The other poster also explicitly said his fans are running near silent.

There's no magic sauce that makes a water cooling loop perform well if you've got weak fans on your radiator. Everyone water cools for different reasons. Personally I water cool for silence and my temps are not very good, but they're a heck of a lot better than if I was running ~800RPM fans on air.

He's happy with his results so I don't really see the problem.