On Frostytech's test bench today is the Silverstone Heligon HE01 (SST-HE01) heatsink, an interesting asymmetric dual tower CPU cooler built for Intel LGA2011/1366/1156/1155/775 and AMD socket AM2/AM3/FM1/FM2 processors. At the heart of the heatsink is a massive 140mm vaneaxial fan, flanked by differently sized fin stacks which correspond to intake and exhaust air flows. On the cool air-intake side of the fan is a 30mm thick fin tower with a straight row of heatpipes intersecting the fins. On the hot exhaust side we find a slightly wider, 50mm thick fin tower constructed from slightly thicker aluminum fins.

The PWM fan itself is non-standard, in that it's 38mm thick rather than 25mm and rotates at 800-2000RPM or 800-1200RPM depending on a small physical switch set into the frame. The Silverstone SST-FHP141-H fan is rated to move upwards of 48-171CFM air, which according to Frostytech's real world sound measurements equates to 40-60 dBA noise.