If you want to keep track of the ins and outs of your PC, you can place Windows Task Manager as an icon in the system tray; if you click on it, you can quickly view all kinds of parameters. If you are only interested in the information and not for the other possibilities of Task Manager, then O&O DeskInfo is a more interesting choice. This allows you to see processor usage, free memory, disk activity and network usage and addresses at a glance. You can display this information in a panel that automatically slides out of view or as a permanent projection on your desktop with adjustable transparency.
O&O DeskInfo you can here to download.
Click the link above to download for free O&O DeskInfo – System info in a compact overview