Resource Monitor shows information about device like processor cores speed model ram sensors etc.
and you can monitor internet speed ( in notifications & status bar ).



Features:
• CPU usage and frequencies for each core
• Total CPU usage and average frequency
• CPU frequency graph for each core
• Time spent on each CPU frequency state
• GPU usage and frequency*
• RAM usage and ability to clear RAM
• Network activity
• Disk I/O activity (internal and SD card)
• View list of active apps and processes and their CPU usage RAM usage network activity PID and UID.
• View temperatures of all of the thermal zones
• Ability to keep running in the background despite being swiped away from the recent tasks list
• Floating mode - shows system monitor data on a little floating window on top of other apps