Because it runs at such low temperatures I’m guessing even without changes they could add better cooling and clock it up. Stack it up. It really only has 4 high speed cores right now and much much more amenable to adding cores like Intel has been doing. Even two years from now it’ll be incredible in my mind. Anxious to see what the iMac gets.
I upgraded my graphics card but still just have 8G of ram because it’s plenty fast enough. I want a new version of my Mac Pro that doesn’t cost $8000.