Commonly used units to measure the speed of computer operations are Hertz, millions of instructions per second, millions of instructions per second, floating-point operations per second, bytes per second, kilobytes per second, megabytes per second and gigabytes per second.

1, Hertz (Hz): This is the most basic unit to measure the operation speed of a computer, indicating the number of instructions that can be executed per second. 1 Hz is equal to 1 100 million cycles per second.

2. Millions of instructions per second (MIPS): MIPS is a measure of the number of machine instructions executed by a computer at a speed of one million instructions per second. This is a traditional measurement method, which is mainly used to measure the performance of CPU.

10 million instructions per second (speed): This is another indicator to measure the execution speed of instructions, indicating the number of 10 million machine instructions that can be executed per second.

4. Flops per second: FLOPS:FLOPS a unit of measurement that is more suitable for scientific computing and data centers that need a lot of floating-point operations, indicating the number of floating-point operations that can be performed per second.

5. Bytes per second (B/s), kilobytes per second (KB/s) and megabytes per second (MB/s): These units are used to measure data transmission speed, not calculation speed. Used to measure the network speed or the transmission speed of the storage device.

6. Gigabit per second (GB/s): This is a rare unit used to express high-speed data transmission, such as the data transmission speed in some high-performance computing environments and data centers.