This is want I have been dreaming about. While sitting by the desk, I want to use desktop class CPU since there's no need to save power. However I don't want to

This is want I have been dreaming about. While sitting by the desk, I want to use desktop class CPU since there's no need to save power. However I don't want to drag a workstation class laptop while traveling. I've tried having two different computers. Dropbox makes it easier, but still you have the problem that you need to maintain two separate systems. I think technically this is not so far fetched. With the portable USB3 memory you could almost achieve it. This would just require that the operating system supports waking up in a bit different hardware (at least different CPU, possibly also different amount of RAM).