[TheFluff]

I don’t think you understand how any of this works. Thermodynamically speaking almost all the electrical energy going into the computer will be converted to thermal energy. If the GPU and the CPU are using the same amount of energy but one is hotter than the other because it’s not running its fans, then that means it’s actually transferring less energy to the surrounding air (and by extension, heating your room less). The temperature of the silicon really isn’t interesting at all here. An incandescent 40W light bulb has a wire heated to over 2000 degrees Kelvin in it, and yet it’s sure as heck not putting out more than 40W of heat. Physics!

Here’s a topical but completely pointless bit of trivia: an average human body dissipates an average of around 100W of energy as heat. Slow your metabolism and eat less to make your room less hot!