pc overheating, please help


Aug 27, 2013
Okay so my graphics card and cpu have been overheating since the longest. All my graphics cards have been reaching up to 100c and my cpu goes up to 80c until it shuts down.
I have since switched out my motherboard 3 times. changed my cpu 3 times also. All amd chips its the 8350
And i have changed my graphics card around 3 times aswell. The only old hardware i have is my psu. I even moved my pc to a different house lol
So what can be causing my components to overheat? People tell me that the psu cant be the problem.
By the way i have applied good thermal paste to the cpu multiple times and i have good airflow and no dust build up.