Intel Celeron 900 –P3 low temperature
“Intel Celeron processors allow the use of AutoHALT, Stop-Grant, Sleep, and Deep Sleep states to reduce power consumption by stopping the clock to internal sections of the processor, depending on each particular state . “
Thermal protection: yes

K7 DURON/ATHLON high temperature
No AutoHALT/Stop-Grant, unless using DRAGNOTT http://www.pcdvd.com.tw/showthread.php?t=531204
Sleep, and Deep Sleep??
Thermal protection: none

K8 SEMPRON/ATHLON low temperature
AutoHALT yes
CNQ yes
Sleep, and Deep Sleep??
Thermal protection: yes