Temp up and down

[jeboots]

Hello,
http://i1155.photobucket.com/albums/p557/jeboots/temp.png
Can someone help with what is going on here with the ups and downs as shown?
This is what I see when I come back after the computer has been idle for awhile.

 

[calpol55]

"Min -130C" Lulz xD, the temperature monitors in the graphics card may be a bit dodgy, either that or the program might be glitching out a bit