The latest version of vista is sp2. The so-called sp refers to a patch package to fix the system vulnerabilities. There are no new functions in it, but from a security point of view, I suggest you install the latest sp2 patch package. VISTA is pre-installed in four versions in China retail and brand machines.

Windows Vista Home Basic (Home Basic)

Windows Vista Home Premium (Home Premium)

Windows Vista Business Edition (Business Edition)

Windows Vista ultimate edition (ultimate edition)

There is also one that can only be purchased through Microsoft's batch authorization certification.

Windows Vista Enterprise Edition (Enterprise Edition)

There are still some abroad.

Windows Vista Starter (Basic Edition) is only sold in some underdeveloped areas.

Sell N and K versions of Windows Vista with some functions stripped to special regions such as the European Union and South Korea.

Except for Windows Vista Starter, which only has a 32-bit operating system, all other system versions are divided into 32-bit and 64-bit versions. At present, because there are few softwares in the 64-bit system, and the hardware requirements are very high, each one needs a digital signature, and it will not be loaded until it is detected, so 99% of home users install a 32-bit operating system.