"'Computers are never fast enough.' That used to be the mantra of computer users everywhere. Then, CPU manufacturers hit the 1GHz barrier and, for most users, it stopped being true. Unless you are playing the latest games, performing scientific computation, editing video, or running a high-volume server for dynamic data, modern machines have far more power than what you need.
"Most interestingly, this is even true of a lot of server workloads. An SME's web server load, for example, could easily be handled on a 5- to 10-year-old machine..."
