it could be a host of things ... almost sounds like he got a bad test .. id run the test again... plus benchmarks are not made for gaming rigs.. game rigs just put their muscle in other places than the benchmarks measure
i was just about to say that therascalking. i just looked threw my nvidia user cp and all u do is go to index, look for sli, and it tells you how to set it up. it might not be called index on ur version, just look for a help menu somewhere.