I have a Surface Book from last year (performance base, i.e. dedicated GTX970 GPU). It is a wonderful machine from design to the incredible amount of hardware t

I have a Surface Book from last year (performance base, i.e. dedicated GTX970 GPU). It is a wonderful machine from design to the incredible amount of hardware they manage to pack into it. A big issue everyone should be aware of though is that it is limited in its ability to drive external displays. I bought it (and use it) as a desktop replacement, but I was quite disappointed to find that to drive even two external displays at 4K it is necessary to drop the refresh rate to 30hz on both. It would be interesting to know if this has been resolved with the new iteration. I ended up buying two DisplayLink devices, and am now running three external displays at 4K (and 60hz), with only the main monitor being run by the Surface Book GPU. I am overall really happy with the machine, as a portable development machine it is a monster that looks and feels fantastic.