What is your Northbridge temp like? I'm having all sorts of trouble with mine since fitting an Akasa Nero (other coolers that use horizontal fan will be the same I think). Issue is that the stock HSF blows air down onto motherboard and cools the chipset at the same time. The horizontal fan does nothing to cool the chipset. It looks to be real difficult to get another fan in there so I'm thinking to put a 120mm fan in the side panel. At the moment I'm running with the side panel off, but still chipset is at 60deg with the cores at only 55.