TL;DR: There isn’t a built-in GPU health score on Windows or macOS, but you can check your GPU’s condition by monitoring its usage in Task Manager or Activity Monitor and watching for warning signs like visual glitches, crashes, or unusually high GPU usage during basic tasks.
In this article:
- What is a GPU and why should you care?
- How to check your GPU health on Windows
- How to check your GPU health on Mac
- What do GPU usage numbers mean?
- How to keep your GPU running smoothly
- Signs your GPU may need attention
- Quick GPU health checklist
- Wrapping up
- FAQs
Just as a note, there isn’t a built-in “GPU health” score on Windows or macOS. Instead, checking your GPU usage, watching for unusual behavior, and paying attention to warning signs are the best ways to tell whether your graphics card is working properly.
Maybe videos don’t play as smoothly as they used to. Games start stuttering, the screen flickers every now and then, or your computer just feels slower than normal. Most people immediately blame the CPU when that happens. In reality, your graphics card can be just as responsible for those kinds of problems.
A quick GPU check can often help you spot small issues before they turn into bigger (and more expensive) problems. In this guide, we’ll explain what a GPU does, how to check it on Windows and Mac, and how to make sense of those GPU usage numbers.
What is a GPU and why should you care?
A GPU, short for Graphics Processing Unit, is the part of your computer that handles most of what you see on the screen.
Your CPU manages general computing tasks, while the GPU is built for graphics. It’s responsible for rendering videos, games, animations, creative software, and many of the visual effects you interact with every day.
Even if you’ve never opened a game or edited a video, your GPU is still working behind the scenes. Streaming movies, joining video calls, scrolling through websites, and even moving windows around your desktop all rely on it.
When everything is working properly, your GPU helps your computer:
- Play high-definition videos without stuttering.
- Run apps like Photoshop, Premiere Pro, Blender, and other creative software more smoothly.
- Minimize screen flickering and other display issues.
- Handle multiple monitors and high-resolution displays more efficiently.
How to check your GPU health on Windows
Press Ctrl + Shift + Esc to open Task Manager, then select the Performance tab and click GPU. You’ll see your GPU usage displayed as a percentage, making it easy to see how hard your graphics card is working.
If you’re doing everyday things like visiting websites, answering emails, or working in Google Docs, GPU usage will usually stay fairly low. Don’t be surprised if it jumps much higher while gaming, editing videos, or using other graphics-heavy programs. That’s completely expected.
How to check your GPU health on Mac
Open Activity Monitor by pressing Command + Space, typing Activity Monitor, and opening the app.
Depending on your Mac model and macOS version, Activity Monitor may show a % GPU or GPU Time column for each app. Use it to see which apps are using the most graphics resources.
For everyday tasks, most apps should use very little GPU power. If one application constantly stands out from the rest and your Mac feels unusually slow or the fans won’t stop spinning, it’s probably worth looking into.
What do GPU usage numbers mean?
One thing that often confuses people is that Windows and macOS don’t measure GPU activity the same way.
On Windows
Windows shows your graphics card’s overall usage as a percentage between 0% and 100%, giving you a quick picture of how hard it’s working.
On Mac
Activity Monitor shows GPU usage on an app-by-app basis rather than as one overall percentage for the entire system. Instead of focusing on the exact numbers, look for apps that consistently use much more GPU than expected, especially if your Mac is running hot or the fans stay on for long periods.
As a general rule, here’s what those usage levels usually tell you.
🟢 0% to 15%: Everyday use
Checking email, browsing the web, listening to music, or writing documents usually keeps GPU usage in this range.
That’s exactly what you want to see. During light tasks, your graphics card doesn’t have much work to do.
🟡 15% to 40%: Light to moderate workloads
Watching high-definition videos, using design apps, or visiting websites with lots of animations can easily push GPU usage into this range.
Your graphics card is doing more work, but these numbers are still considered normal.
🟠 40% to 80%: Heavy graphics work
Gaming, editing videos, exporting large projects, or working with 3D software can all drive GPU usage much higher.
You might also notice your computer getting warmer or hear the fans spinning faster. That’s simply your system keeping the graphics card cool while it’s under a heavier workload.
If you see this kind of usage while you’re only browsing online, or working in simple apps, though, something running in the background could be using your GPU without you realizing it.
🔴 80% to 100%: High GPU usage
Seeing your GPU hit 100% doesn’t automatically mean something is wrong. In fact, that’s exactly what you’d expect during demanding games or professional editing work.
The time to be concerned is when your GPU stays close to full usage while you’re doing basic tasks, or your computer starts freezing, lagging, or becoming unresponsive for no obvious reason.
If that happens, start with the simple fixes. Close any apps you aren’t using and restart your computer. Sometimes that’s all it takes to clear a background process that’s putting unnecessary strain on your GPU.
How to keep your GPU running smoothly
🚀 Keep your graphics drivers up to date
If you have a Windows PC, keeping your graphics drivers updated is one of the easiest ways to prevent display problems and keep everything running smoothly.
