As far as tower heatsinks go, the 1161 gram Cooler Master Hyper Z600 Black Label heatsink is a heavy beast, but it's also one of the few CPU coolers that can be used passively on certain processors. The cross shape and widely spaced aluminum fins, prodigious number copper heatpipes and 160mm height give it the technical features necessary for effective convective cooling, albeit within specific thermal limits.

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