The SDA38670BT stands out of the mass by it's huge fan and heatsink, held by good, broad clips. Unfortunately it is very hard to install or fit onto many mainboards due to its size.

This cooler is not optimized for maximum performance, but for low noise. The fan is speed controlled for lowest possible noise, the temperature measurement is taken by a thermal resistor which can be fitted inside a hole in the side of the heatsink.

To create even terms, we heated the sensor (while being outside the heatsink, of course) so that the fan always was running at maximum speed.

Performance was a little above average, on par with the TaiSol.

Note that this Heatsink is weighs more than the maximum of 300g specified by AMD !

The SDA38670BC is another standard heat sink, made a little more visually appealing by the aluminium cover on top of the heatsink. It has a good contact area finish and performs average.

This cool-loocking design is the same as the well known ThermalTake chrome orb, of which this seems to be a twin brother. It is only meant for Athlon 1.0 GHz cpus and thus failes miserably with the 1.33 Ghz Palomino used. What it's exact temperature under load would have been is unknown, as the thermal management system of the Fujitsu-Siemens mainboard cut in at 90°C and underclocked the cpu. This behaviour was absolutely wanted, as 90°C is only 5° away from the maximum allowable die temperature. What good would an exact measurement have been if the cpu had been damaged ?

The reason why this cooler (as well as the other two undersized ones) was included in the test is to show what happens when one chooses a cooler not fit for the purpose ...