Cloud host chooses 32-bit or 64-bit

Advantages and Disadvantages of 32-Bit and 64-Bit Systems

64-bit systems can access a large memory address space of more than 4GB, which can only access 4GB of memory address compared to 32-bit systems.

The performance of 64-bit systems has improved because the CPU has 16 general purpose registers, compared to only 8 for 32-bit systems.

Performance is improved by using optimized x64-64 CPU instructions.

An online test shows that the same application 64-bit system consumes at least 60% more memory than a 32-bit system, which means more cost.

Loss of performance because 64-bit is 8 bytes, which is only 4 bytes compared to 32-bit systems.

Since x86_64 is compatible with x86, 32-bit Windows and Linux operating systems can run well on x86_64 CPUs. The x86 CPU can only run 32-bit operating systems, while the x86_64 CPU can run either a 64-bit operating system or a 32-bit operating system.

The Linux operating system is divided into two parts: the Linux kernel and the application. The x86_64 CPU can run 64-bit Linux kernels and 32-bit applications, while the 32-bit Linux kernel cannot run 64-bit programs.

To see if the Linux kernel is 32-bit or 64-bit, you can run the command: uname -a to view the application run command: file /usr/bin/*.

Experience shows that unless you have a special need for 64-bit, it is recommended to use a low-cost, fast 32-bit system.