how can that be a 4870? 56.7gb/s memory bandwidth. 900mhz (effective) memory.. compared to 2.0ghz (effective) or whatever the 4870 is going to have. Im guessing it's an engineering sample with some ddr3 strapped to it. Or its just a plain 4850.
Well, that confirms what I'd been wondering. But it's rather annoding that they'd insist on calling it "GDDR5," when it clearly would be QDR, not DDR. I'm pretty sure the marketting geniuses would have NO problem selling the superiority of it without requiring it be one number higher than GDDR4.