In a nutshell: Two years after it was first unveiled, Noctua's enormous, 1.5kg (3.3 pound) passive heatsink looks set for an imminent launch announcement after a listing for the cooler revealed its $100 price tag.

We first saw Noctua's "Fanless CPU Cooler" back at the pre-pandemic Computex 2019. The company gave a vague launch date of 2020, but, possibly due to Covid-19, it didn't go into mass production until December last year.

Now, Fanless Tech has highlighted a listing for the NH-P1 on Newegg. It's currently "Out of Stock," but it was shown with a $100 price earlier today.

The Computex prototype had a slightly different design

The NH-P1 features twelve 1.5mm aluminum fins, six copper heatpipes, and a copper heatsink. According to Noctua, it uses an asymmetric design for better PCIe clearance and is 100 percent RAM compatible on LGA1200/115x and AM4 motherboards.

Also read: The Science of Keeping It Cool

The cooler was demonstrated on an Intel Core i9-9900K back at Computex---an eight-core chip that can reach 5GHz and has a TDP of 95W. The listing's description recommends it be used with CPUs with low to moderate heat dissipation, including "the 9900K, 9700K, or AMD Ryzen 2700X, 3950X 3700X, 3400G."

Image: Fanless Tech

The cooler is not recommended for overclocking, and Noctua advises that a system's ambient temperature and components can affect the amount of heat dissipation the NH-P1 can handle. The company doesn't give a general TDP specification but refers consumers to the CPU compatibility list that will arrive with the official launch. Noctua recommends pairing the cooler with an ultra-quiet fan, such as its NF-A12x25 LS-PWM, for extra performance.

The cooler uses Noctua's Torx-based SecuFirm2+ mounting system, which is compatible with Intel's LGA115x, LGA1200, and LGA1200xx sockets and AMD's AM4, AM3(+), AM2(+), FM2(+), and FM1 sockets. Buyers also get a tube of second-generation NT-H2 thermal compound with the NH-P1, along with a six-year warranty.