and another thing, that i forgot, dust!!!!dust will slow down performance and can actually cause hardware to fail, blow out your case with compressed air, but dont shake it or tilt it upside down because that excrement gets cold and can cause some damage if used incorrectly, and filters for your fans are awesome, ive seen some, it allows air to come into your case but does a pretty good job on preventing dust from being gaining entry, id invest in one of them if u have a dust issue, but get a washable one, so u dont havw to re-buy some, hope this helps, these cooling fix's are pretty cheap, a good 120mm fan isnt 2 much, and they can light up (ewww ahhh)