Quote Originally Posted by faster3200 View Post
Compare this graph to this graph.
Ok, I'm very confused. After reviewing those graphs, why is the 655 reputed to be such a better pump? Isn't there a point in a low restriction system that the law of diminishing returns comes into effect for GPH? Is it necessary to really move that much more water? I will say with that data, I'm even more pleased with my 355 + XSPC res top than I already was!