AMD's popularity with Ryzen CPUs (and upcoming APUs) has made waves across the industry, and Noctua have jumped in with a pair of low-profile offerings that update previous designs for cramped case interiors.
First up is the new version of the NH-L9a:
"The new NH-L9a-AM4 is an AM4-specific revision of Noctua’s award-winning NH-L9a low-profile CPU cooler. At a height of only 37mm, the NH-L9a is ideal for extremely slim cases and, due to its small footprint, it provides 100% RAM and PCIe compatibility as well as easy access to near-socket connectors, even on tightly packed mini-ITX motherboards."
Next is the new NH-L12S:
"The new S-version of the renowned NH-L12 not only adds AM4 support but also gives more flexibility and improved performance in low-profile mode. Thanks to the new NF-A12x15 PWM slim 120mm fan, the NH-L12S provides even better cooling than the previous model with its 92mm fan. At the same time, the NH-L12S is highly versatile: with the fan installed on top of the fins, the cooler is compatible with RAM modules of up to 45mm in height. With the fan installed underneath the fins, the total height of the cooler is only 70mm, making it suitable for use in many compact cases."
Noctua says that these new coolers now shipping "and will be available shortly", with an MSRP of $39.90 for the NH-L9a-AM4 and $49 for the NH-L12S.