There's a few things we have on newer computers that we didn't have on older computers: * regular software updates -- more features and larger codebases runnin

There's a few things we have on newer computers that we didn't have on older computers: * regular software updates -- more features and larger codebases running on the same machine * larger quantities of software running at the same time -- on older machines multitasking either wasn't as common or wasn't even possible, and as time went on more software became available as did the ability to run more of it at the same time. * the internet -- pages on the internet get larger and more demanding all of the time, while the capability of any given piece of hardware stays constant. * active cooling and thermal throttling -- hardware can actually run slower if it gets dirty