Join Date: Oct 2012
Location: 3rd world country - Detroit
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If quiet is a concern, there's also liquid cooling. It's come a long ways in the past few years and isn't quit as worrisome as it used to be. But it also takes up a decent amount of precious space.
EMCDADE linked a heatsink with a Noctua fan. Noctua's are the only tan fans I know of. They also have a very good reputation for being very reliable, and very quiet. I can't offer much opinion on passive cooling since I've never gone that route. But I wanted to chime in on the Noctua fan and recommend their products as well.
Personally, in my 20 years of building computers, I've never once used an external / add-on fan controller. If a quiet, high quality fan is used in the first place, it shouldn't be needed. The lower fan speeds from low computer usage will cut down on dust collection though. This is my personal opinion of course and everyone is different when it comes to this.