New driver releases often include bug fixes, better support for newer software, and performance improvements for games, creative apps, and other graphics-intensive programs.
If you’ve recently noticed screen flickering, visual glitches, or apps that suddenly feel slower than usual, checking for a driver update is a good first step.
💻 Lower the resolution if your computer is struggling
Older computers can have a hard time keeping up with 4K videos or graphics-heavy software. If that’s the case, lowering your display resolution to 1080p can take some of the pressure off your GPU.
On most laptops and mid-sized monitors, the difference in picture quality is barely noticeable, but the lighter workload can make your system feel much more responsive.
⚡ Check your hardware acceleration settings
Many apps, including Google Chrome, Slack, Microsoft Edge, Discord, and video conferencing software, use hardware acceleration automatically.
Most of the time, that’s a good thing because it lets your GPU handle certain visual tasks more efficiently. But if you’ve started seeing screen flickering, display glitches, or unusually high GPU usage, try turning hardware acceleration off in the affected app. It’s a quick change that sometimes fixes the problem.
🤓 If your computer is also running unusually hot, it may help to check your CPU temperature as well.
Signs your GPU may need attention
It’s completely normal to see your GPU usage spike from time to time, especially while gaming or editing videos. What you don’t want is for those issues to become an everyday occurrence.
If you’ve been noticing any of the symptoms below more often, your graphics card or the graphics driver could be trying to tell you something.
🤖 Visual glitches or strange shapes on the screen
Random colored lines, flashing pixels, black squares, or other unusual images appearing on your screen can all point to a GPU problem.
These visual errors are commonly known as artifacts, and they shouldn’t appear during normal use. Overheating, driver problems, or failing hardware are some of the most common causes.
🥶 The screen freezes, goes black and then comes back
Does your screen suddenly freeze, turn black for a few seconds, and then recover with a message like “Display driver stopped responding and has recovered”? That’s usually a sign that the graphics driver has crashed. It can happen because of outdated drivers, overheating, or software conflicts.
⚠️ GPU usage stays near 100% when you’re hardly using your computer
If you aren’t gaming, editing videos, or running other graphics-heavy software, your GPU shouldn’t stay close to full usage for long.
When it does, something else is usually going on. A background process, an outdated driver, conflicting software, or even malware could be putting unnecessary strain on your graphics card.
Quick GPU health checklist
If you’re wondering whether your graphics card is healthy, ask yourself these quick questions:
- GPU usage matches what you’re doing (low during everyday tasks, higher during games or video editing)
- You aren’t seeing screen flickering, colored lines, or strange visual glitches
- Your display isn’t freezing or recovering with driver error messages
- Your computer isn’t constantly running hot or spinning the fans at full speed
- Games, videos, and everyday apps are running smoothly.
If you answered “yes” to all of these, your GPU is probably working normally. If not, it’s worth taking a closer look before the problem gets worse.
Wrapping up
Your GPU does a lot more than run games. It’s constantly working in the background to play videos, render graphics, handle animations, and keep everything on your screen looking smooth.
Because of that, checking your GPU activity every now and then can help you spot small issues before they become much bigger (and potentially expensive) repairs.
If you’ve been dealing with constant lag, screen flickering, display crashes, or GPU usage that stays unusually high, it may be time to have your computer looked at by a professional. If your computer has also been getting stuck during restarts, the problem may not be limited to the GPU.
At Geeks on Site, our technicians can diagnose graphics-related issues, update drivers, identify failing hardware, and help get your computer back to running the way it should, all from the comfort of your home or office.
FAQs
How do I know if my GPU is going bad?
Your computer will usually give you a few warning signs. You might notice screen flickering, colored lines or strange shapes on the display, or your screen freezing before recovering with a display driver error. Another red flag is GPU usage staying unusually high when you’re only doing basic tasks. If these issues keep coming back, it’s worth having your computer checked before the problem gets worse.
Is 90% GPU usage bad?
Not necessarily. During gaming, video editing, or other graphics-heavy tasks, it’s completely normal for your GPU to run at around 90% or even higher.
The bigger concern is seeing those numbers while you’re only using your browser, checking email, or working on documents. That usually means something in the background is using more graphics power than it should.
Why is my GPU at 100% but my CPU is only at 20%?
There’s a good chance everything is working exactly as it should. Games, video editors, and other graphics-heavy apps depend much more on the GPU than the CPU, so it’s common to see one working much harder than the other.
If you notice the same thing while you’re only doing light tasks, though, it’s worth checking for a background process, an outdated graphics driver, or even malware.
How do I lower my GPU usage?
A good place to start is by closing any apps or browser tabs you no longer need. If you’re gaming or streaming in high resolution, lowering the graphics settings or display resolution can also reduce the workload on your GPU.
If you’re still seeing unusually high usage, check whether apps like Chrome or Discord have hardware acceleration enabled. Updating your graphics drivers is another simple step that’s worth trying.
Last Updated on July 24, 2026
