2 NVMe SSD without Heatsink. The master graph above reveals the sole advantage of using your NVMe SSD bare without heatsink. Having the controller and NAND flash exposed to the airflow within the PC case allows the bare drive to run cooler at idle compared to two out of the three heatsinks.
Does NVME require heatsink?
It is a much needed aesthetical and functional heatsink for many PC owners. It is not a secret that M. 2 NVMe SSDs can overheat very easily and be subdued to thermal throttling, thus losing performance. The heatsink brings 7-30°C improvement in SSDs temperatures, or even more with sufficient air flow.
Does 970 Evo Plus need a heatsink?
M. 2 NVME ssds like the SAMSUNG EVO 970 should be used with a heatsink... motherboard makers provide them for the slots on their boards that can run the NVME spec. NVME drives can get very hot under sustained use and will suffer performance issues if run too hot...