SensorsView

SensorsView is a utility, that monitors the temperature of your CPU, northbridge, motherboard, VGA and hard disks, as well as voltages and fan speeds (as supported by your motherboard).
It can alert you if the values reach a critical level, and also provide a complete overview of the measurements.
In addition, the program shows usage of CPU, physical memory, HDD, NIC (Network Inerface Connection).
Features:
Support almost all monitoring chips and motherboards.
Notification at critical values.
You can set a threshold of concern and correction.
Sending email.
Graphs.
Showing chosen parameter in the tray.
Showing CPU usage.
Showing physical memory usage.
Showing HDD usage.
Showing NIC usage.
Auto-check for new versions.
Log file for events and warning messages.