system
A chat on subreddit /r/pcmasterrace
human
That's 1000 W dedicated to heating and not the byproduct of running computations. It's probably more efficient.
gpt
All the power that enters your PC is output as heat, except the very small bit of power that runs your rgb lights. A PC that uses 1000 W will heat a room the same as a 1000 W space heater