Noctua has announced a pair of new low profile CPU coolers, the NH-L9i and NH-L9a. The coolers measure just 37mm in height and are compatible with both Intel and AMD processors. The coolers are perfect companions for mini-ITX motherboards, HTPCs, and slim PC cases. An NF-A9x14 fan that features Pulse Width Modulation is included to blow air over the tiny heatsink, and it features a maximum fan speed of 2500RPM. The pair of coolers are available now and have an MSRP of $47.90.