I would definitely like to say a few words about the cooler provided by AMD for its Athlon 64 processors.
This cooler recommended by AMD for use with AMD Athlon 64 CPUs consists of a heatsink and a fan. The heatsink footing is made of a copper alloy (high percentage of copper) and has thin aluminum ribs glued to it. The fan features a ball bearing motor and an integrated thermal diode. The fan rotation speed changes depending on the temperature and at about 32oC reaches 3,050rpm, and at 42oC rises up to 6,000rpm. The cooler is supplied together with a Shin Etsu G751 thermal pad. Here I have to draw your attention to the fact that the construction of this cooler ensures very low level of noise produced by the fan, especially compared to the pretty noisy coolers coming with the boxed Intel CPUs. Despite that, the cooling efficiency of this solution is very high.
The AMD Athlon 64 CPU looks very much like an Opteron or Athlon 64 FX:
The difference can be only noticed in the marking of this processor and in the smaller number of pins on the reverse side of the CPU, because Athlon 64 processors fit into Socket754 mainboards and are incompatible with Socket940 mainboards designed for Athlon 64 FX and Opteron processors.
Besides the above listed peculiarities, Athlon 64 boast one more remarkable feature. These CPUs support Cool’n’Quiet technology, which has in fact been borrowed from the mobile CPU versions. Actually, Cool’n’Quiet is somewhat similar to PowerNow! power saving technology, which has long been used in mobile CPUs from AMD. Now this technology has finally come into desktops as well. Cool’n’Quiet support is another big advantage of AMD Athlon 64 over Athlon 64 FX and Opteron CPUs, which do not (yet?) have anything like that.
AMD Company has been paying due attention to lowering the heat dissipation of its desktop CPUs for a long time already. I should say that here they have long surpassed Intel: the fastest AMD processors dissipate considerably less heat under maximum workload than the top Pentium 4 models. Also, these CPUs use special technologies reducing the heat dissipation significantly under low workloads as well. Besides, AMD Athlon 64 processor know to switch to the Halt/Stop Grant mode when the HALT command is performed. As a result, the processor temperature gets dramatically lower if it is not loaded 100%. However, now AMD has made another big move forward. The new Athlon 64 processors feature an even more intellectual algorithm for lowering the heat dissipation.