One big reason to use a security suite rather than a collection of individual utilities is that the integrated suite can do its tasks using fewer processes and a smaller chunk of your system's resources. Or at least, that's what ought to happen. Few modern suites have an appreciable effect on performance. For a hands-on measure of just what effect installing a suite has, we time three common system actions with and without the suite installed, averaging many runs of each test. One test measures system boot time, another moves and copies a large collection of files between drives, and a third zips and unzips that same file collection repeatedly. Suites with the very lightest touch have no measurable effect on the time required.