If you have any long computational tasks, they can be shunted to the other PC.
Compiling large projects, rendering video or photos .. things whose processing time is measured in seconds or more.
Generally, none of these things should be done on a netbook or notebook anyway, with the exception of writing code which can be done on anything with a text editor.
Bear in mind that the slowest link on your PC is the network, so the time required to transfer data back and forth has to be recouped by the superior processing speed of the server / mainframe.
How would I go about shunting such things. The problem I have (or as i see it) is for our magazine project we need a Mac to prevent incompatibilities with thinks like our printer, so i wanted to set up a mini Mac so everything is Mac formated but when it comes to say exporting the final Mag which is a reach CPU hog it would take advantage of the more powerful desktop.
Where ass my Laptop is set up and can do #d Rendering pretty well i'd like to be able to use the desktop for larger project without having to sync render files and object paths on 2 different pcs.