Browser.cache.memory.capacity ((better)) Today

If you have 16GB+ of RAM, setting a higher limit can make navigating back and forth through pages nearly instantaneous. Low RAM Systems:

51200 (50 MB) or 25600 (25 MB). Alternatively, leaving it at -1 often works, but manual caps can prevent aggressive caching spikes. Browser.cache.memory.capacity

Modifying this setting allows you to fine-tune how much memory Firefox allocates for temporary web assets, helping you balance browsing speed with system performance. What is Browser.cache.memory.capacity? If you have 16GB+ of RAM, setting a

The default setting ( -1 ) is correct for the vast majority of users. Mozilla’s engineers have spent years fine-tuning the adaptive algorithm to balance responsiveness against memory pressure. Modifying this setting allows you to fine-tune how

To get the most out of your browser's cache memory capacity:

In the search bar at the top of the about:config page, type: browser.cache.memory.capacity