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Can I crossfire 3870 X2 with a 4870/4870 X2?

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I have read in some places you can crossfire the 3800 series with the 4800 series as long as they are in the same family. Does that mean, if true, I can crossfire the 3870 X2 with a 4870 X2 or could I crossfire it with a 4870. The 4870 would be in my best interest cause I only have a 22 inch LCD screen with a max res of 1680 x 1050.
 

W1zzard

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no you can't that was wrong info
 
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Thanks for the info WiZ. If you don't mind me asking would my current setup be fine for my 22 inch with some detail on or should I look for another 3870 X2 to crossfire with my current 3870 X2?
 
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on a 22" that 3870X2 is more than fine!
 
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I guess its better with the Gecube 3870 attached to it then!! :D
 
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the only reason you'd want to put another card in there is if you were looking to get better benching scores.... other than that in games you'll be fine at 1600X1080 with those cards... more than ;)

Hell, I only have one 4870 on my 24" screen 1920X1200 and its more than enough.
 
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I don't play benchmarks. About the only time I run them is to test a new card out to make sure there are no issues with it and to test an OC out since I see 3dmark06 or Vantage crash my OC faster than even prime95 or Orthos.
 
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so just out of interest, why do you want another 3870X2 then?
isnt what you got more than quick enough?... I cant imagine you getting less than 60fps in most games maxxed at that resolution
 
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I have a Sapphire 3870 that doesn't want to work when setup in crossfire(I think it has a bad bridge connection) and I've thought about giving my Gecube 3870 to my uncle and cousins cause they play games but with onboard graphics. If I do this I would want to purchase another card and though since you can find X2's at a good price I would get another one of those but if you say a X2 should be fine for me then I guess I'll save my money for a 1TB hard drive.
 
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