You’re probably wondering why IE 11 is used in place of Edge. This shared usage naturally results in lower memory usage by Firefox, though it does increase the chances of a tab crash bringing down other tabs. It is possible to make Chrome act a bit more like Firefox, using the “–process-per-site” argument, but that’s not the browser’s default setting. Chrome’s “content” processes are one-per-tab, compared to Firefox’s shared configuration, which Rahm set up as two, four and eight for the benchmarks.
