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128-bit architecture

Architecture word sizes

1-bit
2-bit
4-bit
8-bit
12-bit
15-bit
16-bit
18-bit
20-bit
24-bit
32-bit
36-bit
64-bit
128-bit

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The 128-bit architecture is a microprocessor or computer architecture that has a datapath width or a highest operand width of 128 bits or 16 octets. These architectures typically have a matching register file with registers width of 64 bits.

There are currently no mainstream microprocessors or systems that operate on general purpose 128-bit integers registers and data addresses, however there are a number of microarchitectures that introduced various extensions to handle 128-bit arithmetic in a more specialized way.