During intensive browsing with approximately 50 tabs, I have found that Firefox 3 generally consumes less than half of the memory used by Firefox 126.96.36.199. Firefox 3 is also snappier and more responsive when switching between tabs and performing other operations that typically lag in Firefox 188.8.131.52 when the browser is experiencing heavy load.
Firefox 3 no longer a memory hog
Posted on Thursday, Mar 20 2008 @ 10:55 CET by Thomas De Maesschalck
ARS Technica reports beta versions of the new Firefox 3 browser use significantly less memory: