Win7 32 64 What is the difference between the detailed answer (a)

        Experts point out that for most users who want to upgrade Windows 7, the 64-bit version of Windows 7 is the most appropriate.

However, if you don't have enough memory (at least 4GB), your device doesn't support 64-bit drivers, and you're performing a 32-bit system upgrade, then you'd better choose the 32-bit version of Windows 7.

In addition, the author should remind everyone that although some versions of 64-bit Windows 7 can provide "Windows XP mode" to solve backward compatibility problems, "XP mode" is not a panacea. Let's take a look at it:

1. Which computers support 64-bit Windows 7?

Generally speaking, except for low-end CPUs that don't support AMD or Intel extensions, most of the computers that have been produced in the past three years are capable of running 64-bit Windows 7. For example, Intel Atom low-power CPUs and earlier Intel Intel Core CPUs (such as Core Duo instead of Core 2 Duo) do not support 64-bit Windows 7. If you are not sure which CPU is configured on your computer and if the CPU supports 64-bit, then you can use the free Intel processor identification tool to identify.

2. How to identify whether an external device is compatible with 64-bit Windows 7?

Most Vista-compatible peripherals work with 64-bit Windows 7. However, the introduction of 64-bit is a real blow to traditional hardware support. The best solution is to use a web search to view 64-bit device drivers to support 64-bit peripherals.

3. Can users use 32-bit device drivers in a 64-bit version of Windows 7?

No, the device driver code can only run in the same address space as the Windows kernel. Therefore, the device driver must match the architecture of the kernel itself. Some manufacturers bundle 32-bit and 64-bit drivers in a separate installation package, which leads some users to think that 32-bit drivers can run on 64-bit Windows operating systems, but it is not.

However, although the 32-bit driver does not support 64-bit Windows 7, 64-bit Windows 7 users can install 32-bit drivers in "Windows XP Mode" and virtualize on Windows XP. A 32-bit USB printer and other peripherals are used in the machine.

4. Can "Windows XP Mode" run on 64-bit Windows 7?

Yes, 64-bit Windows 7 fully supports Windows XP mode. In fact, using Virtual Machine Monitor (VMM), similar to Windows virtual machine products to support "Windows XP Mode" is at 64 The only way to use a 32-bit device driver under the Windows operating system. However, users should be aware that peripherals must be connected to the computer via a USB interface. Traditional hardware using proprietary expansion cards or dongle may not work with Windows XP Mode.

5. What is the Windows XP mode? How to get "XP mode"?

The answer is simple. "Windows XP Mode" is actually a virtual machine containing "Windows XP SP3" running under the Windows 7 system environment. Windows 7 Professional, Ultimate and Enterprise users can be downloaded for free through the Microsoft Download Center.

More precisely, Windows XP mode is a 64-bit application that can create a stand-alone, local 64-bit process emulating a 32-bit PC environment (actually, a series of 64-bit services and device drivers) ).

6. Can users run 32-bit Windows applications in a 64-bit Windows 7 environment?

Yes, almost all 32-bit Windows applications can run seamlessly on 64-bit Windows.

7. When installing a 32-bit application on 64-bit Windows 7, why can't I see its registry key?

64-bit Vista and Windows 7 have 64-bit to 32-bit conversion layers, 64-bit Windows can independently register 32-bit applications and import them into the appropriate

registry configuration In the unit.

8, using 64-bit Windows 7 will get the performance advantage?

It depends on the specific situation. If you are using a large volume of files and applications and need to consume a lot of memory, then using 64-bit Windows 7 will have obvious advantages. This is because 64-bit Windows 7 can support physical RAM far beyond 32-bit Windows 7, and also supports application extension mode.

9. Why does 64-bit Windows use more RAM than 32-bit Windows?

Any 64-bit operating system consumes far more memory than 32-bit Windows, depending on the 64-bit code. It's not surprising that 64-bit operating systems use larger internal structures and will take up more space (whether memory or hard drives).

10. Is it safer to use 64-bit Windows 7 than 32-bit Windows 7?

Yes, many of the core security features require 64-bit support, such as data execution protection and patch protection. In addition, 64-bit Vista or Windows 7 will also provide users with device driver numbers. Signature protection.

11. Can users perform 32-bit Windows to 64-bit Windows upgrades?

No, at present, the Microsoft Windows upgrade process does not support migration between processor architectures. If you want to upgrade from 32-bit Windows to 64-bit Windows, you must perform a "net install" of 64-bit Windows.