What is the difference between Windows 7 32-bit and 64-bit systems?

Many of my friends may not know what is the difference between a 32-bit Windows 7 system and a 64-bit system. I will introduce it to you in detail.

The 64-bit Windows 7 system is selected because the memory size is larger than or equal to 4 GB. In 32-bit Windows 7, the memory usage may be 3.xxg. The addressable memory space is the most significant characteristic of 32-bit Windows 7 and 64-bit Windows 7. 32-bit CPU (or 32-bit CPU) can only address a maximum of 4 GB memory. Therefore, a 32-bit operating system can only recognize a maximum of 4 GB memory, in addition to memory, there are many storage devices in the system. Therefore, the actually available memory space must be less than 4 GB, that is, the 3.xxgshown in the system properties. However, the 64-bit CPU has changed a lot. The maximum addressing space of the 64-bit CPU is the 64-to-the-power bytes of 2. After calculation, the addressable space reaches an astonishing 16 TB (treabytes ), that is, 16384 GB. Of course, this is just a theory. In practical application, the 64-bit Windows 7 versions are 8 GB-192 GB, of which, the Family Basic version supports 8 GB memory, the Home advanced edition supports 16 GB of memory, while the 64-bit Windows 7 Professional Edition, Enterprise Edition, and flagship edition support up to GB of memory. That is to say, customers with memory greater than or equal to 4 GB cannot maximize the use of hardware resources due to 32-bit hardware restrictions. Therefore, it is necessary to install a 64-bit operating system to maximize the use of resources. Note that the 64-bit system requires 64-bit CPU support. Before installing 64-bit Windows 7, check whether your CPU supports 64-bit. Generally, the CPU of the purchased notebook supports 64-Bit mode. If you only consider this, for users with memory less than 4 GB, 32-bit Windows 7 is more suitable for everyone, because the 64-bit version will occupy more system memory resources.

In terms of computing performance: theoretically, the operation performance on a 64-bit platform far exceeds that of a 32-bit platform. The reason lies in the Data Bit Width of the general-purpose CPU register. The 64-bit platform is 64-bit, while the 32-bit platform is 32-bit. That is to say, the 64-bit platform can run 64-Bit Data commands, the processor can extract 64-bit data at a time (only two instructions are required to extract 8 bytes of data at a time), which is 32-bit (four instructions are required to extract 4 bytes of data at a time) the performance is doubled in theory. However, running 32-bit applications in 64-bit Windows 7 won't make you feel a leap in performance. Only 64-bit applications can maximize the advantage of the 64-bit platform. However, the number of 64-bit applications is much lower than that of 32-bit platforms, but more and more software developers are migrating their software to the 64-bit platform. We can see from the above that selecting a 32-bit or 64-bit system is not determined by one factor. We need to consider many factors, then, make a choice based on the actual situation of your applications and hardware.