Articles: Cooling

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Design and Functionality

The design of Scythe REEVEN is fairly simple, but has two unique features about it. First of all I have to say that it is a tower cooler measuring 96 x 92.5 x 136.3 mm and weighing 425g. It consists of 39 aluminum heatsink plates and three copper heatpipes 6mm in diameter:



The plates are relatively soft, they are only 0.5mm thick. The gap between them measures 2mm, just like by the other coolers we have discussed earlier today. The calculated effective heatsink surface area makes 3,

The outer edges of the heatsink plates are turned down and perforated where the airflow exits the cooler. Moreover, these heatsink plates alternate with shorter plates without any perforation. This is the first peculiarity of the Scythe REEVEN cooler. This solution is likely intended to create a turbulence zone on leaving the heatsink that also sends the airflow down to the electronic components around the CPU socket and the heatsinks on them.


The second distinguishing feature of the REEVEN cooler is what Scythe calls Heatpipe Direct Contact. We have already come across Scythe’s first prototypes employing this technology on two tradeshows, but in reality the first cooler from Scythe to actually implement this is REEVEN. The difference between this cooler and similar competitors’ solutions is the absence of any aluminum or copper inserts between the heatpipes in the base, because all heatpipes there are combined into a single unit:


As a result, even though there are gaps between the heatpipes in the base, the probability of dead zones forming during the heat transfer from the CPU to the cooler is minimal. The heatpipes are slightly spread out away from one another inside the heatsink:

The cooler base is even and finished well enough for a solution using heatpipes direct contact technology:


Judging by the thermal interface imprint from the Core i7 processor heat-spreader on the cooler base we can see that heatpipes cover about 4/7 of the processor heat-spreader, while the rest contacts only with the aluminum retention panel. Nevertheless, we feel that it is not a severe issue of the new cooling solution, because the actual die size of this CPU is only 20% of the size of its heat-spreader, and as you can see, heatpipes cover well over that area.

There is a 92-mm fan on the heatsink attached with two wire clips.

Although this fan has a different marking than Scythe Katana 3 fan, it has absolutely identical specs: PWM 0-2500 RPM, 55.55 CFM, 31.07 dBA).

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