What is the difference between a 32-bit win7 system and a 64-bit win7 system?

The Win7 system, from another perspective, contains two major versions, one is 32-bit and the other is 64-bit. 64-bit systems must be stronger than 32-bit? Do you need a 64-bit Windows 7? 32-bit system and 64-bit system What is the difference?

You may feel very confused, this An article may help you.

First of all, I believe that a large percentage of netizens who choose 64-bit Windows 7 have a memory greater than or equal to 4GB. In 32-bit Windows 7, it may show that the memory can use 3.25G, which makes many users feel uneasy. That's right, the addressable memory space is really the most significant feature of 32-bit Windows 7 and 64-bit Windows 7 downloads.

A 32-bit CPU (accurately a CPU running in 32-bit mode) can only address up to 4GB of memory. Subject to this, the 32-bit operating system only Can recognize up to 4GB of memory, because in the system, in addition to memory, there are many storage devices, so the real available memory space is certainly less than 4GB, which is the 3.xxG displayed in the system properties we see.

But the 64-bit CPU has changed a lot. The maximum addressing space of the 64-bit CPU is 2 to the 64th power of the 64th byte. After calculation, the addressable space is amazing. 16TB (treabytes), which is 16384GB. Of course, this is only a theory. From the practical application, the versions of Windows 7 64bit are 8GB-192GB respectively. Among them, the Home Edition can support 8GB of memory, the Home Premium can support 16GB of memory, and the 64-bit Windows 7 Professional. The Enterprise and Ultimate versions support up to 192GB of memory.

That is to say, users with memory greater than or equal to 4GB are limited by 32-bit hardware, so they cannot maximize the use of hardware resources. This is necessary to install a 64-bit operating system. To maximize the use of resources.

Note that 64-bit systems require 64-bit CPU support. Before installing 64-bit Windows 7, please make sure your CPU supports 64-bit. In general, 2006 CPUs purchased after the year support 64-bit mode.

If you only consider this, for users with less than 4GB of memory, 32-bit Windows 7 is more suitable for everyone, because the 64-bit version will take up more system memory resources. It is counterproductive.

Next, let's consider the computing performance, which is also very concerned by many netizens.

In theory, the performance on 64-bit platforms far exceeds that of 32-bit platforms. The reason is in the data bit width with the CPU general-purpose register, the 64-bit platform is 64-bit, and the 32-bit platform is 32-bit, that is, the 64-bit platform can run 64-bit data instructions, and 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.

I believe that there will be many users shaken when I see this, and even a lot of netizens with less than 4GB of memory want to experience the power of 64-bit Windows 7, but there is still a problem. .

This is the problem with the application software.

Running 32-bit applications on 64-bit Windows 7 doesn't make you feel a leap in performance, only 64-bit applications can maximize the benefits of a 64-bit platform. . But it's clear that the current 64-bit applications are far below the 32-bit platform in number, but the good news is that more and more software developers are starting to port their software to 64-bit platforms.

At least for now, there are still a lot of software that is not compatible with Windows 7 64-bit versions, all of which takes time to resolve.

From the above we can see that the choice of 32-bit system or 64-bit system is not determined by one factor, we need to consider many factors, and then combine their own applications. And the actual situation of the hardware, make a choice.

I hope that the introduction of this short article will help you to choose the platform version downloaded by windows7 system.