Monitoring
Monitoring
You can obtain gadgets such as @ TheDoubleYGamer. Here are the links you requested: CPU usage at http://addgadgets.com/all_cpu_meter/, GPU usage at http://addgadgets.com/gpu_meter/, and network usage at http://addgadgets.com/network_meter/.
It needs a rainmeter. It's the top desktop widget I've encountered.
I employ OpenHardwareMonitors devices. Easy and compact. (Personal note, not my own, found a picture)