Check whether the MAC enables 64 bit operation and the methods and benefits of enabling 32 and 64 bits


Mac users must want to know whether their computer is running 64 bit or 32 bit. Today, Xiaobian will introduce to you whether to turn on 64 bit operation in MAC, and the methods and benefits of turning on 64 bit operation.

Check whether the MAC enables 64 bit operation:

Click the apple logo in the upper left corner of the MAC screen, select “about this computer”, click the “more information…” button in the pop-up square window, and you can see whether your Mac OS X system has enabled 64 bit computing in the “software” column.


How do you set up your Mac to run 64 bit or 32-bit Mac OS X

Open the terminal (if you can’t find it, click the magnifying glass in the upper right corner of the MAC screen to search for these two words). If you want the Mac to turn on 64 bit mode, enter the following command, enter, and then enter the password

  sudo nvram boot-args=“arch=x86_64”

If you want to run in 32-bit mode, enter this command

  sudo nvram boot-args=“arch=x86_32”

 be careful:Under Mac OS X system (Linux and UNIX are the same), the password entered in the terminal will not come out. Don’t think the keyboard is broken or the program is dead.

When you’re done, restart the Mac

The above method is once and for all. If you only use a 64 bit occasionally, just press and hold the 6 and 4 keys when starting up.

Benefits of enabling 64 bit on Mac OS X system:

Memory is no longer limited

64 bit operation means that the space limit for program operation is no longer 4GB ram To the 32nd power of 2 and to the 64th power of 2, do it yourself.

Grand central dispatch to improve CPU efficiency

Grand central dispatch, hereinafter referred to as GDC, allows the operating system to monitor the threads of GCD aware programs. In the past, Mac OS X allowed the program itself to manage multithreading, while GCD allowed the operating system to manage threads and dynamically allocate processor resources to threads, which greatly improved the CPU efficiency.

OpenCL, GPU acceleration function

GCD is the improvement of CPU processing multithreaded programs, while OpenCL is the acceleration of GPU. In short, OpenCL allows powerful GPUs to participate in some non graphical operations. Among the three benefits of 64 bit mode, OpenCL is the most hardware dependent.

The above is what Xiaobian wants to introduce to you today. Check whether the MAC turns on 64 bit operation, and the methods and benefits of turning on 64 bit operation. Interested users can try it on their own computer.