I dont have a lot of airflow in my matx case, i have a b350m mortar, ryzen 2200g with an rx570. My system temp and motherboard temp reach 40-45c before i got a graphics card and played with only the apu. Now the motherboard temp idles at 40c and stays around 55c under load, system temp idles 55c and almost 65c under load. I dont know where they place the sensor for the system temp. Are these temps safe or should i get more fans?