CPU stuff, let's see... For a dev, maybe running their own program, compilers (sometimes with a lot of optimization passes), interpreters for python/ruby, an ID

CPU stuff, let's see... For a dev, maybe running their own program, compilers (sometimes with a lot of optimization passes), interpreters for python/ruby, an IDE with indexing over the whole project, running the OS itself, tests, browser tabs... None of that runs on a GPU! (except part of the browser rendering). CPU is fairly important.