This heatsink may look like a standard aluminum
cooler but on the inside it uses a very neatly little bit of technology to improve
performance. Tocools call this technology "Pyramidal Inside Cutting" and while that is
a little bit of a play on words, it does describe the
technology... sort of.
Let's start with the basics; because most heatsinks
are extruded from a mold under high pressure and heat there are some basic
limitations thermal engineers have come to accept. The most basic one which
relates to this heatsink is that extrusion heatsinks are essentially three
dimensional representations of a one dimensional pattern. A die is cut based on
a line drawing and that means the shape doesn't change.
Tocools have opted for a more mechanical approach and machined their
heatsinks into the final shape. In this way they are able to cut out the overall
shape, and change certain things that would otherwise remain the same with an
What they decided to change was something hidden from immediate view, and
something most of use wouldn't ever give much though to; they machined the
base area between each fin into a little triangle.
have been other examples of similar techniques, but nothing quite like Tocools
application on the Novasonic. Between each fin is a triangular shape, 20mm tall with
sides of 38mm each. As exhaust air from the fan travels in between the fins
and reaches the bottom of the heatsink it is
directed out, and towards either side by the shape of the base. This apparently makes
the heatsink less noisy, and as we have seen in the synthetic tests, more
efficient thermally. The Tocools Novasonic proved itself to be a surprisingly competent aluminum
heatsink, with just a 20mm thick 80mm fan on board.
For the moment you will have a hard time finding
this heatsink in retail stores, but if you look hard you might get lucky.