Whats the difference between SLI and Crossfire?

So what is the real difference? I know SLI is associated with Nvidia cards and Crossfire with radeon. But is there anything else besides that? Do some motherboard support one, but not the other?
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  1. Best answer
    Hi :)

    Precisely what you said... its make, nothing else...

    All the best Brett :)
  2. Best answer selected by kenng.
  3. to run SLI you need a bios hook that the MB manufactures need to pay a premium to nVidia to include this hook in thier bios firmware.

    All MBs can run Crossfire with no extra bios hooks.
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