So, your Mac’s slowing down—again? I get it. You’re trying to get stuff done, maybe watch a video, open a few tabs, or work on a project, and suddenly everything takes forever to load. Frustrating, right?
You’re not imagining it. Your Mac could be doing way more than it can handle. Maybe too many apps are open, or sneaky background tasks are using up power.
Or maybe your system hasn’t been updated in a while and it’s just… tired.
Why does this matter so much? Because when your Mac lags, it affects everything—your work, your fun, your time.
Plus, it’s good to know what’s eating up your computer’s power so you can fix it fast. You don’t want your memory and CPU working overtime for no reason.
But don’t worry. I’ve got you. In this guide, I’ll walk you through how to check your Mac’s CPU and memory usage, and what you can do to speed things up.
It’s easier than it sounds—and once you know how, you’ll feel like a tech pro. Let’s get started.
Why Your Mac Might Be Slowing Down
1. Running too many apps at once?
Let’s be honest—we all do it. You open a few tabs, then your email, maybe Photoshop, and before you know it, your Mac’s gasping for air.
When you run too many apps, your Mac uses more CPU and memory.
That’s like asking your brain to do five things at once—it gets overwhelmed.
So, if your Mac feels slow, check how many apps are open and close the ones you don’t need. It’s a quick win.
2. Background processes you didn’t even know about
Here’s the thing—not everything running on your Mac is visible. Some apps or services run quietly in the background.
Maybe it’s syncing files, checking for updates, or something else you didn’t ask for.
These background tasks use up resources without you realizing it. That’s why your Mac might feel slow even when it looks like nothing’s open.
We’ll talk in a bit about how to spot and manage them.
3. Outdated macOS can slow you down
If your system hasn’t been updated in a while, it might be causing the slowdown.
Apple releases updates not just for new features, but also to fix bugs and improve performance.
So if your Mac feels sluggish, check if an update is available. Updating could give your Mac a much-needed speed boost.
How to Check CPU and Memory Usage on Your Mac
Alright, now let’s get into the good stuff. Here’s how you can actually see what’s using your Mac’s power.
#1 Use Activity Monitor
This is your go-to tool. Think of it like your Mac’s control center.
- Open Activity Monitor.
- Click the “CPU” and “Memory” tabs at the top.
- Look at the list of apps and see which ones are using the most resources.
- If you find something using too much, just click it and hit the “X” button to close it.
Use this whenever your Mac feels slow. It gives you a clear picture of what’s going on behind the scenes.
#2 Use Terminal for real-time stats
Feeling curious? Terminal gives you a deeper look.
- Open Terminal (you’ll find it in Applications > Utilities).
- Type top and press Enter.
- You’ll see a live list of processes using your CPU and memory.
It’s not as pretty as Activity Monitor, but it’s powerful. Use this if you want more detailed info.
#3 Use the System Report
Want a quick look at your system’s health?
- Click the Apple Menu in the top-left corner.
- Select System Settings.
- Then go to General > About.
- Then click System Report.
- You’ll get a full overview of your Mac’s hardware and software.
It’s not real-time like the other tools, but it’s great for checking specs and system info.
How to Speed Up Your Mac After Checking Usage
Now that you’ve seen what’s using your Mac’s power, let’s fix the issues.
Here’s what you can do to make things run smoother.
#1 Close apps you’re not using
This one’s simple, but super effective.
Sometimes we forget what’s open. And each open app uses memory, even if it’s just sitting there.
- Look at your dock. Right-click on apps you’re not using.
- Click Quit to close them.
You’ll probably feel the difference right away.
#2 Restart your Mac regularly
I know, it sounds basic. But trust me—it works.
Restarting clears out temporary files and resets processes, giving your Mac a fresh start.
- Click the Apple Menu and choose Restart.
- Let it shut down fully, then turn it back on.
Do this at least once a week. It’s like a reset button for your Mac.
#3 Update your macOS
Don’t skip updates—they often contain performance improvements.
- Go to System Settings.
- Then go to General > Software Update.
- If there’s an update available, click Upgrade Now.
This can fix bugs and make your Mac run smoother.
#4 Manage your login items
Too many apps launching at startup? That can slow things down right from the beginning.
- Open System Settings (or System Preferences on older macOS).
- Go to General > Login Items & Extensions.
- Remove anything you don’t need by clicking the “–” button.
This makes your Mac start faster and keeps it from getting bogged down early on.
#5 Clean up your desktop
Every icon on your desktop is like a little window your Mac has to keep track of. Too many icons = more work for your system.
- Create folders to group files together.
- Move old files to another location, like your Documents folder or an external drive.
A cleaner desktop makes your Mac feel snappier.
#6 Free up hard drive space
If your hard drive is almost full, your Mac can slow down a lot.
- Try to keep at least 15–20% of your drive free.
- Delete files you don’t need.
- Move large files to an external drive or cloud storage.
Your Mac needs space to breathe, especially when doing heavy tasks.
#7 Keep your apps updated
Outdated apps can slow things down or cause bugs.
- Open the App Store.
- Click Updates and install any available updates.
Do this every week or so to keep things running smoothly.
#8 Use lighter apps when possible
Some apps just use more power. If you can, switch to lighter ones.
- Use Safari instead of Chrome—it uses less memory.
- Try simple apps for writing or editing instead of full-featured suites.
Small changes like this can make a big difference.
Extra Tips to Keep Your Mac Happy
#1 Manage startup items
The fewer apps that launch when you boot up, the faster your Mac starts.
- Go to System Settings.
- Then go to General > Login Items.
- Remove anything unnecessary.
#2 Reduce desktop clutter
Too many icons can slow things down.
- Move files into folders.
- Keep only what you need on your desktop.
#3 Keep your hard drive light
Don’t let your drive fill up.
- Keep at least 15–20% of your storage free.
- Use cloud storage or an external drive for big files.
#4 Update your apps too
Not just your system—apps need updates too.
- Open the App Store and check the Updates tab.
#5 Choose lighter apps
Some apps are just too heavy. Go for simpler alternatives.
- Use Safari for browsing.
- Try lighter writing or editing tools when possible.
The Takeaway
So, here’s the deal—your Mac doesn’t have to stay slow. You’ve learned how to check what’s going on with your CPU and memory.
You’ve seen how background apps, old systems, and too many open programs can drag things down.
But now? You know what to do. From using Activity Monitor to cleaning up your desktop to keeping your system and apps updated, you’ve got the tools to make your Mac faster and smoother.
A lot of people think they need a new Mac when it starts slowing down. But honestly, just a few simple changes can make a huge difference. Try these tips out, and your Mac will feel fresh again.
Go ahead—give it a shot and see how it runs. Got questions or your own tips? Drop them in the comments. Let’s help each other out!
