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→The 1980s to Mid-1990s: Gate-arrays, used in computers with CPUs built from discrete logic, are semiconductors, but did not have the same density as VLSI CMOS |
→The 1980s to Mid-1990s: Not every System p machine is a large MP machine - there are blade, rack and desktop models. System z is a mainframe, not a supermicro. |
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During the 1980s microcomputers began displacing "real" computers in a serious way. At first, price was the key justification but by the late 1980s and early 1990s, VLSI semiconductor technology had evolved to the point where microprocessor performance began to eclipse the performance of discrete logic designs. These traditional designs were limited by speed-of-light delay issues inherent in any CPU larger than a single chip, and performance alone began driving the success of microprocessor-based systems.
By the mid 1990s, every computer made were based on microprocessors, and the majority of general purpose microprocessors were implementations of the x86 ISA. Although there was a time when every traditional computer manufacturer had its own proprietary micro-based designs there are only a few manufacturers of non-commodity computer systems today
== Commodity Computing in the Present Day ==
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