"On the test bench today is Glacialtech's Igloo H46 heatsink - a tower style exposed heatpipe base CPU cooler that marks one of the best efforts for this Taiwanese thermal solutions manufacturer to date. Standing 158mm tall, the Glacialtech Igloo H46 heatsink ships with one 120mm PWM fan but is capable of accommodating a second rear-mounted fan (clips provided) should users wish to operate two fans at reduced speed and decrease fan noise overall. The Igloo H46's bright yellow fan impeller spins at 1600-800RPM. Weighing in at 560 grams, the Glacialtech Igloo H46 heatsink installs onto Intel socket 775/1155/1156/1366 and AMD socket AM2/AM3/FM1 processors."
FULL STORY @ FROSTYTECH (http://www.frostytech.com/articleview.cfm?articleID=2629)