I am reading about overclocking and water cooling in computers. Two things I have never heard of and I don't see any information about it on the site. What is overclocking? Why do you do it? And how do you do it? Is it something you do with the latest computers running at 2GH? Or can you do it with any old computer? Water cooling. Are the new computers over-heating because of their high speed? Or are those fancy video cards creating too much heat? CPU over-heating? or is it the RAM?