What is the difference between Win7 64-bit and 32-bit

First, the original 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.

Second, the configuration is different. The 64-bit operating system can only be installed on a 64-bit computer (the 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 the "Big Marathon": 64-bit performance will be greatly reduced.

Third, the speed of operation is different. 64-bit CPU GPRs (General-Purpose Registers, 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, one extraction 8 bytes of data), doubling the 32-bit (requires four instructions, extracting 4 bytes of data at a time), theoretically the performance will be doubled.

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.

Fifth, 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 "input-output ratio" to invest limited funds into software that uses more groups. This is also an important reason why 64-bit software is relatively expensive (to spread costs into fewer offerings).

It is especially emphasized here that although a 64-bit computer can be installed with a 32-bit operating system, a 32-bit computer must not be installed with a 64-bit operating system. This is important to keep in mind to avoid blind downloads and installations.

If you don't know if your computer's CPU is 64-bit, you can use some software to query. If you can use CPU-Z to complete the test, the latest version is 1.60.2.