My setups:
HP Proliant microserver for the main lounge (which serves as central media server and output to tv)
4 gig ram
5TB hard drives
GT520 video card
Windows 7
XBMC Gotham nightly with Aeon Nox 4.0.9 and Showcase mod
Second Lounge - Oldish laptop with a gt520
Windows 8
XBMC Gotham nightly with Aeon Nox 4.0.9 and Showcase mod
Content delivered via WiFi from central box
Bar - Old PC hidden away in the cupboard
Windows 7
XBMC Gotham nightly with Aeon Nox 4.0.9 and Showcase mod
Content delivered via WiFi from central box
Bedrooms - old laptops/PCs
Various Windows versions
XBMC Gotham nightly with Aeon Nox 4.0.9 and Showcase mod
Content delivered via WiFi from central box
All I can say is
I think for the content I'll just redownload all the stuff that I want on the server for viewing as I delete things from time to time and then rename them appropriately.