Teach you how to correctly distinguish between 32-bit and 64-bit operating systems

Sometimes when we download the software, the computer system will prompt, is it chosen to install 32-bit or 64-bit? Not a professional computer person will start Confused, what is 32? What is a 64-bit operating system? What is the difference between them? Today we will learn specifically.

How do you distinguish between 32-bit and 64-bit operating systems? Simply put, x86 stands for 32-bit operating system and x64 stands for 64-bit operating system. If your computer's CPU is more than dual-core, it certainly supports 64-bit operating systems. If your computer's memory is larger than 4G, then you need to use a 64-bit system, because no matter whether it is 32-bit Windows 7 or Vista, the maximum can only support 3.25G of memory. The 64-bit Windows 7 will support up to 128G of memory.

The specific differences are as follows:

First, the original intention of the design is different.

The 64-bit operating system was originally designed to meet the needs of customers who require large amounts of memory and floating point performance in areas such as mechanical design and analysis, 3D animation, video editing and authoring, and scientific computing and high performance computing applications. demand. In short, the words are: they are the operating platform for high-tech personnel to use the special software of this industry. The 2144 mini-game and the 32-bit operating system are designed for the average user.

Second, the configuration is different.

64-bit operating systems can only be installed on 64-bit computers (CPU must be 64-bit). At the same time, 64-bit commonly used software needs to be installed to achieve the best performance of 64-bit (x64). The 32-bit operating system can be installed on a 32-bit (32-bit CPU) or 64-bit (64-bit CPU) computer. Of course, the 32-bit operating system is installed on a 64-bit computer, and its hardware is just like "big horse car" ": 64-bit performance will be greatly reduced. Computer Basics Questions and Answers

Third, the speed of operation is different.

64-bit CPU GPRs (General-Purpose Registers) have a data width of 64 bits. The 64-bit instruction set can run 64-bit data instructions, which means that the processor can extract 64-bit data at a time (as long as Two instructions, extracting 8 bytes of data at a time, doubled the 32-bit (requires four instructions, extracting 4 bytes of data at a time), and theoretically doubles performance. Computer

Fourth, the addressing capabilities are different.

The advantages of 64-bit processors are also reflected in the system's control of memory. Since the address uses a special integer, an ALU (Arithmetic Logic Operator) and registers can handle larger integers, which are larger addresses. For example, Windows Vista x64 Edition supports up to 128 GB of memory and up to 16 TB of virtual memory, while 32-bit CPUs and operating systems can only support up to 4 GB of memory. Computer company system download

Fifth, the software is different.

Currently, 64-bit commonly used software is much less than 32-bit commonly used software. The reason is simple: there are relatively few users using a 64-bit operating system. Therefore, software developers must consider the “input-to-output ratio” to invest limited funds into the software of more users. This is also an important reason why 64-bit software is relatively expensive.

From the concept of 32-bit and 64-bit, to the specific difference between the two, in the past year, a lot of 64-bit applications have been created, but we can not generalize that 64-bit will be better than 32 Bit versions are faster and better, and obviously, better CPU performance is not the reason to upgrade to 64-bit. But there is no doubt that the future is still 64-bit, and more and more software vendors will offer 64-bit versions of the program over time.