How you know if you need a RAM upgrade – For Mac Users

ere’s a 3-step process of how I determine if a Mac user needs additional memory. Using this method you can determine if you need more memory for your Mac too.

Step 1) Use your Mac – Go about the activities you typically perform on your Mac. If you use your Mac for a lot of Photoshop work, open several documents into Photoshop and tweak them as you normally would. If you are an avid web consumer, open up your favorite web browser(s) and load up as many websites into different tabs and windows that would represent your typical Macs usage. Just use your Mac as usual, and leave those programs running.

Step 2) Launch Activity Monitor and observe memory usage – now that you’ve been using your Mac, leave all the documents and applications open, you’ll want to look at what is basically your Mac Task Manager, known as Activity Monitor. Here’s how:
- LaunchActivity Monitor” located in /Applications/Utilities/
- Click on the “System Memory” tab near the bottom
Let’s investigate what Activity Monitor is telling us.
The Memory Pie Chart – First you’ll want to look at the pie chart. To make it simple, a lot of red and yellow indicates high amounts of RAM utilization, where as a lot of green and blue indicates plenty of free and inactive RAM is available for the operating system to use.
In the screenshot below you can see there is practically no green in the pie chart, and the red & yellow are taking up over 3/4 of the pie, this is a pretty good indicator of needing more physical RAM.

Page Ins vs Page Outs – In addition to checking out the memory pie chart, look at your Page ins vs Page outs. If you have a high number of Page outs to Page ins, you probably need more RAM. I always just do a quick calculation, if Page outs are 10% or more of Page ins with regular computer use, I recommend a memory upgrade. In the screenshot above, Page outs represent 17% of Page ins. This user would benefit from more available system memory.
You may recall that paging is the Mac virtual memory system, which essentially uses your hard drive as virtual RAM when the real thing runs out. Virtual memory is a great feature, but it’s significantly slower than physical RAM, and a lot of page use will cause system slow downs.
Step 3) Buy a RAM upgrade if you need it – If you have determined that adding additional RAM to your Mac would benefit you, then it’s a good idea to buy more. Memory is relatively cheap these days, and increasing your memory can often provide significant performance gains, for this reason I tend to think the more memory you have the better.
There are plenty of good places to get memory, if you don’t want to deal with installing it yourself, just take your Mac down to your local Apple Store and have them handle it all for you. You’ll pay quite a bit more this way, but many novice tech users prefer this method.
If you’re a bit more tech savvy and a do-it-yourself kind of person, buy your own RAM from an online retailer and install it yourself. You’ll save a lot of money, and it usually only takes a couple screws and 15-20 minutes from start to completion. A good place to comparison shop on prices and buy RAM from is Amazon, they host a myriad of suppliers, offer free shipping, and have neutral user reviews to determine vendor quality.
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