>yet if an application, most likely Google Chrome, uses more than about 4-5gb, it crashes. 64bit apps shouldn't have such a limit under Windows, and can defini

>yet if an application, most likely Google Chrome, uses more than about 4-5gb, it crashes. 64bit apps shouldn't have such a limit under Windows, and can definitely use more memory. Perhaps you're seeing a case of RAM gone bad (where the large apps are much more likely to trip over the bad location)? Consider running memtest.