Originally posted by Revan Solo
I think it will be cheaper to sell your older PC to buy a new one instead of upgrading it every four year.
If you upgrade it every four years, yes, it might be easier for you but not cheaper. Some parts are still good and functionnal after 4 years(CD player, network adapter, some smaller device) so no, you'll save more by upgrading.
The box is not important as there has been a standardization(sp?) of what can go in there. Pieces are built so it can fit the average box. So no, boxes don't need to change, parts will normally fit just as well.
However, some new generation motherboards are also made for a specific type of box. Those need a change but I don't think we will see any major upgrade from that part.