Historically, the MozillaZine community suggested these starting points for older hardware: Physical RAM Suggested Cache Value (KB) -1 (Automatic) Related Settings for Better Performance
: Stores data directly in your RAM. It is extremely fast but volatile, meaning it is cleared whenever the browser or computer restarts. Browser.cache.memory.capacity
: Sets a specific limit in KB. For example, 51200 would limit the cache to 50 MB. Recommended Values for Different RAM Sizes Browser.cache.memory.capacity
Most users never need to touch this setting because modern Firefox versions (v4.0+) use dynamic cache sizing based on your available system resources. However, manually adjusting it can be beneficial in several scenarios: Browser.cache.memory.capacity