Did you ever have feeling that your computer has been getting slower lately? Got dropping Framerate for no apparent reason? Everything generally feeling more laggy, even though the software stayed the same?
Chances are, your machine is just suffering from dust accumulating on the heat sinks. Once enough settles there to form an insulation layer, your fans start spinning faster and your GPU/CPU begins throttling in order to prevent overheating.
Luckily, there’s a real low tech solution to the problem: use a vacuum cleaner to remove the lint from inside your box (make sure, the airflow can’t turn any fans. You don’t want to turn them into generators). You’d be surprised how silent clean fans can be. You also get a lowered power consumption as a bonus.