I wasn't asking for an economics lesson. My question is about technical differences. Is the PowerColor LCS AX6990 capable of same hashing rates as a regular dounle-slot 6990? Are there differences in hashing capabilities?
My guess would be that since it's water cooled, if you have a decent water cooling system you should potentially be able to overclock it further than a regular card, so that could allow for more mhashes. No idea how far it can be overclocked though as I don't have one.