Modders-Inc posted a review on the Noctua NH-L9a-AM4
A quote from the article:
Noctua’s new NH-L9A-AM4 low-profile heatsink was built specifically for AMD’s AM4 socket and will cool up to a 65W CPU or APU. This diminutive little cooler has just a 114 x 92mm footprint and stands at only 37mm tall with the included Noctua NF-A9x14 PWM fan. That 92mm fan has a max speed of 2500 rpm, yet generates only 23.6db.Noctua NH-L9a-AM4 Review
Opening this package up reveals the classic Noctua unboxing experience. The presentation makes an already nice product feel that much more premium. In the box we’ve got the backplate with four mounting screws, longer screws for the fan, should you want to replace it with something thicker, a fan voltage reducer for even quieter operation, and a syringe of NT-H1 thermal compound.