Noctua has responded to the siren call for a more compact CPU cooler with its NH-U9S heatsink. It claims this mid-size cooler has "100% RAM compatibility" and "100% compatibility with PCIe cards on miniITX" motherboards. That's relatively easy to accomplish by sticking to the Intel/AMD thermal design guidelines, but how much thermal performance is sacrificed? The NH-U9S heatsink stands 125mm tall and has a square footprint of 95x95mm. Weighing 618 grams, the heatsink is built around five 6mm diameter copper heatpipes which are soldered to the aluminum cooling fins as well as the copper base plate, in typical Noctua fashion. [FROSTYTECH] via [Frostytech.com]