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Scythe Setsugen (SCVSG-1000)

Package and Accessories

The new cooler from the Japanese Scythe comes in a tall flat box with a photo of the cooler and its accessories alongside with almost all the technical info about it:

 

The cooler comes with a universal backplate, an aluminum heat-spreader plate for the voltage regulator components of GeForce GTX graphics cards, heatsinks for the memory chips and VRM, NVIO heatsinks, retention kits, Scythe thermal paste and a copper pad for the GPU:

Design and Functionality

It is hard to tell why, but Scythe Setsugen reminded me of Scythe Musashi. And even though the latter has a completely different concept, Setsugen can be considered evolutionary development of Musashi. Take a look at the new cooler:

 

Setsugen consists of a copper nickel-plated base with four copper heatpipes 6 mm in diameter coming out of it that hold four heatsink arrays with a fan sunk into their center. We remember that Zalman VF950 LED cooler has a fan sunk into the heatsink, although it hasn’t been implemented too well. Scythe Setsugen measures 180 x 33.5 x 139 mm and weighs 375 g.

Scythe Setsugen heatsink is designed with M.A.P.S. technology (Multiple Airflow Pass-through Structure), which we have already discussed before in our Scythe Mugen 2 and Kabuto reviews. Four independent heatsink arrays are connected to one another only with a few thin bridges, and the distance between the arrays measures 3 mm:

Each heatsink array contains 67 aluminum plates, each 0.3 mm thick. The plates are placed at 1.5 mm distance from one another. Two middle arrays and the corners of the external arrays are only 10 mm wide, which allowed integrating the fan into the heatsink like that. The calculated effective heatsink surface is 3350 cm2.

Note that the fan is by default installed in such a way that the airflow is driven away from the graphics card and towards the heatsink, instead of being directed towards the graphics card, as it usually is in most cases:

However, it looks like they only installed the fan like that in the very first Setsugen batches, because they started to recommend turning the fan the other way immediately after the launch and the first benchmark results, so that it could blow the air towards the graphics card sucking the air through the heatsink plates. It is true, in this case the GPU temperature under peak load turned out 3-4°C lower, and the temperature of the VRM components – 7-8°C lower.

Heatpipes are soldered to the copper nickel-plated base. It is finished perfectly:

The base plate is also impeccably even:

Now I have to say a few words about the fan used in Scythe Setsugen cooler. It is a slim SlipStream 120:

 

The fan is 120x120x12 mm in size that is why it could fit directly into the heatsink, instead of sitting on top of it. Its rotation speed can be adjusted using the enclosed variator on a bracket to be installed into back panel of the system case:

The fan can work at a speed ranging from 800 to 2000 (±10%) RPM. It will generate 19.4-45.47 dBA of noise and create 19.53-33.67 CFM airflow. The slide bearing used in this fan should last for 30,000 hours or more than 3.4 years in a non-stop operation mode.

 
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