Skip to Content

Test how much Spectre and Meltdown hurt your PC

Have you noticed a major slowdown in your PC, laptop or mobile device? You’re not alone.

Nearly everyone is affected by a major design flaw in most computers, notably with Intel processors, that can slow down your computer by up to 30 percent. That’s a huge hassle, but keep reading because now there’s a way to find out how much your computer has slowed down.

We’ve been telling you for a couple of months about Meltdown and Spectre. These are design flaws that affect most computers, laptops, mobile devices and cloud-based systems.

These aren’t malware or ransomware attacks like you’re accustomed to hearing about. They’re not hacks.

In fact, they’re potentially worse. These are vulnerabilities built into your computer that can let hackers steal your passwords and other private information.

Note: Click here to find out how to patch Meltdown and Spectre.

Meltdown and Spectre

Both Meltdown and Spectre involve vulnerabilities in processors that could let hackers access your personal information. They do it in slightly different ways, although both exploit speculative execution, which lets your computer predict which task you’ll be performing.

Hackers can access your system memory with the Meltdown vulnerability. Spectre uses other applications on your computer to access memory.

The result is that hackers can steal your passwords, text messages, photos and important documents. Fortunately, it doesn’t seem there have been any attacks just yet.

5 steps to test your slowdown

Unfortunately, the patches for these vulnerabilities can dramatically slow down your computer? There is a way to test to see how seriously you’ve been affected.

1. Update your computer

There are patches for Meltdown and Spectre. Make sure your computer is updated.

In Windows 10: Click on the start button (window icon in lower left corner of your screen) >> Settings >> Update & Security >> select Windows Update from the menu >> make sure it’s updated.

You can also try the FREE utility from Gibson Research called InSpectre to ensure your computer is up-to-date. Click here to find InSpector for Windows.

2. Files needed for test

You need two free files to run this test. Search Google for Cinebench R15.038.

The second one is CrystalDiskMark 6. Download both of these files.

3. Prepare your computer

Make sure you are working offline. If you’re using Wi-Fi, select Airplane mode.

You will be more affected by a slowdown if you’re using a solid-state drive than if you’re using a hard drive.

If you’re using an SSD: Start button >> click on the folder, that’s File Explorer >> click on This PC >> right-click on C: >> Properties >> Tools >> Optimize. Reboot your computer and wait a few minutes before performing tests.

4. Perform the tests


Unzip the Cinebench file. Windows 10 has a built-in decompression tool to do this.

Create a new folder for each test. Take out your smartphone and use its stopwatch to time each test – test it three or so times.


Right-click on InSpectre. Select Administrator.

You’ll want to disable the Meltdown and Spectre patches for the test. Be sure to enable them once you’re finished.

5. Review results

Check your test results. You might see a slowdown of as much as 30 percent for having the Meltdown and Spectre patches.

Note: Keep reading Happening Now for updates on these vulnerabilities.

You will be affected by this massive mistake! A second critical chip flaw revealed, affecting billions of computers, smartphones and other devices

You know that has been your No. 1 resource for the massive Meltdown and Spectre flaws. This affects just about everyone, no matter what type of device you’re using or which processor you have.

Click here to find out everything you need to know about Meltdown and Spectre.

Stop robocalls for good with Kim’s new eBook

Robocalls interrupt us constantly and scam Americans out of millions of dollars every year. Learn Kim's best tricks for stopping annoying robocalls in this handy guide.

Get the eBook