And all those fans were on top of the liquid cooling system that my G5 2.5 Quad has inside. Even the pump circulating the liquid through radiators couldn't keep it cool, hence the fans needed to blow air through the radiators just like a car.
I'm lucky that mine was never one of the leakers I heard so much about. Ah well, it's all in the past now. As Robert Graves wrote: Goodby to All That (although he was referring to World War I, which was almost as noisy as a G5 Quad).