Articles: Cooling

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Secondly, Scythe Kama Angle uses only four copper heatpipes 6mm in diameter that are curved on passing through the cooler base:

In other words, the contact area between the heatpipes and the base plate is bigger at a 90-degree angle than it would have been with the heatpipes going straight through. The grooves in the base plate that I like so much would have made this contact area even bigger, but Scythe engineers continue using flattened heatpipes instead. Moreover, the heatpipes aren’t soldered to the base: they are glued to it with special thermal glue.

The Scythe Kama Angle cooler measures 123 x 123 x 160 mm and weighs 755g with a fan attached to it.

The heatsink array consists of 60 aluminum plates spaced out at a 1.8mm distance from one another. Each plate is 0.4mm thin.

Scythe Kama Angle is equipped with a 120 x 120 x 25 mm fan from Slip Stream 120 series:


The fan rotation speed is controlled using pulse-width modulation (PWM) method in the interval from 324 to 1200 RPM. If you connect a four-pin fan connector to a three-pin plug on the board, the fan will be working at a constant maximum rotation speed of 1200RPM. The fan is claimed to create 14.4-68.5 CFM airflow at 6.4-24 dBA noise level. The fan is built with a slide bearing. The manufacturer didn’t mention its MTBF.

The fan is attached on the inside of the corner formed by the heatsink plates with two wire clips inserted into the special grooves on the heatsink array:


There are additional grooves for two more fans that can be attached to this heatsink, however, there are no extra wire clips for them included. I have to admit that I get pretty frustrated when the cooler makers try to save some bucks like that. Tell me, how much will another two wire clip sets cost? Three cents a piece? Five? Even ten! Why couldn’t they just throw them in and raise the cooler price by less than half a buck. Instead they offer you to purchase them separately…

The nickel-plated cooler base boasts remarkable finish quality and evenness:


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