A convenient low profile free CPU monitoring tool for windows* is CoreTemp - http://www.alcpu.com/CoreTemp/ - that can be run from desktop or notification area (system tray).
* XP, Vista, 7, 8, 2003 Server, 2008 Server (R2), 2012 Server - should be ok with 10.
- CPU Temp: 37deg C.
- RAM Usage: 54 %.
- CPU Load: 4 %.
For notification area Core Temp 1.0 RC6 and Core Temp Gadget 2.7 need to be installed (if my memory is correct).
Notifications area fast and rough Settings guide taken from Windows 8.1 64 bit OS.
Options >> [tick]: Toggle MiniMode
Options >> Settings >> General → [tick]: Enable plug-ins, → [tick]: Start Core Temp with Windows.
Options >> Settings >> Display → [tick]: Start Core Temp mimimized.
Options >> Settings >> Notification Area → [tick]: Processor load, → [tick]: RAM utilization.
Options >> Settings >> Windows Taskbar → [tick]: Enable Windows Taskbar features, >> Settings → [select]: Temperature.
Core Temp Monitor is now available, an Android and Windows Phone app to monitor your machines from anywhere in the world! More information can be found here.