In Windows 8 - Task Manager is Awesome

One of the better upgrades that Windows 8 brings to the table can be found in the good ol’ (and previously boring) Task Manager. Load it up by typing “Task Manager” in Metro (or give your system the three-finger salute), and then click on the “More Details” link at the bottom of the window. Up pops Window 8’s new-and-improved Task Management program.
Of particular interest is the prettied-up “Performance” tab, which you can use to get a look at the last 60 seconds of your system’s CPU, Memory, Disk, or Network use. New to the program is its “App History” tab, which gives you a look at just how man resources your apps eat up over a lengthier period of time. And the ability to enable or disable apps that start with Windows itself has been moved from Windows’ System Configuration menu to the Task Manager’s “Startup” tab.