(At least, I think it's the northbridge. This is the tiny little fan about an inch away from my processor socket.)
This little fan has been rattling something fierce over the last week or so. It's going to need to be replaced before it does permanent damage to my sanity. That said, I'm seeing a lot of "northbridge cooling kits" which consist of just a heatsink and some thermal goo. Now, it's generally pretty cool in my room anyway and I don't imagine that tiny fan is moving all that much air. Is a fan necessary? Is cooling of any kind even necessary?