"It has very thin, tightly packed fins for high airflow situations. They are also folded down on the ends to keep the air flowing directly through the heatsink. The blackplate on the top of the cooler is attached to the blue LED fan and slides out with some encouragement, making it possible to put in a higher powered or lower noise fan. However, because it's located in the center of the unit, there's no option to add more fans or move the fan around."