Pros: Quite, works well
Cons: Not for Overclocking
Very quiet fan, easy install on AMD.
I have mine in a HTPC on a 45 w AMD AM3 dual core at stock speeds and this thing keeps it cool. Ambient is around 26°C, the CPU idles at 29-30°C, load is around 36°C, and I can never hear the fan.
I gave it 4 flames since it really can't cool even stock clock/volt 125 CPU very well (about equal to the stock heatpipe AMD cooler, but it is quieter than the stock one).