Features of NOCTUA NH-D15 G2 HBC Brown 140mm Dual Tower CPU Air Cooler ( Brown )

NH-D15 G2 HBC
High-base convexity variant

• Second generation

Further improved second generation of the iconic NH-D15

• Superior performance

8 heatpipes & 20% more surface area for higher heat-loads

• State-of-the-art fans

Dual NF-A14x25r G2 PWM fans with speed-offset

Next-generation performance

For an entire decade, the original NH-D15 was widely regarded as the best air cooler on the market. The G2 version continues this legacy by further improving the renowned quiet cooling performance of its iconic predecessor. Especially in challenging conditions with higher heat-loads, the NH-D15 G2 can achieve up to several degrees lower temperatures and thereby offer a thermal headroom that enables higher turbo clock speeds.

Optimized, asymmetrical fin-stacks

The NH-D15 G2 has been painstakingly optimised to best utilise the superior airflow and pressure performance of the novel NF-A14x25r G2 fans. Thanks to the fans’ improved P/Q performance, the fin-spacing could be reduced from 1.9mm to 1.6mm, which made it possible to integrate 26 extra fins and increase total fin surface area by 20%. At the same time, the width of the front fin-stack has been cut by 5mm so that the loading is more balanced between the two fans.

More performance, smaller size

Thanks to the higher fin density made possible by the new NF-A14x25r G2 fans as well as the asymmetrical fin-stacks and a slightly smaller gap between the stacks, the G2 version combines improved performance with a slightly smaller size compared to the original NH-D15 (9mm less heatsink depth, same heatsink width, same total height including fans).

8 heatpipes for superior performance at higher heat-loads

The NH-D15 G2 utilises eight instead of six heatpipes compared to the original NH-D15. The increased thermal capacity of the extra heatpipes is especially helpful at extreme heat-loads such as 250W and beyond, where the performance boost over the original NH-D15 is the biggest.

Specialized HBC (High Base Convexity) version

The High Base Convexity (HBC) version achieves optimal contact quality on CPUs that become strongly concave when the socket is closed due to the pressure of the ILM (Independent Loading Mechanism). As such, it is ideal for Intel LGA1700 processors if no washers or so-called contact frames are used to reduce ILM pressure or if the CPU has been permanently deformed in long-term use. 

High RAM compatibility in single fan mode

Thanks to its recessed lower fins, the NH-D15 G2 provides at least 59mm clearance for tall memory heatsinks in single fan mode, making it compatible with most high-end RAM modules on the market. In dual fan mode, the NH-D15 G2 should either be used with standard height RAM (up to 32mm) or, in chassis with more than 168mm CPU cooler clearance, the front fan can be moved upwards to make room for memory modules taller than 32mm.

Two NF-A14x25r G2 fans

Noctua’s next-generation NF-A14x25r G2 fans set a new benchmark for performance-to-noise efficiency in round-frame 140mm fans. Their superb acoustics as well as their superior airflow and pressure characteristics are one of the cornerstones that enable the NH-D15 G2 to push beyond its legendary predecessor.

Specification of NOCTUA NH-D15 G2 HBC Brown 140mm Dual Tower CPU Air Cooler ( Brown )