Even though it says 32gb SSD, that SSD is used for caching purposes, you CANNOT store anything on that SSD.
Windows is loaded on the main hard drive which ofcourse will be far slower but the thing is that you can upgrade the SSD. I didnt want to, and returned this product back to amazon. I have researched online for few hours and found out while there is a version of XPS15 that has 32gb SSD with windows loaded there, it is more of a gamble buying this laptop, in terms of which one you will end up with.
I bought it from amazon warehouse deals and to be honest if you upgrade the SSD and clone the HDD using macrium, then format the hard drive, you will be far from satisfied.
That will cost a lot of additional money so beaware. Also beaware when buying the SSD, I have now forgotten which m.2 size fits in this and wheter its sata or NVME so please do that research beforehand.