There hot, i know :-)
I have an Athlon 1800XP, no idea what core it has but i bet it's the hot one, at the moment it idles around 50/53 c, under load much higher.
During the summer my idle time was easily 60+ and under load was around 70. For cooling i use Volcano 7.
Did i mention we had a hot summer? ;-)
Ah well...this could be me well sorted for heating this winter :-)