How to Check the Mac Processor Speed
Want to know how fast a Mac is? You can check a Macs processor clock speed, chip type, and CPU architecture a few different ways, but we’ll cover two quick methods to determine the clock speed of a given Mac. First, a super easy glance at processor speed through the GUI, and second, a more advanced way to find processor details through the command line.
Check a Mac CPU the Easy Way from the Apple menu
Finding the CPU details of a Mac this way is the same in all versions of OS X:
- Go up to the Apple menu and select “About This Mac”
- The About This Mac overview screen will reveal processor details as well as much more about the given Macintosh
This window shows what version of Mac OS X you are running, what your processor and processor speed is, and how much memory your Mac has, amongst other details.
Older versions of OS X has the same window, but it looks slightly different:
If you want, you can then go through and check CPU usage through the Mac Task Manager, known as the Activity Monitor.
Check a Macs CPU via the Command Line
The GUI is easy, but what fun is that? What if you want to check a machines processor remotely through ssh? Maybe you’re stuck in Single User Mode and want to check CPU data from the command line? Let’s use the Terminal instead.
Using the following command you can check what the CPU is:
The string returned includes both the brand and the clock speed of your Macs processor. For example, you might see:
machdep.cpu.brand_string: Genuine Intel(R) CPU T2500 @ 5.00GHz
Keeping with the theme here, you may then want to monitor what your Mac CPU is doing. If you want a command line activity monitor, use this variation of the ‘top’ command to monitor CPU usage. I like it better than the standard top command because it uses less CPU itself, and it sorts processes by their CPU usage. Give it a go.
This is very useless if you are buying a previously owned mac. The value that is displayed here in “About this mac” can be edited… The real way to verify is with a cpu benchmark tool.. ram is probably easier to verify, just by opening activity monitor and a bunch of youtube tabs until you can see swap is being used (swap is hard drive space being used as backup ram)
Hi Guys I Like iMacs
How do I get the crappy version of About This Mac like what’s in the first screenshot?
Upgrade or downgrade OS X to the version with the look you like, not recommended
[…] but these two are detailed and give you the information you need. For the record, there is a much easier way to get this information, just go to “About This Mac” under the Apple menu. […]
The terminal command doesn’t work for PPC macs.
You can also get this information from the System Profiler but I think for a noob digging around in there isn’t the simplest approach.
I hadn’t seen that command before, nice tip there.