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AMD 6670 Crossfire - msi k9a2 cf // need help


I want to crossfire two of 6670's on a Msi k9a2 cf mainboard.
As i know, when i connect 2 cards on the PCI-EX buses of k9a2 cf, they work as 8x/8x.
Will it cause a problem for 6670's? Is my mainboard supports 6670 cf technology? And i need any CF bridge?

If my mainboard is ok for 6670 CF, im thinking of buying them.

Mainboard: Msi k9a2 CF
PSU: OCZ stealthpower 400w
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  1. Best answer
    No it will not cause a problem. 6670s are generally not fast enough to saturate 8x PCI-E lanes so you won't have any noticeable performance drop over having two 16x lanes. With those cards you do not need a CF bridge, but if you happen to get two cards that have the top CF connectors then I say just go ahead and use one.
  2. Really though rather than buying two 6670s you're better off just getting a single 6850. Of course, if you already have one 6670 then adding a second one will give you a decent increase in performance.
  3. Thanks for the reply.

    Last question: Should i prefer 6670 CF or one 5870?
  4. Definitely one 5870 assuming your PSU can handle it. Since 5870s are rather hard to find though I recommend getting a 6870 instead as it's more available, uses less power, and it should be easier to find another one latter on if you want to crossfire it.
  5. Best answer selected by lgka.
  6. This topic has been closed by Mousemonkey
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