Browser.cache.memory.capacity

This configuration ensures Firefox writes no cache data to your disk, only using RAM for temporary storage. The trade-off is that all cached data is lost when you close the browser.

If you have a low-RAM system or find that Firefox is consuming too much memory, reducing this value can free up RAM for other applications. It forces Firefox to rely more on the disk cache [5.5]. How to Configure browser.cache.memory.capacity Browser.cache.memory.capacity

It s important to distinguish browser.cache.memory.capacity from Firefox s (back-forward cache). While both use RAM, they serve different purposes: This configuration ensures Firefox writes no cache data

To get the most out of your memory cache adjustments, consider tweaking these related preferences inside about:config : It forces Firefox to rely more on the disk cache [5

| Available RAM | Conservative (MB) | Balanced (MB) | Performance (MB) | |---------------|-------------------|---------------|-------------------| | 4 GB | 32 (32768 KB) | 64 (65536 KB) | 128 (131072 KB) | | 8 GB | 64 (65536 KB) | 128 (131072 KB)| 256 (262144 KB) | | 16 GB | 128 (131072 KB) | 256 (262144 KB)| 512 (524288 KB) | | 32 GB+ | 256 (262144 KB) | 512 (524288 KB)| 1024 (1,048,576 KB)|