I come from 10 years in the future, matrox owns all of them. Unfortunately just like terminator, only biological matter can make it through time portal so i can't show you all.
------------------------------I'm a git, deal with it.
I'm going to say since the upcoming 4890 or 4970 or whatever ATI might be calling it this week should be about the same as the 4850X2, maybe a bit more, so I'm guessing the 5870 will definitely be faster than the 4870 X2.
I would be surprised if the 4890 is as fast as a 4850x2 - given the relatively minor changes, it would have to practically perform miracles to beat a pair of 4850s.
As for the HD5000 series, it's impossible to say right now.
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i7 965 @ 4.2GHz (200*21), 1.384V
12GB Corsair Dominator DDR3-1600 CAS 7
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