Hello,
I am a member of a german watercooling company (all products are made in house)
http://www.anfi-tec.de/andre/banneranfi.jpg
anfi-tec.de
we are currently developing (for the user toolhead) a custom waterblock for the BitBurner XX Board for maximum overclocking performance combined with a high density--> https://bitcointalk.org/index.php?topic=179769.980