G5 Quad : a new watercooling

A reader from XLR8Yourmac has taken picture of the new cooling system of his Quad 2.5 GHz.

There is now 2 pumps while the tubing design is simpler than in the previous dual 2.5 and 2.7GHz as shown below:

Another photo gives information related to the manufacturer of this system : Cooligy.
This company has 2 main expertises:
- microchannel cooling :

The Cooligy system employs a fluid pumped in a sealed cooling loop. A microchannel heat collector is attached to the chip, efficiently absorbing heat generated by hot spots. The heat travels a very small distance into fluid flowing through channels in the collector, 20 to 100 microns wide each, which transport the heat away from the chip to a radiator, where the heat is exhausted to the outside air. The fluid then travels through Cooligy’s patented solid-state pump to complete the cooling loop.

- electrokinetic pump :

The design is based on an interaction between a fluid and glass. The walls of a fluid-filled glass tube carry a negative charge. That charge is balanced by positive ions in the fluid accumulating near the walls of the tube. When an electric field is applied along the length of the tube, the excess positive ions near the tube’s wall move parallel to the wall and push the fluid through the tube. The core of Cooligy’s pump is a glass disk with millions of paths through which fluid is pumped using this electrokinetic effect.

If Apple has been using both technology the current cooling system of the Quad G5 is probably the best one currently available for computers.
However, the required space to install such system has forced them to place the pump in front of the air flow. But it works perfectly anyway.