These reports would suggest that the 84C spikes are a bug in the SSD's firmware or hardware. Both Windows and Linux users are experiencing the same issue. https://us.community.samsung.com/t5/Monitors-and-Memory/SSD-980-heat-spikes-to-84-C-183-F/td-p/2002779 https://forums.unraid.net/topic/115536-nvme-overheating/page/2/