Everytime I try and use one of those Complex 3D web games, all 8 cores of my computer go to 100% and my computer becomes unresponsive until I kill the web brows

Everytime I try and use one of those Complex 3D web games, all 8 cores of my computer go to 100% and my computer becomes unresponsive until I kill the web browser. Its really amazing how inefficient those Complex 3D web games are.