[citation][nom]Crashman[/nom]If you read the entire page, it says that.[/citation]
Yes, it does, but the test system also uses some of the highest end components available for desktop systems to date, so unless the conclusion comes from the future it can be considered flawed.
It doesn't mean that it isn't true, you just can't do anything about it at this time, four way SLI with such high end cards just seems wasteful. You threw at it an overclocked six-core i7 CPU, arguably one of the best motherboards available, some nice sticks of RAM and up to date software (OS, drivers, apps, games).
Technically the conclusion is true, but realistically it's really not. Unless you can prove to us that a dual socket workstation-style system will take advantage of the fourth GTX480.