Win7 system is divided into 32-bit and 64-bit versions, many people are very entangled when choosing 32-bit and 64-bit systems, the reason is which version should be installed on their computer, so what is the difference between win7 32-bit and 64-bit?
What is the difference between 32-bit and 64-bit in win7 system?
Win64-bit is much faster than 32-bit, and the performance on the 64-bit platform is much better than that of the 32-bit platform, because the data bit width of the CPU general register is different, the 64-bit platform is 64-bit, and the 32-bit platform is 32-bit. A 64-bit platform can run 64-bit instructions, and the processor can extract 64-bit data at a time (8 bytes of data at a time), which is twice as high as 32-bit (4 bytes of data at a time) and theoretically 1x the performance.
First, the CPU requirements are different.
CPUs are available in 32-bit and 64-bit configurations, with a 32-bit CPU only being able to install a 32-bit system, while a 64-bit CPU can be installed with both a 32-bit and a 64-bit system.
Second, the speed of operation is different.
The instruction set of a 64-bit CPU can run 64-bit data instructions, which is twice as much as a 32-bit CPU (requires 64-bit software support).
Third, the addressing ability is different.
A 64-bit system can support up to 128 GB of memory and up to 16 TB of virtual memory, while a 32-bit CPU and operating system can only support up to 4 GB of memory (in fact, it is only about 3 GB). This means that if your RAM is greater than 4G, the extra memory capacity will be wasted for a 32-bit system.
Fourth, software compatibility is different.
In terms of practicality, the Win32-bit operating system can support up to 4G memory (actually almost 3.).2G RAM or so), while 64-bit systems can support more than 4G of RAM. If you have 8G RAM or above, then it is recommended to use a 64-bit operating system, otherwise it will not be supported. Win64-bit operating system, theoretically support a large amount of memory, more depends on how many slots your motherboard has, how much memory you have, 64-bit system can identify the largest memory.
If the computer configuration is sufficient, it is recommended to install a Win7 64-bit version, and for 4G or less than 4G memory old computers, it is recommended to install a 32-bit system.