his is where the V2 differs from any other waterblock I've seen to date. As seen in the photo below Viscool began with a 5mm thick copper plate machining that plate from 5mm at the edges to 1mm thickness at its center. By cutting channels at right angles the remaining material leaves "pins" approx 4mm in height. This is an extruded pin design and just like air-coolers the goal is surface area. What Viscool has done was to bevel the base leaving an "impingement zone" at the center where the extruded pins stand. A truly unique feature of the V2 is the ring at the center circumventing and enclosing the upper portion of the extruded pins forcing the incoming water-stream into the center of the base. Although the inlet fixture or barb is offset a channel forces the water down through the ring over the pins and to the base. From below the ring channels can be seen cut into the beveled base where the water exits to the outlet.
In the V2 design the ring surrounding the pins at the base center come into contact with a slightly protruding center section from the toplate. This rough seal contains the water-stream forcing down through the "ring" into the deepest section of the base. The thumbnail below the photo shows a close-up of the toplate.
Using a small penlight the channels extending out below the ring can be seen more clearly. This is the first time I've tested any waterblock with this type of impingement zone. To be honest I was a bit perplexed as to how Viscool engineers integrated the "ring" onto/into the base. Thanks to MaxxRacer (Brian) of XtremeSys Inc
who infomed me the ring is "pressed" on.
Undoubtedly V2 is a unique block, and while my description of its inner working's may seem verbose I only hope to communicate the thought put into this design. Many waterblock's come and go and the extruded pin design takes many forums most of which begin to resemble one another save their overall attributes. In this respect the V2 won't make centerfold of the year in Waterblock Voyeur magazine, what is does do; however, is perform as we'll find in the next section.