Graphic card temperature (issue?)

Hi everybody, i've just discovered Speccy and i'm very impressed, i was used to check my pc stats using several programs together but Speccy does the work of them all just fine.

The only problem i have it's that it doesn't detect my gfx temperature.

I have a Nvidia GTX 570, which is recognized by Speccy.

Below there are some screenshots and my .speccy file.

Thanks for anyone willing to help me :)

.speccy

1PeCI.png

S3PAJ.png

EDIT: my bad, i just realized i posted in the wrong section

hi i'll move this topic to the right board