I did some tests (about a year ago). If I remember correctly, my laptop with 8 GB RAM wrote almost 5 TB to disk during IBD. That's a fraction of what a modern SSD can handle.
In my other test, with 32 GB RAM and enough dbcache on a server with HDD, the disk speed was not a problem at all. More RAM can make up for a slower disk, problems arise when your disk is slow and you don't have enough RAM.