Thought this might be of some interest. Vadim Computers in the UK has a BlastFlow cooler for the SouthBridge that is a great improvement over stock. And EK makes a block the Maximus (X 38) that is perfect for the MCH once you fabricate some brackets. Pulled the rig apart last night This bastage is noisy...makes my ears ring... The three chips are not at the same exact level hence the use of thick tape by the factory. The MCH IHS is frigging HUGE. The XSPC X20 cooler I got from Vadim seems too small. I realize the IHS is always larger than the chip beneath but the XSPC X20 is round and only the diameter of the IHS...so a fair amount is uncovered...I decided to use the EK Asus X 38 cooler instead.. The waterblock is sweet: usual EK quality. But I needed to make up a pair of brackets to meet the SkullTrail MCH holes. I used the Springs from a FuZion kit and the screws and thumbnuts provided by EK to make it work. I used IC Diamond Diamond Dust TIM this time around. I could tell the IHS was crowned so I went heavy with the application. I also made up a backing plate using the BlastFLow X20 adapter for SkullTrail from Vadim by putting foam tape on it...although it is not as stiff as the steel Intel backing plate it was quick and easy and I needed to git r done. There it is: ready to remount inside the Soldam case. It's cleaner and easier for service in the future to run the tubing out of the case. I eliminated the bay reservoir this time so that pulling the CPU waterblocks would be simpler. The GFX are on a loop, the Chipset coolers are on a loop and the CPUs are on a loop: and there is enough length to remove them and set them outside the case if needed without parting the lines... I recabled the HDDs a little to make for maximum airflow. Bleeding is simple: I just open one loop at a time and run the Iwaki a few seconds to charge the line then refill the cylinder reservoir in the Monolith cooler. The lines are smaller in diameter and have less volume: this means increased flow. They are all connected to the Hydra which controls the flow for tuning and service via 8 ball valves (3/8) The cooler has been running for about 9 months non stop so I took some time to douche it out and refill it with fresh Dasani. Although far from silent...the sound is less annoying than an aircooled SKullTrail Quadfire set up. No leaks and everything is running pretty cool. The GFX waterblocks are full coverage blocks from EK (nickle plated) for the HD 3870X2s. They work great. With a 22C intake temp on the external cooler the cards idle around 30C. Underload the four GPUs stay under 50C. None of the GPUs runs significantly hotter than any other.