Cooler Master H411R and H412R squeeze four heatpipes into tiny towers
by from Techreport on (#34MNP)
There are a huge number of factors that influence heatsink performance, but one of the most obvious for tower coolers is the number of heat pipes they use. That could be the reason that Cooler Master's latest Hyper H411R and Hyper H412R 92-mm tower coolers have four copper thermosiphons, up from three in the preceding Hyper 103. The new units are fundamentally the same; your choice of model simply determines whether you get a white-LED-equipped fan or one with no lights at all.
Cooler Master Hyper H411R (left) ...