Increasingly advanced semiconductor generations are called process nodes. Each process node represents a set of feature sizes; the smaller a chip’s features are, the more transistors it can contain, allowing it to execute more complex tasks. While the names of these nodes (e.g., 250 nanometers, nm) were historically based on approximate distances between parts of the chip, they are more arbitrary “branding” specifications today. In 2022, the most advanced mass-produced process node was the 5 nm node, with larger-scale 3 nm manufacturing expected soon. On the other hand, chips designed to more mature process nodes (e.g., 90 nm) are called legacy chips.