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iStat is a small program that monitors and displays information about the current state of your computer.
It takes up a lot of space, both vertically and horizontally, and there is no way to change the way it presents the blocks of information one after the other; also, there are no levels of importance to the information it shows, with everything being chucked in there.
For reference, iPulse displays all of the information that can be found in a full iStat strip except for the fans and temperature, in a block that is about 10 percent bigger than iStatÂ’s CPU block.