The Deepcool Ice Matrix 600
In Figure 4, you see the front of the heatsink. The six heatpipes are placed "side by side", i.e., all of them receive direct airflow from the fan. There is also a small auxiliary heatsink on the base.
In Figure 5, you can see the side of the heatsink. Thanks to the heatpipe distribution, the heatsink is very narrow.
In Figure 6, you check the top of the heatsink. Here you can have a good idea of the fin design. The fins are made of nickel-plated aluminum.