Term of the Moment
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Definition: chip feature size
The measurement of an integrated circuit (the chip). The driving force behind the design of integrated circuits is miniaturization, and the technology boils down to the never-ending goal of "make the transistor smaller." Transistors are a toggle switch with an input side (current source) that crosses a gate to the output side (drain). The shorter the distance from source to drain, the faster the transistor switches. Smaller means more computing power per square inch. See transistor toggle and digital perfection.
Feature Size Measured in Nanometers
The size of the elements that make up a transistor are measured in nanometers. For example, a 32 nm feature size refers to various elements of the transistor that are 32 nm in size. Also called a "technology node" and "process node," early chips were measured in micrometers (see table below).
New Chips Are Not Always Smaller
The smallest feature sizes are found on the latest, high-end CPU, SoC and AI chips that retail from several hundred to several thousand dollars apiece. However, 8-bit and 16-bit microcontrollers (MCUs) are used by the billions every year and sell for as little as a dollar and less in quantity. They use far fewer transistors and have feature sizes like the high-end chips a decade or two earlier. See microcontroller, CPU, SoC and AI chip.
Unbelievable How Small They Are!
Almost impossible to fathom, using state-of-the-art technology, on state-of-the-art chips, one square millimeter holds more than 100 million transistors. See transistor density.
A Note About Chip Branding
Chips are always improving due to new transistor designs and improved precision from one layer to the next. However, since the 2010s, in order to provide branding continuity, the marketing departments in chip companies decided to keep using ever-decreasing nanometer designations. However, in 2025, feature sizes were not really 2 nanometers; they were more like 14 to 21 nm. See CFET.
Half a Micrometer in Five Years
Feature Size Measured in Nanometers
The size of the elements that make up a transistor are measured in nanometers. For example, a 32 nm feature size refers to various elements of the transistor that are 32 nm in size. Also called a "technology node" and "process node," early chips were measured in micrometers (see table below).
New Chips Are Not Always Smaller
The smallest feature sizes are found on the latest, high-end CPU, SoC and AI chips that retail from several hundred to several thousand dollars apiece. However, 8-bit and 16-bit microcontrollers (MCUs) are used by the billions every year and sell for as little as a dollar and less in quantity. They use far fewer transistors and have feature sizes like the high-end chips a decade or two earlier. See microcontroller, CPU, SoC and AI chip.
Unbelievable How Small They Are!
Almost impossible to fathom, using state-of-the-art technology, on state-of-the-art chips, one square millimeter holds more than 100 million transistors. See transistor density.
CHIP FEATURE SIZES (Approximate)
Nanometers Micrometers
Year (nm) (µm)
1957 120,000 120.0
1963 30,000 30.0
1968 20,000 20.0
1971 10,000 10.0
1974 6,000 6.0
1976 3,000 3.0
1982 1,500 1.5
1985 1,300 1.3
1989 1,000 1.0
1993 600
1996 350
1998 250
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1999 180
2001 130 Still used for high-voltage
2003 90 applications and microcontrollers.
2005 65
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2008 45
2010 32
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2012 22 More branding than
2014 14 actual feature sizes
2017 10 (read next paragraph).
2018 7
2020 5
2022 3
2025 2
A Note About Chip Branding
Chips are always improving due to new transistor designs and improved precision from one layer to the next. However, since the 2010s, in order to provide branding continuity, the marketing departments in chip companies decided to keep using ever-decreasing nanometer designations. However, in 2025, feature sizes were not really 2 nanometers; they were more like 14 to 21 nm. See CFET.
In the 1990s, feature sizes of these AMD CPUs were reduced from 800 nanometers (0.8 µm) on the left to 350 nanometers (0.35 µm) on the right. That may not seem like much, but half a micrometer back then was huge. See transistor density. (Images courtesy of Advanced Micro Devices, Inc.)