rx 480 xfx gtr 8 gb 100% fan startup boot/sospension

prejudice AMD support forums are an Italian member holding a xfx rx 480 gtr 8 gb, in practice it is sometimes after the system boot, and is after the suspension start the fans at full speed (100%) then return stop fan. I wonder if this thing is normal. the card works perfectly just has this problem. It's normal . I totally uninstalled drivers and installed the updated ones with no improvement. I await your feedback on