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Speaking of gaps that need to be plugged ..  all the way on top we can clearly see the in and outflow connectors. When you focus a little onto the middle you'll notice the memory locations. Count with me, what did you get? Exactly 12 spots means 12 memory chips x (16M) 32 bits =  384-bit. This is how NVIDIA accumulates it to a 384-bit product.

We need to fit the proper tube fittings on there like so. Make sure it's secured tight so you have no risk a water leakage; bloody hell (that would be something, yikes!).

We use a small and long fitting. One leads water to the radiator and I'm using a short one to connect tubing to the second 8800 as we'll be testing SLI.

For your information, I am using my own clamps here, they are a little easier to (dis)connect. Secondly notice that this is a Intel based nForce 590 SLI platform which I initially wanted to use to overclock the living daylights out of the system opposed to risk our new 680i based system.

Now here's something really bothersome .. although that rig above looks really cool .. I just learned the hard way that there would be no way to equip this mainboard with a second water-cooled graphics card in SLI. There's just no space enough !

The two (SLI) PCI Express connectors are too close to each other, the 1/2"stiff tubing would simply not allow this as the lower card will be block the tubing.

** Update - there's a solution at hand for this issue. We'll explain it in the conclusion. SLI will work on any SLI mainboard.

So believe it or not .. we had to move all components  towards an nForce 680I test system, where the two PCI-Express connectors have more space and can handle two of these puppies in SLI.