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.
Newegg is oos on 5970's. The resale for a 6990 is better you can expect at least 800-850 if you sell in this forums marketplace. This has a warranty and I believe they are more reliable. Those are the reason I came up with there could be more.