Morning Bit! At the weekend I totally stripped my system to give it a good clean. After putting it back together as it was, except the exhaust is now in the roof instead of the back. Booted my system and the fan is now making an awful racket. Looks like the bearing has gone. I'm currently running Sharkoon Silent eagle "golf Ball" 2000's 2 intakes and 2 exhausts. which ive had for about 2-3 years. Running 2 notua fans on my NH-UP12 I'm running my i7 860 @ 3.8 so that kicks out a little heat. My graphics card is a Gigabyte 460 which exhausts out of the case. So the heat from that isnt really an issue Is it worth replacing all 4 of these with something like the gentle typhoons? At some point I want to upgrade to water cooling but at the moment I cant afford it. Any help would be great.