I've got a NeoHE 500 in my 900, so no Fan-Only connectors are available to me. Just set the switch to L and call it good. Exactly like I did on the demo system that I built for a LAN. It's now a desktop for someone at the company so I hunted it down, dB meter at the ready.
Holding the meter 4" from the top of the 900, centered over the fan, the lowest reading I saw was 39. It would jump when doors opened or people talked. I moved about the office trying to find the quietest spot and could only get it down to 36. Can't say that I hear any difference. My system at home is under my desk by my feet. I might see if I can turn off everything in the house and measure it for you guys though. Give you an objective number. It illuminates the entire room and out into the hall when the room lights are out, but it doesn't make enough noise for me to care.
Quieter than night? You guys need a different solution than the 900, so back to the P182.
Does anybody have a thermal imager in order to see the difference in the heat affected zone in the CPU cooler when blocking the rear v. top fan opening
![Question :?:](./images/smilies/icon_question.gif)
Just put a piece of perspex over the side and photograph through that.
The reason I ask is: An engineer at a defense contractor I worked at once grumbled something to the effect, "Enough fans can make the heat go sideways... I guess." He was referring to a multi-controller/multi-drive disk array I had constructed for a Sparc 20 that was going in a plane, so the sting of the remark made it memorable.
![Embarassed :oops:](./images/smilies/icon_redface.gif)
Can't take that stuff personally, though sometimes I still do. I did not have room to put in all the drive sleds and the fan tray, so I kluged the fan tray onto the front blowing into the enclosure. Mine ended up getting put in the climate controlled server room (hilarity ensued, but that's another story) for the developers to mount from the server and access realistic amounts of data and a custom cabinet was fabbed for the heat of the real world. With fans on top...
![Confused :?](./images/smilies/icon_confused.gif)