"Standing 158mm tall with a footprint of 125x72mm, the Noctua NH-U12S heatsink ships with single NF-F12 PWM fan that rotates at 1500RPM. The NH-U12S is built much like the NH-U14S, but is a better fit for cloistered motherboard processor sockets. As with its brethren, Noctua's NH-U12S heatsink supports a rear mounted fan if you want to run two low speed fans (for the sake of quiet), or a pair of fans at full tick for the best cooling performance possible. With that in mind, we'll test the NH-U12S heatsink in single and dual fan configurations. A second NF-F12 fan will run about $23.
The Noctua NH-U12S heatsink is built around five 6mm diameter copper heatpipes and a 108mm tall aluminum fin stack. Where the heatsink interfaces with the processor, we find a beautifully machined nickel plated copper heat spreader. Every component, from the fins to the heatpipes to the copper and aluminum base plates are nickel plated for oxidation resistance and the joints soldered to lower thermal joint resistance. As is tradition for Noctua, fit and finish is top notch."
