FrostyTech has posted a Taisol CCP445172 Copper Pentium 4 Heatsink review

The Taisol CCP445172 is a full copper Pentium 4 heatsink sporting a manufacturer listed thermal resistance of just 0.329C/W and weighing in at nearly 700grams. This is a big heatsink, and one of Taisol's newest for the 3.06GHz Intel Pentium 4 platform. The heatsink arrived in our hands with HSRM and metal backplate PCB support. Because the clipping mechanism is integral to the fan and fan shroud you are pretty much stuck with a 70mm sized fan. Some users like to drop in larger fans which can then be operated at slower (less noisy) speeds with hopefully little reduction in overall air flow. In this instance because the plastic fan frame plays a functional role with the clipping system that type of fan upgrade just isn't possible.

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