I am helping a friend with a build as his recent desktop died. His priorities are having an ITX build preferably using the Fractal Node, a proper quad-core and a reasonable amount of RAM (he's a scholar and statistical analyses of the kind we do often need it). He has $500-$600 Australian to work with. The best priced store near us is MSY. This build includes a GPU that is good enough for casual gaming (mentioned he'd prefer to have one), but he can live without a dedicated GPU if needs be.
He has a HDD, screen, keyboard and mouse already.
Any recommendations, comments or things we should know? This is my first build in this form factor as all of my machines have been ATX gaming rigs.