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AMD 6670 Crossfire - msi k9a2 cf // need help

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  • MSI-Microstar
Last response: in Graphics Cards
January 14, 2012 4:54:54 PM


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

More about : amd 6670 crossfire msi k9a2

Best solution

a c 109 U Graphics card
January 14, 2012 5:09:18 PM

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.
a c 109 U Graphics card
January 14, 2012 5:10:37 PM

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.
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January 14, 2012 5:13:11 PM

Thanks for the reply.

Last question: Should i prefer 6670 CF or one 5870?
a c 109 U Graphics card
January 14, 2012 5:20:38 PM

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.
January 24, 2012 2:11:46 PM

Best answer selected by lgka.
a c 332 U Graphics card
January 24, 2012 3:02:09 PM

This topic has been closed by Mousemonkey