I have a ( yes, old, shame ) Soyo Dragon KT-600 Plus that's been the most stable board I've owned and still use. Sadly the day I got it I look a good look at the northbridge fan and said to myself that it wouldn't last a month. Well, it took a little more then a year! I could order a 40mm fan and plug it on there in place of the dead one- but I have 3x 80mm blowing air in, 1x 80mm blowing side, 1x80mm on top, and 2x 80mm exhaust. That's not counting the fans the PSU chugs or the heatsink. Also my flat has no heat so it's quite cold. Do I really need a northbridge fan, or can I make do without? Thanks! PS. All it ever did was rattle.