But if your computer has only 1 GB or 2 GB of RAM installed, then Firefox can make your system a little sluggish after continued use over many hours. If you have large physical memory (RAM) modules installed then you do not really have to worry about the memory consumption from Firefox. But it is a big memory hog and can quickly consume nearly one gigabyte of your system memory. This is why it is so popular is the first choice of the security experts. Mozilla Firefox is considered one of the most secure and configurable web browser.
