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Swapping 4870 x2 for 4890 xfire

AllHopeIsGone1

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Right. I'm not entirely sure what to do. Basically, I am going to be putting in my 2 ASUS 4890's in xfire.

1. Do I need 2 ATI bridges on?

2. Can you give me steps on what to do. Do I just shut down the PC, remove my 4870 x2 then install the 2 4890 then boot up and I'm ok or do I have to uninstall drivers THEN remove 4870 x2 then install new cards then re-install drivers?
 
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ShadowFold

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Uninstall ALL drivers(reinstalling windows is easier but not really needed)
Put both cards in, it will ask to enable crossfire
It works.
 
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I get no thanks.:(:p Your way might work Shadowfold, but my way is more thurogh. Whatever works I guess...
 
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this is purely out of curiosity, but why is it you need both xfire bridges? when you use 3x or 4x xfire i "saw" that it was 1 ribbon or bridge from card to card, does it just help with communication to use 2 when just setting up 2x xfire? more lanes to send data on between the 2?
 

AllHopeIsGone1

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Wooo, both are in! Drivers must suck 'cause lower FPS a little then my 4870 x2 in Crysis.
 
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Wooo, both are in! Drivers must suck 'cause lower FPS a little then my 4870 x2 in Crysis.

maybe the driver settings are just borked a little and need some tweaking.
 
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you went from
2 4870 or
4870x2 ?
 

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the space threw me off
4870x2
4870 x2
 
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u used to but with this series you don't need both connectors.
 
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