The number of nanometers of a memory chip refers to the size of the storage unit in the memory chip, usually in nanometers. Common memory chip sizes are 4 nm, 2 nm, 1 nm, 0.4 nm, 0.13 nm, 0.11 nm and so on. Among them, 1 nanometer memory chip is the smallest size, 0.4 nanometer memory chip is the second smallest size, 0.13 nanometer memory chip is the third smallest size, and 3 nanometer is the most commonly used memory chip size.
The answer to this question may change over time, because the nanoscale of memory chips will continue to shrink as technology advances. Currently, the most common memory chip sizes are 16 nm and 14 nm. However, some companies have started to use smaller sizes, such as 10 nm and 7 nm.
At present, the mainstream memory chip is 14 nm or 28 nm process.