My PC is heating up, what should I do?

Question

Video cards

The processor warmed up in games to 80 degrees when the critical temperature was 72, removed the lid, felt better up to 60. The video camera feels hot to the touch, although SpeedFan shows a relatively adequate temperature of 50-60 degrees, I don’t believe it, because when I touched the video card I was horrified, the system manager I decided to make myself a cup of tea. The question itself is: how to improve cooling, no additional fans, only power supply, tower, vidyuha. Maybe remove the second cover or even stick the gunpowder out into the fresh air?)