CPU coolers rarely earn genuine halo-product status, yet Noctua’s NH-D15 G2 chromax.black strides straight into that conversation by taking the company’s latest-generation flagship and cloaking it in deep, uniform black. This is the long-awaited fusion of Noctua’s reference-class G2 engineering with a stealth aesthetic built for modern showcase rigs, promising serious thermal muscle and hushed acoustics without a hint of RGB.
The underlying proposition is simple to grasp yet difficult to execute: match or beat the thermal chops of many 360mm liquid coolers while staying resolutely on air, then wrap the whole thing in a homogeneous, premium black finish. That means a denser dual-tower heatsink, eight carefully routed heatpipes, and a pair of tuned 140mm fans that prioritise smooth acoustics over brute-force RPM.
Noctua NH-D15 G2 chromax.black
£139 / $189
Pros
- Outstanding cooling that rivals even some 360mm AIOs
- Exceptionally quiet, especially at mid fan speeds
- Six-year warranty
- Premium blacked-out finish and accessories
- Wide socket support and excellent mounting
- Includes NT-H2 paste, AM5 paste guard and Torx screwdriver
Cons
- Huge heatsink; RAM and case clearance must be checked
- Higher price than many rival air (and AIO) coolers
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How we test and review products.
It also means a package designed for the long haul, supporting current Intel and AMD mainstream sockets. You get a bundle that includes everything you need, right down to a thermal paste guard and a screwdriver. Such niceties don’t come for free, mind, as the £139 price of the Noctua NH-D15 G2 chromax.black is higher than that of practically all other air coolers, not to mention several AIOs.
Specification
| Specification | Details |
| Socket support | Intel LGA 1954, LGA1851, LGA1700, LGA1200, LGA115x; AMD AM4, AM5 |
| Heatsink dimensions | 168 x 150 x 152mm (w/fans) |
| Heatpipes | 8 x 6mm |
| Weight | 1,525g (w/fans) |
| Fan size and type | 2× NF-A14x25r G2 PWM chromax.black (140 x 150 x 25mm) |
| Fan speed range | 0-1500 RPM |
| Fan airflow | 91.5 CFM |
| Fan static pressure | 2.51mm H2O |
| Fan noise level | Max 24.8dBA |
| Warranty | 6 years |
| