How Many Resources Does GeekTool Use? Previously before, I didn't touch apps like GeekTool because I was afraid that it would slow down my system performance severely. (MacBook Pro 15" C2D 2.4ghz Late 2008) However, I have decided to use it as a clock on my wallpaper.

How much CPU % would GeekTool use? I only have the measly 2 hour battery for the MacBook Pro, so conserving as much CPU cycles as possible would be my aim.
I have the same machine as you do and have GeekTool running.

My GeekTool atm uses 0.0% CPU and 19.9MB of RAM.

I have several geeklet's running which poll different websites or system processes. (9 Geeklets)