Currently running a Sapphire HD 4850 rig and am looking at adding the second HD 4850. (old ASUS DH Deluxe 975X MB) I know that the Crossfire is mucho better now, but what combinations of cards are valid?
1) 2 of the exact same model?
2) 2 of the same brand, aka Sapphire?
3) any 2 HD 4850 cards by whatever manufacturer
(This is assuming the original clock speed and memory. 625MHz, 993MHz memory, 512MB ram.)
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Second question is, ok, what about the newer versions with higher clock speeds and more RAM? Sapphire has a couple 1 GB cards. Would the connection treat them as 2 512GB cards? Can a 512MB version be CF'd with a 1GB version?
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Third, some HD 4870 cards getting down around the <$200 price range. Is it even worth Crossfiring a HD4870 and HD4850 ?? Would the cards run at each their own specs? Or would the HD4870 be throttled down?
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1) 2 of the exact same model?
2) 2 of the same brand, aka Sapphire?
3) any 2 HD 4850 cards by whatever manufacturer
(This is assuming the original clock speed and memory. 625MHz, 993MHz memory, 512MB ram.)
==
Second question is, ok, what about the newer versions with higher clock speeds and more RAM? Sapphire has a couple 1 GB cards. Would the connection treat them as 2 512GB cards? Can a 512MB version be CF'd with a 1GB version?
==
Third, some HD 4870 cards getting down around the <$200 price range. Is it even worth Crossfiring a HD4870 and HD4850 ?? Would the cards run at each their own specs? Or would the HD4870 be throttled down?
==
). The faster ones will perform as the slowest ones though.
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