* Added section on cost efficiency
Added my considerations on how RAM should also be valued by price, not by it's technical specifications alone but also the practical sense of purchasing RAM within the scope of your potential machine.
* Correct heading level
- changed "you extend the life" to "extends the life"
- changed "there be at least two fans" to "there should be at least two fans"
- changed "Locate the computer where it is neutral to the rooms environmental registers." to " Place the computer in a neutral location away from the rooms environmental registers."
- changed "Locate the computer away from" to "Keep the computer away from"
- changed "airflow" to "air flow"