Michael @ the-diy-life.com posted detailed instructions of how to build your own Arc reactor CPU performance monitor:
In this project, I’m going to be showing you how to turn one of these popular DIY arc reactor kits into a useful Arc Reactor CPU performance monitor for your computer. It plugs into one of your computers USB ports and displays your CPU performance on the OLED display and the arc reactor pulses according to your CPU usage, increasing the pulse frequency with an increased CPU load.
Project info at the-diy-life.com.
Check out the video after the break.