Microprocessors have become much more powerful and complicated over that past thirty-three years, increasing in computational power as measured by processor speed.
At the same time more powerful and efficient computer power units have allowed computers do perform better and at a lower cost. These two considerations together have allowed the fast paced increase in computer performance that we still see today.
In 1983, the IBM Micro 370 was used to develop one of the first home computers which sold for $3790 despite an inability to run graphics.
Computer games were word based at this time (no graphics).
The 66 MHz chip produced in Albuquerque, New Mexico could run simple video like pong (couch potato ping pong). When connected to a VESA video card, you could play 2D video games.
Intel's 66 MHz Processor was powerful enough to allow users to surf the internet through early browsers like the 1994 version of AOL. This processor also allowed the US to be flooded with Japanese arcade games.
Space Invaders: http://www.youtube.com/watch?v=437Ld_rKM2s
100 MHz. A computer with this chip allowed for faster graphics games like Wolfenstein.
1066 MHz. This processor was made to meet many demands some being Internet surfing to downloading and viewing high definition videos.
3.5 GHz. is a high performance processor with better energy-efficiency. Better efficiency prevents your computer from over heating.
130 W. This power supply is equivalent to those in today's hand-held game units (Nintendo).
The 192 W power unit ran cooler than its' predecessors which allowed for faster CPUs.
300 W. It was the first major change in desktop computer enclosure, motherboard, and power supply design in many years, improving standardization and interchangeability of parts.
450 W. The ATX power connector was found insufficient to meet increasing power-line requirements, so they built this as an improved version
300W. It was designed to fit most compact, small form factor PC systems with high-power output in mind.