I only can tell everybody at least one time in year build out your card, open it and clean the cooling channels. Is not enough to only clean the fan, you really must open it to get acsess to the whole cooling block and clean it.
Same for your notebook. A friend of me call me the laptop of his wife is became slow....I was wonder why the keyboard is so warm and after download "coretemp" the dual-core was idling at 90C
After open it and take the fan out there was so much dust, hair and other rubish stuck between fan and cooling block....
...my grandma kniters a Pullover out it for me
Tne Notebook now is idling at 48C Coretemp....
Andreas