Thanks, Burcakb, you explained everything exactly as I intended them
in that post I just jotted down a few remarks that sprang to mind based on the photo and description, in the assumption that others would "add to the list". I usually ramble a bit in my posts my so this time I tried to be brief for a change... ending up needing another member to elaborate
I did mean that IMO harddisks need air intake. Opinions vary on this subject though so others might feel different. Taking air in through the bottom of the case (which was what I meant) is just a possible idea, there are others of course. It all depends on what you want to achieve and how much time you want to spend achieving it. I am by no means suggesting that this is the only way to achieve any improvement and it does involve some work. To me, the biggest issue seems to be the fact that noise from the harddrive can directly exit the case. To find out if this is something to change, try to plug the hole with foam or something (just for a few minutes) and see if that improves anything.
I've seen the same cpu fan mount position on 6000's over and over. All it does in this way is disrupt airflow through the case and blow warm air over the heatsink, just like burcakb wrote. Don't get me wrong: it will cool the heatsink, since that will still be hotter than the air that gets blown over it, the cooling will simply be less efficient. How far is the cpu fan from the side of the case anyway? To close and the air impedance will cause the fan to become noisier.
What I meant by getting the cpu fan more "inline" (for lack of a better word) is something like this:
PSU | (case)|
| | ## : fan
######## | |
########-+ | /\ < : airflow
=== # | === : cpu heatsink
=== # < <
/\ === # +----------------+
h/s # < < | HDD |
=== # +----------------+
=== # < <
=== # |
I don't know if that explains it better... I meant it as a simple "you could try this without modding" means to improve cpu cooling. It will not help with the previous bit about the hard disk noise though.
By closing of the section you could get even better cooling results for your harddisk/cpu, but you should take care with the rest of the components. Depending on your motherboard (northbridge esp.) and video card, they might like some
airflow over them even if they are passively cooled. Still won't help with hdd noise... but I'l stop repeating myself. If the harddisk noise is an issue, you could try a Bluefront special: a "bird-house