The Fan:
The CAK38 uses a customary Globalwin fan, the seven-bladed 6800RPM Delta. The fans are advertised as double ball bearings, and produce a lot of noise (around 42dBa according to the stats). The Delta puts out 38CFM worth of air flow and comes with a standard wire-screen finger guard. Interestingly, the base of the fan sits 7mm above the tops of the fins.

Heatsink Top:
The CAK38 has 23 rows of fins, each segmented into roughly 8mm widths. With a constant 2mm spacing between each of the fins, airflow would seem to be conforming to the current standards. Fin thickness varies widely, and most of the fins show marks from the saw blads teeth. The clip is very tight to clip down.

Side A:
The entire heatsink sits in at 71mm in height with the fan guard in place, making it one of the taller heatsinks out there. The 25mm high Delta fan sits 7mm above the top of the copper fins, the space acting as a type of plenum. The copper fins are 30mm in height, and the base 5mm thick.

Heatsink Base:
With the markings more than evident from the machining on the base, the CAK38 has a brushed appearance. One corner of the base is notched out 11mm to accommodate the socket cam shaft.

Our tests with the straight edge on the base show that it is very slightly concave in shape. A good quality thermal pad, or space filling thermal compound is a necessity with this roughly finished base.