Random Access Memory (RAM) It is a vital component of any computer. When you run an application on your Mac, it requires that a portion of your available memory be run. Serious problems may arise if there are problems with your computer's memory.
Today we will see how to know how much memory you have, what you use it and how you can perform extensive tests to make sure it works correctly.If you recently installed a new RAM bar and have problems, testing is a vital part of problem solving.
Find out how much memory you have
To know how much memory your Mac has, click on the logo ofManzanain the upper left corner of your screen and selectAbout this MacIn lapestaaGeneral descriptionlineMemoryIt lists the amount of RAM in GB, the speed of RAM in MHz and the double data rate (DDR) generation you are currently using.
This is important if you intend to add more RAM to your machine., since you want to match your existing RAM with the one you install. This is mainly a tip for the owners of previous iMacs and MacBooks, since the RAM in Apple's newest laptops is soldered to the logic board.
Click onSystem Reportand navigate to the sectionMemoryTo get even more information, here you can see how many RAM bars you have installed, which is another important information that you should keep in mind if you want to update. to isolate the problems).
Find out what you are using your memory
Start the Activity Monitor, then click on the tabMemory.Order the columnMemoryin descending order (an arrow pointing down) will be displayed to see the processes that are using the most memory at the top.Yes go"Kernel_task" using a lot of memory, that is the operating system running in the background.
You can end any process by selecting it and then clicking on the Xat the top of the window.Please note that this closes the corresponding application or the browser tab.To avoid data loss, exit the application as you normally would, or by selecting it and using the tabCmd + Q.
At the bottom of this screen, see a summary of your total memory, the amount you are currently using and a graph that shows the "pressure" of the memory over time. Try opening some applications to see how they affect performance .
Learn the symptoms of defective memory
There are some telltale signs that suggest thatyour memory may not be working correctlyBe careful with any of these problems:
- Applications hang unexpectedly, more often than they usually do.
- Your operating system freezes or restarts without warning.
- Poor performance means that your computer becomes slower the longer you use it.
- Files and settings are easily corrupted.
- Problems occur even afterhave reinstalled macOS.
- Boot problems, including three beeps at startup.
The best way to check your Mac's memory for problems is to perform memory tests using the least amount of information possible.Since the operating system uses a lot of RAM in the background, it is recommended to test the memory by booting in a lightweight test environment.
Verify your memory with Apple Diagnostics
Testing your RAM with Apple's user diagnostic tools is easy. Simply restart your Mac, then press and holdDas soon as it restarts. If you did it correctly, your computer will boot into Apple Diagnostics or Apple Hardware Test, depending on the age of your machine.
Follow the instructions and let the test complete.It may take a while, especially on older computers.When finished, you should see a report that gives you a brief description of the problems detected. Unfortunately, the test will only tell you if problems were detected or notYou may not know which RAM stick is defective.
Problems running the test?Holding downOption + DAt the beginning, run this test from the Internet. Take more time to gather the necessary files, but it should work just as well once the download is complete.
Check your memory using MemTest86
If you want to get more information about the problems detected by Apple's diagnosis, or if you want to run another test for your peace of mind,MemTest86It is one of the best tools for the jobThere are some memory test tools that use similar names, but MemTest86 is still maintained and updated regularly.
Now download the free unit creation toolEtcher, mount the DMG and install it in your Applications folder. Go to theMemTest86 downloadsand select theimage to create a bootable USB driveinLinux / Mac Downloads.
Once MemTest86 has downloaded, extract the file and run Etcher. ClickSelect image, browse to the extracted file you previously downloaded and choose the filememtest-usb.img.Now click onSelect unitand choose the USB drive you want to use. When ready, clickFlash.and wait for the process to complete.
Then, turn off the Mac you wish to test and insert the USB drive you just created. Press and hold the keyOptionand turn on your Mac. When prompted, select the external drive you created (it may appear asEFI Boot) by clicking on the arrow to start MemTest. Do not selectMacintosh HD, since this is your internal unit.
Wait for MemTest86 to initialize. The test should start after a brief pause, but if it does not, selectConfig andthenStart Test.D time for the test to complete; it took about 40 minutes on our test machine. At the end you will be given a summary and an option to save a report on the USB drive in HTML format.
Free disk space on your Mac
Some people use "memory" as a general term for free space, but macOS specifically refers to this as "storage." You can find more information by clicking on the logo ofManzanaselectAbout this Macand then click onStorage.lengeta