(1) disk performance - but it looks like the 512GB SSD is getting > 4000MB/s in both read and write and this is almost certainly "good enough" for application and OS use. (2) SSD wear - I plan on using external drives for the large data writes, so the internal should have only "normal" OS and application writes, and mostly data reads, so I don ... More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.