For my cooling, I use 2 of these:
http://www.frozencpu.com/products/93...?tl=g40c14s757
For my fans to attach to the heatsinks I use 2 of these:
http://www.newegg.com/Product/Produc...82E16835213001
They tend to be on the noisy side, but they do a great job. With lesser fans, the temps are about 20 degrees higher. I thought about getting the version of the heatsink where you could use 140mm fans, but they didn't have any that moved sufficient amounts of air to suit me so I got one that uses the 120mm fans. Considering how much I have stuffed into this case and motherboard, I think it runs rather well. I also have an Areca 1280ML with 2 GB of cache, with 8 hard drives in the main case and 2 external cases each with 8 hard drives. Total storage is 20,000 GB or 20 TB. I have 4 WD 500 GB drives in a raid 0 for my bootup, 10 WD 1 TB drives in raid 6 for 8 TB, 10 Samsung 1 TB drives in raid 6 for 8 TB, and an external 2 TB drive. I average for all of the raid arrays around 1.4 GB /sec... yes it really is that fast lol
The downside of this board is the bootup time in terms of checking all the components. Once I am in Windows, everything is almost instantaneous. Officially this board supports only 48 GB of ram, but unofficially I've seen people running it with 96 GB of ECC registered memory, since the chipset (5520) can easily handle that. What do I use all the ram for? I do a lot of video and sound editing, as well as running multiple VM's. I'm also a very big gamer as well, so if you have Steam, add Asusdude24 to your friends list. I always welcome the opportunity to play with others. If any of you do ever get this board, make sure you have a power supply with enough power.... I had a PC Power and Cooling 1200 watt and that was not enough to drive this system so I went with the Silverstone ST1500 and everything is smooth without any problems whatsoever.