PWM Temps on IS7

What are PWM temps exactly? On a new system I'm putting together with an IS7 my PWM temps are flucuating SEVERELY b/t 50C - 61C under full CPU load. system temps are 35C constant, and CPU is holding at 62C under prime95.

Check out the FAQ done by ABIT Taiwan.

It says that PWM temps can hit 70°C, and can reach up to 120°C. They recommend having better airflow if the PWM reaches above 100°C.