RivaTuner doesn't recognise the latest Nvidia drivers
- maybe I need to update it but I don't think so.
However I've found that EVGA Precision works fine and allows me to control my fan speed, overclock (I don't myself) monitor my temps etc.
The only thing is don't download it from the EVGA site as they ask about your card details and I don't have an EVGA card. I got it from FileHippo or CNet or some such software site.
It works very well with my XFX card and previusly with a BFG card so it seems to work with any brand.
Hope this helps, John