Tips to Reduce CPU Usage in Internet Explorer
Unfortunately, we cannot do anything with the IE shell components that may prove heavy on computer resources. But we sure can customize almost all other factors to reduce the high CPU us age in Internet Explorer.
First of all, I would suggest you to install something that can track changes to your copy of IE. I use WinPatrol, a program that tracks changes to all my programs and to my computer (see image). It alerts me if any program installs a new IE add-on. You can always open Winpatrol -> IE Helpers to see what all is included in the IE. You can turn off or remove the unwanted add-ons using the program. It also checks for startup programs so you can also use it to reduce the startup speed of your computer.
You can also check the current add-ons, accelerators, search engines, etc by opening the Manage Add-ons dialog box. Click on the Tools menu (tools icon in Internet Explorer 9) and select Manage Add-ons. The Dialog box presents you with a list of add-ons, accelerators, and other IE Helpers that are currently packed into the browser. For IE9, you can also see the load time so it becomes easy for you to decide which ones to keep. For IE8 and previous versions, most of the add-ons are not really useful for you unless you are a website developer. Some such add-ons are Research, Discuss, Translate, etc. You can always disable them to reduce CPU usage in Internet Explorer. Similarly, check out the accelerators – email, blog, and more. You certainly won’t need such accelerators. Disabling them will not only reduce the resource consumption, it will also speed up your copy of Internet Explorer.
Note: If you are not sure about an IE Helper (addon), you can google it to see what it is and if you really need it on the browser.