Originally Posted by PoopaScoopa
browser.cache.disk.enable = false
The new memory management in FF7+ makes it super slim on memory usage. Chrome has to duplicate the same memory chunks for each tab.
Firefox still makes extensive use of the page file. It might say its using 250mb, then have an extra 150mb paged. Chrome 15 vs FF 8.1 is pretty much identical in terms of memory use. Its just that Chrome doesn't have to fetch memory from the page file, so its more responsive.
Even FF7's UI lags a little with 10+ tabs open on my sig rig. The close tab animation goes at around 2 fps, which is annoying when you're trying to close a bunch of tabs at once.
Oh and when I was trying to get my memory usage over 1GB in Arch Linux, I had to open 46 different tabs in Chrome, then switch over to Firefox and open another 8 tabs, because adding more tabs in Chrome wasn't really getting me anywhere.