Would the use of gfxCardStatus to select the Intel onboard graphics help reduce the amount of heat produced in total? I don't always require the 6750M to be in use, for example, when I'm coding for web or reading stuff via firefox. I use iStatMenus 3 to set my fan speeds. I've got them raised slightly at 2,400 RPM both left and right. Is this safe to have this speed the default minimum? Which fan is also responsible for the CPU and GPU? Thanks!