I have a Samsung NP530 ultrabook and it run very hot and loud when the IGP is in use (eg. on Google maps with 3D building, etc...).
I don't need a lot of power and I prefer when I work in silence so I already activate Powersave governor for the CPU and limit its frequency to 800Mhz. Even with a high CPU load it keep cool but I didn't find anything to keep cool the GPU (HD 4000).
So is it possible to underclock or set a frequency to Intel HD 2/3/4000 (IGP) to keep it cool ?