In removing the fan you are greeted by 371 aluminum ribbed pins. This figure is up from the MC-462's 261 pin count. You can see the difference between old lion and young lion here. This increase in pin count is accomplished by reducing the pin diameter from 3.17mm to 2.38mm. With the pin count change and the addition of the Helicoid technology, Swiftech claims a 50% increase in surface area.