The Silent 1156
In Figure 3, we have a front view of the cooler. The 90 mm fan has a plastic cone that directs the airflow to the heatsink.
In Figure 4, you can see the side of the cooler. Note that the heatsink is relatively small and it does not stay exactly over the base, so the cooler occupies little "airspace" over the motherboard. With this design, the fan does not interfere with memory modules, even if they have tall heatsinks.
In Figure 5, you can see the back of the cooler. The fins are firm and the cooler has an excellent overall quality.
In Figure 6, you have a top view of the cooler. Note that the heatsink is relatively small, with plain fins.