"At the heart of the Thermaltake ISGC-200 heatsink is a glossy white impeller that vaguely resembles the petals of a daisy. The tips of the fan blades have a little notch taken out, supposedly this reduces noise by 3% too. The ISGC-200 heatsink itself stands 140mm tall, weighs 470 grams and accommodates one 92mm PWM fan that spins at 600~1600 RPM."