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Reduce Firefox RAM usage and Improve System Performance

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If you are running with low RAM on your computer, you can improve the system performance a little by reducing the Random Access Memory usage of Firefox browser. By default, there is a minimum RAM usage reserved by Firefox than it actually needs. If your PC is brand new with enough RAM modules, you do not need to worry about this part. However, for an older computer system, you may need to release the unnecessarily reserved RAM/cache usage by programs installed. If you do not know how to check the current RAM usage set on Mozilla browser, follow the instructions provided here.

Steps to Disable Over RAM usage of Firefox Browser

To do this, follow the instructions carefully.

  1. Access Config Window

    Type about:config in the address bar and press enter. Now we will get a warning window like below. We should click I'll be careful, I promise button.
    Configuration

  2. Right click on browser.cache.disk.capacity

    Now find "browser.cache.disk.capacity" in the Firefox configuration window and right click on that. The default value set for browser cache is 51200. To reduce this, click on modify.
    Reduce cache usage (of Firefox browser

    Now set the new value to 20000 to limit the cache usage of Firefox.

Always make sure the changes do not affect the permanence of Firefox. If you are seeing any performance issues, you have to change the value to default and then reduce the cache usage step by step. For example, if the limit 20000 is not sufficient, you have to increase it to 30000 and check. If the issue persists you have to set the limit as 35000. You can use different values as per the needs.

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Alex George
Alex George has Engineering graduation in Computer Science and an MBA in Finance. He had been working as a senior Network Engineer for ten years. His specialization is in Cisco products. Traveling is one of his hobbies and visited various places as part of his onsite work. He visited different places as part of his onsite work like New York, Dubai, London, etc. Right now Alex is a director of one of the leading career development firms in India, which trains students for UPSC, SSC, and PSC examinations. He guides a lot of students to get selection for various prestigious institutions like CBI, Income Tax Department, etc. Alex George is a stock market investor and a very active intraday trader. Engineering Background: He has a B.Tech in Computer Science and Engineering and passed different network and security courses like CCNA, CCNP (Security), CEH, and various Microsoft certifications. Finance Background: Alex has an MBA in Finance. He is an active intraday trader and a Share Market Investor. Webmaster Skills: Alex is a blogger since 2004. He has a working knowledge of HTML, CSS, PHP, and JavaScrip.