Thanks to its asymmetrical design, the NH-D15S does not extend over the top PCIe slot on most ATX and µATX motherboards. Additionally, the retracted lower cooling fins and single-fan configuration ensure 100% compatibility with memory modules up to 65 mm in height. If there is sufficient space, the cooler can be upgraded with a 120 mm or round 140 mm fan to achieve even better cooling performance in dual-fan operation. As a complete premium solution, it combines the efficiency of a dual-tower cooler with excellent compatibility and flexible upgrade options.