Guru3D - NvTempLogger

You Have the options to check the graph for the last 10 mins approx. and/or make a log file for as long as you like... The log file is being created on the desktop.

It is useful because can check what temperatures your card reached after running a benchmark or a game, especially if you are a lot in OverClocking.

V3.38 Changelog:

• New improved Logging : Now at the end of a
  session you can see Min , Max and Avg values
  of Core and Ambient Temps.
• Now Alarm Temp in options can accept 3 digits.
  Temp window position now is saved automatically
  upon exit.
• New tray icons made by a user of NvTempLogger
• Some other bug fixes.