I'm not sure if anyone else has done this yet, but I upgraded the internal SSD for my series S with one from a broken series X I purchased on ebay.
If you want to do this swap, you'll need to clone all of the partitions from the original 512gb ssd to the 1tb ssd with the exception of the user...
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi