishing returns, not only in SLI but also Crossfire. I've tested it even with the new Radeon 5870's. It's just not worth it like Shattered said. Only real reason is to break records or build an uber Folding @ Home rig if you go with 4 Nvidia GPUs, for example. Other than that, don't bother.

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