M.2 Drives Have An Overheating Problem

[SteelCrysis]

https://www.techpowerup.com/reviews/ADat..._GB/7.html
https://www.techpowerup.com/reviews/ADat...GB/15.html
It's sad that TPU downplays the overheating and gives the SSD an Editor's Choice award.

We recorded a thermal image of the running SSD as it was completing the write test. The hottest part reached 102°C, which is almost 30°C higher than what's reported through the driver's own SMART temperature monitoring.
...
My recommendation is to always install the heatsink, it's included for free anyway and really easy to use. This will give you peace of mind, sou don't have to worry about thermal throttling. Thermal throttling can still happen, even with the heatsink installed, but only after writing data full-speed for over 10 minutes, a duration over which you'd have filled up most of the drive's capacity.

http://www.guru3d.com/articles_pages/tos...iew,6.html
http://www.guru3d.com/articles_pages/tos...ew,21.html
A SSD should never idle at 60 C.

During our test benchmarks stress tests with a high-stress workload, we monitor the SSD temperature. The unit idles at roughly 60 Degrees C, the peak stress temperature measured hovers at roughly 75 Degrees C. At that temperature the controller starts throttling down to meet that 75 Degrees C maximum temperature, at the cost of performance. We advice good airflow inside your PC, that or the usage of an M.2 SSD heatsink as offered with many motherboards to bypass this problem.
...
Under stress at the same conditions the temps rise quickly and once it hits 75 Degrees C, the controller will down-throttle in performance to meet its temperature target. This is fixed with merely a decent amount of cold airflow inside your chassis. Also, many modern motherboards these days offer some form of heatsink based cooling, if you use that, it's not an issue whatsoever. However in a poorly ventilated chassis, under stress, as-is, this SSD will throttle down in performance with even a moderate workload.

https://www.techpowerup.com/reviews/Cruc..._TB/7.html
I don't know what's sadder, that this isn't even a PCIe drive but a SATA III drive, or that TPU refuses to highlight the fact that a SATA III SSD should never hit such high temperatures, especially when the label has a copper strip in it to act as a heatsink.

During the write tests with a fan, we see no performance drops. When the drive is without cooling, its temperature will climb quickly. Once it reaches 80°C, write performance will drop down to around 300 MB/s and stay there for as long as the drive's temperature is at 80°C. Higher temperatures don't happen due to these reduced write speeds. Still, consider that 80°C is only reached after a constant full-speed write of 100 seconds. At the drive's speed of 450 MB/s that means you'd have to write 45 GB of data without pause to get the drive to throttle.