
I've got one of these:
http://www.overclockers.co.uk/showproduct.php?prodid=HS-006-SY
on my x2 4200. My temps are approx 45 idle and 55 full load. You dont even have to use the provided fan, I'm not sure it makes much of a difference. Even so the fan is very quiet, even at full speed.
Yer that looks a bit high for AMD, my old x2 4400 @2.7 died at 60c.