I have a fanless cooler on the G-force card, runs maybe body temp, the CPU uses a 6in blower, which can be use to dry ya hair, if need be. Blows the air out the side of the case.
BTW, received e-mail from Jimbo22 on MSI HQ User Community Forum to visit this hole.
i don't think its for mounting fans onto - looks more like a passive cooling solution due to the lack of fans and the ungodly large surface area that it has
Well, no single part is really the heart of a watercooling setup... You must have every part for it to work properly. If you cheap out on any one part your system will fail to cool as expected.