Just got word from Rye that FrostyTech has reviewed the Zalman CNPS6500-Cu heatsink.
The recipe card for the CNPS6500Cu reads like this; take 52 copper fins, place in a machine that presses them together under high pressure, bolt in place with stainless steel screws, mill base razor smooth. There is certainly no denying that Zalman have hit upon a good thing, and the 6500-series is proof of that.
This time, the full-copper CNPS6500Cu weighs in at 910 grams, or almost 1 kilo! For a heatsink, this currently is the heaviest cooler we have ever reviewed. Socket clips are out of the question, and even the standard socket 478 HSRM is left out. This time, the heatsink is bolted directly to the mainboard, and there is no way it's coming loose... we hope. - FrostyTech