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Sirpent · 06-13-2002, 04:08 PM

I think what we are discussing here is how to achieve the best cooling effect with a fixed cap on the noise level, or how to achieve the required cooling effect producing as little noise as possible (no real difference between the two formulations). The noise is mostly caused by turbulence in the air passing through the radiator, not by friction in the bearings of the fans (assuming the fans are decent). Now, the level of this turbulence noise is a function of the air flow through the radiator (we ignore shrouds and other things that can decrease/increase turbulence - their effects for one and two fan configurations are roughly the same). The cooling effect is also a function of the air flow through the radiator. The bottom line: there is no difference between using a single fan and a push-pull arrangement, same noise level = same cooling effect.

06-13-2002, 04:08 PM	#6
Sirpent Cooling Neophyte Join Date: May 2002 Location: here, there .... Posts: 20	I think what we are discussing here is how to achieve the best cooling effect with a fixed cap on the noise level, or how to achieve the required cooling effect producing as little noise as possible (no real difference between the two formulations). The noise is mostly caused by turbulence in the air passing through the radiator, not by friction in the bearings of the fans (assuming the fans are decent). Now, the level of this turbulence noise is a function of the air flow through the radiator (we ignore shrouds and other things that can decrease/increase turbulence - their effects for one and two fan configurations are roughly the same). The cooling effect is also a function of the air flow through the radiator. The bottom line: there is no difference between using a single fan and a push-pull arrangement, same noise level = same cooling effect.