These huge aluminium heatsink are anodised black. Will black heatsink helps in cooling?Probably not. But look at the numerous fins on the Tagan heatsink, they will surelycreate a large surface area for the heatsink to loose heat quickly. The positionof the heatsink and direction of the fins allows the fan to remove the heat as fastas possible. The direction of the fan is placed such that air will draw in from theright and exhaust from the left, removing hot air from the casing and PSU.