32-bit CPU can process 32-bit binary numbers at one time, and can only install 32-bit systems; while, 64-bit CPU can process 64-bit binary numbers at one time, and can install 32-bit systems and 64-bit systems. The processing speed (operation speed) of 64-bit CPU is faster than that of 32-bit CPU.
CPU related knowledge
In digital circuits and computer technology, binary is used, and the codes are only "0" and "1", whether it is "0" or "1", is a "bit" in the CPU. In computer technology, the number of binary digits that the CPU can process at one time per unit time (at the same time) is called the word length.
So a CPU that can process data with a word length of 8 bits is usually called an 8-bit CPU. In the same way, a 32-bit CPU can process binary data with a word length of 32 bits per unit time.
The 64-bit CPU is compared to the 32-bit CPU. The most obvious change of the 64-bit CPU is the addition of eight 64-bit general-purpose registers, the memory addressing capability being increased to 64-bit, and the registers and instruction pointers being upgraded to 64-bit.
The 8-bit CPU can only process one byte at a time, while the 32-bit CPU can process 4 bytes at a time. Similarly, the CPU with a word length of 64 bits can process 8 bytes at a time. In this way, AMD's 64-bit CPU is theoretically twice as fast as the 32-bit CPU.
In the history of computer development, mankind has experienced two leaps from 8-bit computing to 16-bit computing, and from 16-bit computing to 32-bit computing. 64-bit computing is a new generation compared to 32-bit computing. High-performance computing standards are like the difference between highways and mountain roads. Compared with 32-bit computing, 64-bit provides greater computing bandwidth, thus bringing higher performance, making many ideas that were simply impossible to achieve in the past become a reality. Reality.
64-bit computing has two main advantages:
● It can perform a wider range of integer operations;
● Can support larger memory.
The above is the entire content of this article, I hope it will be helpful to everyone's study. For more exciting content, you can pay attention to the relevant tutorial columns of the PHP Chinese website! ! !
The above is the detailed content of What is the difference between cpu32bit and 64bit?. For more information, please follow other related articles on the PHP Chinese website!