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Liquid-cooled search results

 Google has a newly-issued patent for dual-sided liquid-cooled motherboards. Are they ramping up density instead of building new data centers?
Patent 20080158818
Here’s the basic idea:

• The mobo has the hot components on 1 side and the less hot on the other.
• The liquid cooling unit is sandwiched between 2 mobos.
• Disks are on the outside of the sandwich, as is the DRAM.
• Fans are mounted on the outside to air cool the external low thermal load components.
• The hot stuff is next to the cold stuff.

Here’s a drawing from the patent:

The round holes in this side view are for the liquid coolant.
The patent was filed in December 2006.