One computer is hooked up to several other computers, the one computer gives jobs for the other computers to do, so while one is loading the backrounds of the game, the other controls the movement of the charachter, so it creates the ultimate computer, so the one doesnt have to do all the work, the others help it by doing some work. Say you have a the red basketball team, and the blue basketball team, the red basketball team is the computer, and has only one player, the blue basketball team is the game, and has five players, doesnt sound fair, so when the red basketball team gets players (computers) the odds become more even. so now the red team has 20 players, and their chances of winning are pretty good. They players work together as a team, which makes them all powerful. A parallel processer is alot more powerful, more effecient, and faster, considering its more than one computer. correct me if im wrong.