I gotta ask, what's the point of buying one of these for $729 when Newegg has the 5970 card listed at $499? They both top out right about the same place in terms of hash rate. Is the 6990 less of a power draw? Still, the $230 difference in price is pretty significant.
The 5970 has limited resale value compared to the 6990 because outside of bitcoin mining people aren't looking for them for gaming. The 5970 from Newegg is also OEM with 30 days warranty.