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1965Valves and transistors

Moore's law

Moore's law is Gordon Moore's 1965 observation that the number of transistors on a chip doubles regularly. It is not a law of physics but a prediction that set the pace of the whole industry for decades.

The original prediction

In an article for Electronics magazine, Moore estimated that the number of components on a chip would double every year. In 1975 he revised it to every two years. Chipmakers then treated it as a target they had to hit.

Numbers

ChipYearTransistors
Intel 400419712,300
Intel 803861985275,000
Pentium 4200042 million
Apple M1202016 billion
NVIDIA Blackwell B2002024208 billion (two dies)

Does it still hold?

The pace has slowed. Transistors are so small that we are hitting physical limits. Labels such as “3 nm” or “2 nm” are now more marketing names for generations. The industry looks for other paths: stacking chips, chiplets and specialised circuits for artificial intelligence.

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