While I'm not sure what is considered a reasonable temperature, my Samsung 990Pro hovers around 50C most of the time but it does have a heatsink.

Do you have a heatsink installed as well?

If you are using CrystalDiskInfo, take note of the color indicator, blue is a good health color.  For consumer SSD, the normal temperature is 40° to 50° C.  Under heavy usage of large files written, temperature can reach up to 65° C.  When reaching 70° C, the SSD protection will trigger write performance throttled until the temperatures drops to safe zone. 

A prolong duration of 65° may shorten the health and data retention of your SSD.  I suggest to add a heatsink or move the drive to a PCIe x4 slot with an adapter.  

@BarryBonds64,

Well, it is within the 'normal' range. Spec's for the SSD:

See this web page, https://www.uk.shi.com/product/39170115/KIOXIA-BG4-Series-KBG40ZNS256G

My XPS 8930 has a WD_BLACK SN770 2TB 2000.3 GB, (nVME) without heat sink, installed, and when just checking mail etc, it's temperature, according to Crystal Disk Info V8.17.3 x64 runs 35 C. When I am running Photoshop or Lightroom it can run as high as 52.

This is my 'C' drive and only has the OS and software installed on it that I cannot install on another drive (ie" Adobe products). It contains Windows page file, but this is rarely used, as I have 32GB Ram

All other software gets installed onto a 'D' drive which is a Seagate Barracuda conventional HD.

I then store all data on a 3rd drive 'F' and have a 4th drive exclusively for Lightroom and its catalogue and images.

This disk setup seems to put less 'strain' on the 'C' drive as there is less need to read and write to it during normal operations, the exception being the C:\Users folder.

@BarryBonds64 

I have an XPS 8930 SE with a 1 TB Intel NVMe SSD.  At idle, it is usually around 30°C.  When it is creating system images or doing large file copies, it can hit 55°C.  I have Hard Disk Sentinel Pro continuously monitoring the temperature and health of all of my drives on both computers.  I find it to be an excellent product.

https://www.hdsentinel.com/hard_disk_sentinel_professional.php

I have no connection to the company other than as a paying customer.

I would be inclined to check just how "busy" your SSD is.  The Task Manager can show you that.  I am not familiar with the products that you mentioned, but they must have the capability, too, to monitor disk activity.

Have a great day.

Regards,

Phil

@Element115s4​ 

I have a Dell Optiplex CPU fan & heatsink.

@Chino de Oro​ 

I'll be considering moving the drive as you recommended; although I'm not sure I'd be qualified to do so.  

I opened it up today, and did a thorough cleaning (air compressor).  There was quite a bit of dust, so I'm certainly glad that I did that; and will do so more frequently going forward.  I'm a bit disappointed though, that I was only able to get it down to 59%.

I also have some homework to do, as I don't understand what qualifies as "Good" at 69% according to CrystalDiskInfo.

@maxaryaman2004​

This is my 'C' drive and only has the OS and software installed on it that I cannot install on another drive (ie" Adobe products). It contains Windows page file, but this is rarely used, as I have 32GB Ram

All other software gets installed onto a 'D' drive which is a Seagate Barracuda conventional HD.

I then store all data on a 3rd drive 'F' and have a 4th drive exclusively for Lightroom and its catalogue and images.

This disk setup seems to put less 'strain' on the 'C' drive as there is less need to read and write to it during normal operations, the exception being the C:\Users folder.

Same; though I have x2 WD external hard drives.  I recently thought something was wrong with the computer, maybe it was a recent Windows update, buying a new 18 TB external hard drive (that runs too hot), or the most recent NVIDIA driver update (bingo).  I did a factory reset - which turned out to be unnecessary, but in the process, I'd been wanting to free up space on my C: drive, and moved what I could over to my D: drive (similar to what you've desribed).

Having said all of that, even as I'm typing this, I'm only (actively) using Internet Explorer, so the temperature reading 57 degrees celcius (currently), seems excessive.  I don't play games on my PC, and the most taxing things I would ask my PC to do, would be to use a video editing program (Filmora), or simply transferring files from one drive to another; which I only do once in a while.

@ispalten​ I appreciate the link (specs).  Thank you.

I just wonder about the disparity between my PC running ~10 to 20 degrees higher (idle or just reading stuff on the internet) than other PC's that are doing the same thing.

@garioch7​ 

I had thought about the Task Manager; and too many things running at once.  Here's an example.  I appreciate the link to the product; I might check it out.