Here is my latest creation. I would say that due to the heat density of the chips any proper waterblock would need to be rather weighty. Still fluctuations in air temperature do not affect it which is nice.
EDIT: Also a parallel setup going to each cluster separately would work much better than serially as shown here.
http://i.imgur.com/6GXbfg1.jpghttp://i.imgur.com/dbRLGfO.png Nice rig Cablez, like it a lot. Any project going on a custom made waterblock here?
I haven't heard of anything for Bfl hardware yet but that may just be a fact of so little hardware floating around. I actually went back to air cooling as I get better temps just sticking it in front of a house AC vent. (and the footprint is much smaller, lol) Its also tricky as any kind of experimentation requires the unit to not be hashing, luckily I am not into ROI much and yes I am not there yet

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Back to waterblocks I do see that there is some work going on for avalon modules. That could be promising for those guys as its a beefy block. We shall see.