Our test agents run on AWS EC2 c5.large instances, which provide plenty of CPU horsepower and are a good approximation for everyday desktop browsers.
Mobile devices are generally much slower than desktop, especially in developing countries where the next billion people will come online. So for our emulated mobile devices we throttle the CPU to better approximate the CPU available on actual devices.
Higher values are slower. A CPU throttle of 0 means no throttling, and 2 means half the CPU.
CPU Slowdown Factor
Apple iPhone 5
Apple iPhone 6
Apple iPhone 7
Apple iPhone 8
Apple iPhone X
Google Nexus 6
Google Nexus 7
Google Nexus 10
Google Pixel 2
Samsung Galaxy S III
Samsung Galaxy S4
Samsung Galaxy S7
Samsung Galaxy S8
If you want to change your CPU throttle or emulate any other older slower devices, you can create a custom browser in your Settings.
- Go to your Settings page and hit the green Edit Browsers button.
- Scroll down to the Custom Browser Profiles section and click the link to add a custom profile.
- The Add a Custom Browser page gives you a bunch of customization options, including Throttle CPU. In the example below, we've created a 2X CPU slowdown for Safari over 3G. We've named this profile Safari 3G throttled.
- When you've created your custom browser profile, hit the green Add button. This will take you back to your main Settings page, where you'll see your new custom profile grouped with your other browsers. This browser profile is now available for you to use in your Sites settings.
Updated 18 days ago