Just wanting to post some feedback...
This model can run 2 external monitors, as well as the Retina screen simultaneously (giving you a total of 3 monitors)
They mention you can do this on the website via DisplayPort, however I would like to confirm that I am running 2 external monitors, but with one DisplayPort, and one HDMI. It does seem to heat up quite a bit though, but it doesn't feel abnormal.
The machine has been plenty fast enough so far (I haven't really used my desktop this year), but there have been a few issues
- Keyboard is not aligned, making the keys feel broken when typing (posted a thread about this)
- USB is flakey, and 2 ports is very limiting. I have a Focusrite 2i4, and it often restarts this thing so that my audio goes off (absolutely infuriating) and also I have issues with external keyboard/mouse drivers. Often various combinations won't work, like when the external keyboard is connected, the internal keyboard and touchpad stops responding. Or visa versa. Yesterday I unplugged my macbook to take it to a meeting in another room, and the keyboard simply wouldn't work. I couldn't force shutdown or anything. I had to walk back to the room with the keyboard, and plug it in and out, to get it working again. I am using OS X 10.9