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I have a Samsung PM991a NVMe SSD, and during idle it's pretty cool (around room-temperature).

However, during filecopy (10ish GB total size), it gets pretty warm (ie. HOT):

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Is 100 °C considered too hot for an SSD? I don't mind having it, BUT I want my data safe in case of this temperatures when I'm copying files for longer periods of time (this is 1TB size, so I can copy files for half an hour or even 1 full hour)?

So in a short simple question: can an NVMe SSD survive 1 full hour at 100 °C without data-loss, or it's way above its limits so I can only have 50-50 chance?

Daniel
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2 Answers2

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The article Samsung PM991 M.2 NVMe PCIe 3.0 SSDs has this specification :

Temperature : Operating 0°C to 70°C Non-Operating -40°C to 85°C

The answer is then that your SSD is exceeding its maximum temperature range, which is not at all recommended.

The question of how long this SSD will be able to function until breakdown cannot be answered. I suggest not finding this out empirically...

You should look at the airways in your computer and clean them well, because such temperatures are very rare, so something is wrong.

Another article from EaseUS, a reputable company, SSD Temperature Range: Everything You Should Know adds this :

Simple read/write jobs do not significantly raise the temperature. So, unless the SSD temperature exceeds 70°C, it normally isn't a cause for alarm.

Your temperature much exceeds this limit.

harrymc
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It's not entirely suprising, writing is a particularly demanding process where a high voltage injects electrons into an isolated gate within the silicon substrate.

Whether it is "bad" depends exactly what that specific area of chip is doing. If it is the charge pump PSU inside the chip then it's probably fine, similar for the controller. The NAND itself would be better off cooler.

It's difficult to know exactly what that bit does without dissolving the plastic away and examining the circuitry in detail but if it works then it works.

A heatsink may help, at least keeping performance up. Many faster SSDs do encourage their use as they may start throttling at high temperatures.

Mokubai
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