The Fan:
Like most Vantec heatsinks, the FCE6030D uses a 6800RPM fan - protected with nice shiny finger guard. The Delta fans put out near 36CFM of air flow but generate a lot of noise. With upwards of 46dBa of noise produced, this is not the quietest heatsink out there. The fan uses dual ball bearings.

Heatsink Top:
this is one of the first commercial heatsinks we've seen from a major heatsink manufacturer to utilize a high aspect ratio fin design. Fins are grouped closer together than with a traditional heatsink to improve overall performance, and reduce size. With more fins crammed into the same footprint, surface area is increased dramatically. The cuts for the clip are 4mm wide.

Side A:
There does seem to be a trend developing in the design of heatsinks where fins are just about the same height as the fans used to cool them. In the case of the FCE6030D, the fan is 25mm tall, and the fins 20mm. Each fin is spaced 1mm apart (most heatsinks we looked at have a 2mm fin spacing) and range in thickness from ~0.8mm to ~0.6mm at the tip. The base is 7mm thick.

Heatsink Base:
Overall Vantec make some very good heatsinks, but the base always seems to be a bit lacking. As with most extruded heatsinks, the base is bowed inward very slightly. More significantly, the base finish is moderately rough. A machined base would be great to see, and I urge Vantec to move towards that level of finish. A small pack of thermal compound is included with the heatsink.