*Review: FrostyTech (
http://www.frostytech.com/articlevie...ticleID=2131)*
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Amazingly enough, the Thermalright Ultra-90 heatsink is almost as powerful as the larger Ultra-120 heatsink. As you might have guessed the numbers trailing the 'Ultra' relate to fan size; 92mm or 120mm. Like the Ultra-120, the Thermalright Ultra-90 heatsink is built around three U-shaped heat pipes, a few dozen widely spaced aluminum cooling fins and a copper base plate. The heatsink is sold without a fan, the idea being it allows users to customize it with the fan of their choice. A good low speed 92mm fan translates into quiet cooling, or a high speed 92mm fan would yield lower temperatures with some sacrifices to sound output. The Thermalright Ultra-90 heatsink is more compact than its brethern, but remarkably the performance differences aren't nearly as large as you might expect. The only downside for us was the lack of fan clips.... once again a paper clip saves the day.
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