78%    Abstract: Right now the Globalwin CAK38 is one of the top-tier copper socket A coolers available. It weighs in at 450g and comes with an almost unbeatable 6800 RPM Delta 60mm fan.  Manufacturer  Category  Published  Author  Globalwin   Cooling / Heatsinks   May 13, 2001   Max Page
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To find the answer to the question of whether or not Globalwin have managed to make this rough-looking heatsink into a high performance cooler, we tested the CAK38 on the Frosty Synthetic Temperature Test platform. The heatsink was compared against a variety of similarly performing heatsinks from a few different heatsink manufacturers.

FrostyTech Synthetic Temperature Test Platform:

The FrostyTech Synthetic Temperature Test Platform consists of an aluminum block heated by a 120V 250 Ohm precision resistor producing 50W of heat. That heat is transmitted to the heatsink via the aluminum block and up through special copper die templates with thermistors embedded directly in them.

A temperature reading for a particular heatsink is taken once the temperature stabilizes in the copper die template. Since each of the die templates have the approximate surface area of either a silicon topped or heatspreader-topped processor the flow of heat to the base of the heatsink accurately mimics a real life configuration.

Shown with the copper die template for a silicon-topped processor, the synthetic heatsink test apparatus awaits a coating of silver-based thermal compound and the Globalwin CAK38 heatsink. A slightly larger copper die template was used to test the effective cooling ability of the CAK38 atop a heatspreader-based processor like an overclocked PGA Celeron processor.