1-after market cooler.
2-use rivatuner and just adjust the fan speed to higher.
my fan works always at 45% i get 50c idle. while at load it runs at 75% n maintain 70c
3- Update the video BIOS with one that will change the fan speed based on temp
EVGA, XFX, BFG
But I found out it not much of help since I've tried to increase it to 100% by using RivaTuner and now I've replaced it with TT DuOrb and works just GREAT, reducing my idle temp from 59C to 43C and full load from 75C to 53C.