What does mips mean in computers?

In computers, mips refers to the average execution speed of single-word fixed-point instructions, that is, the number of millions of machine language instructions processed per second. It is an indicator of the computing speed of a computer. MIPS is the rate of instruction execution, which stipulates that performance is inversely proportional to execution time. The faster the computer, the higher the MIPS value.

#Environment of this article: windows10, Dell G3.

MIPS is the abbreviation of Million Instructions Per Second - the number of million instructions executed by the computer per second. It is a measure of how fast a computer is running.

Nowadays, the frequency of CPUs is getting higher and higher, and they are pipelined, superscalar calculated, and dual-core and multi-core. It is no longer scientific to measure the speed of a computer simply by clock frequency. Use MIPS to measure relative comparison. Reasonable. MIPS is the rate of instruction execution, which stipulates that performance is inversely proportional to execution time. The faster the computer, the higher the MIPS value.

The recommended maximum operating frequency of S3C44B0X with ARM7 as the core is 66MHz. According to the technical information provided by ARM, the computing speed of Cortex A9 CPU can be calculated according to the following formula: MIPS=0.9×MHz, so it can be It is concluded that the maximum computing speed of the old model Arm 7 series S3C44B0X is approximately 0.9×66MHz=59.4MIPS. The 6M 51 microcontroller usually takes 12 or 24 clock cycles to complete an instruction, and multiplication and division instructions require 48 clock cycles. In this way, I initially estimate that the computing speed of the 6M 51 microcontroller should be between 0.2~0.5MIPS. It can be seen that there is still a huge difference in the computing speed of 8-bit machines and 32-bit machines.

Taking AVR as an example, its data throughput rate can reach 1MIPS/MHz, that is, the oscillation frequency of 1MHz can reach 1MIPS.

To sum up, it is reasonable to use MIPS to measure computer speed. Different CPUs have different maximum operating frequencies and different data throughput rates, so they cannot be generalized.

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