SSD first mounted on Inspiron

If you already have the system, you can look up the specifications from the model number listed in setup (F2 at powerup).  If you don't, you'll need to wait until you receive the system.  What you receive installed in a specific system depends on what the assembly plant has on hand when your system is assembled;  Dell uses models from multiple suppliers, so there's no guarantee you'll get a specific one, and no guarantee that two systems built even one after the other will have the same SSDs in them.

I assume it is this one :

Dell M.2 PCIe NVME Class 35 2230 SSD - 512Go

Thank you for your reply. I have note ordered yet. Before that, I try to assess the kind of ssd used by Dell.
I wonder if the Intel H10 Optane SSD proposed by others manufacturers is faster than the Dell SSD.

You can't directly compare an Optane module with a native SSD.

The SSD stores the data.  The Optane module is just a temporary buffer space -- the data is stored on a spinning hard drive (an Optane module is designed for use with a spinning SATA hard drive, which then becomes the slowest link in the chain).

So, while an Optane module+ hard drive is faster than a hard drive by itself, the system is still far slower than a native SSD.

On the link I sent previously, you will see that Intel has developed a module integrating an SSD (not an HD) coupled with Optane. This module is used by brands like Asus for instance.

Anyway, I than you very much for your answers.

An optane module is not a true SSD.  It acts as a cache for a much slower hard drive.

Any M.2 SSD, particularly NVMe, will be faster than any spinning hard drive cached by an optane module.

Also realize that asking about performance on a system at this level is a bit like asking whether a Honda Fit is faster than a Mazda 2.  They're both economy models, with performance levels corresponding to that.

I agree, but I thought of the integrated Intel SSD with Optane.

https://www.intel.co.uk/content/www/uk/en/products/memory-storage/optane-memory/optane-memory-h10-solid-state-storage/optane-memory-h10-32gb-512gb-m-2-80mm.html

which must be faster if the SSD is the same as Dell's one.

So my first question remains. Is Dell using QLC SSD ? or TLC, or what else ?

Just replace the Intel Optane module with a NVMe SSD and use it for your OS and applications. You won't be disappointed at how fast loading and boot times will be. For me and my Inspiron 3583, it took just under two minutes to boot to the desktop with the stock hard drive. With a NVMe SSD, it now takes ~15 seconds!

Note: Make sure you disable the Optane memory from the Rapid Storage Technology application before removing it! See page 81 of the service manual (PDF).

@Kflash08

I have not yet ordered my Inspiron. I was just wondering whether the originally mounted SSD on the Dell 3500 series was fast. On the Dell site, there is absolutely no information on the technology, the class, etc...