I have two Gigabyte HD4850's on a P5Q pro. The manual says 2 bridges are necessary but some fora sayit isn't. Can anyone clear this out?

What's the benefit you get from two bridges over having only one?

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Use two bridges assure more stability. But the real meaning of the second crossfire is to add a third card.

Also provides more stability in benchmarks (second link)




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    Can you add a reference for this? Is there some official source that has this information? – nhinkle Apr 8 '12 at 21:26
  • There, I can't add more references because of the limited reputation. – Sein Oxygen Apr 8 '12 at 22:45
  • Thanks @SeinOxygen for adding more info! You'll get the ability to add more links soon. – nhinkle Apr 8 '12 at 22:47
  • Intel chipset + HD 4850s + 1 crossfire bridge = yes to crossfire (some of the earlier HD xxxx require 2).

  • Nvidia chipset = crossfire not possible.

  • AMD chipset = crossfireX (no bridge needed depends on chipset & GPU) or crossfire with a bridge is a yes.

  • 890gx,890fx, 990x or 990fx = crossfire faster and the 990s will SLI too.

Last but not least, there is asymetrical crossfire with an AMD APU (Llano) and specific GPUs.

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