Components and Design

The Scythe Infinity is one of the largest CPU coolers on the market and when it comes to heatsink fans, size can make a difference; more surface area means potentially better heat transfer.  The Infinity is a tower style cooler and incorporates five, U-shaped, copper heat pipes to transport heat from the heatsink base up to the large surface area provided by the aluminum fins.  (The smaller Scythe Ninja uses six!)  A heat pipe is a highly efficient conductor of heat.  A properly constructed heat pipe has a very low thermal resistance, which is roughly independent of its length (unlike ordinary metal rods whose thermal resistance increases with length).  Heat pipes are commonly used to transport heat from one location to another.

 

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Heat pipes work on the principle of evaporation and condensation.  A working fluid (frequently distilled water) evaporates inside one end of the heat pipe (the hot-end) absorbing heat in the process.  A partial vacuum inside the heat pipe allows the water to evaporate at low temperatures.  Once formed, the water vapor diffuses from an area of high vapor pressure (where it is being generated) to the other end of the tube where the vapor pressure is lower.

 

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The vaporized fluid then condenses back to liquid (cold-end) and the heat is dissipated into the air from the metal cooling fins.  The working fluid returns to the hot end via capillary action thru an internal wicking structure (sintered metal coating, fine wire mesh, or grooves) so the heat pipe does not have to rely on gravity to recycle the working fluid.  The key to a heat pipe’s high efficiency is the latent heat of vaporization.

 

The Scythe Infinity is similar in many ways to several other tower-style CPU coolers on the market today.  All of these coolers use multiple heat pipes and are designed to work with a fan.  As you can see, the Infinity is the largest in the group and very similar in construction to the Hyper 6.

 

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Cooler Master Hyper 6

    Scythe Infinity 

    Zalman CNSP9500 AM2 

 Thermalright Ultra-120

 

 

The Infinity’s large array of aluminum fins uses an interleaved design that Scythe claims will work well with quiet, low-speed fans or noisier, high-speed fans.  The tighter spacing around the heat pipes provides more surface area while the sections with wider spacing produce less flow resistance.

 

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