The Auras SMF-660 heatsink is a compact Intel heatsink that weighs just over 400 grams, stands 108mm tall, and hides its lone fan quietly away. If you've been faced with the problem of an ill-fitting processor heatsink for a compact PC chassis, take comfort that sub-150mm tall CPU coolers do indeed exist. Auras ship the SMF-660 heatsink with a 92mm PWM fan that scales in speed from 1200-2100RPM with compatible motherboards.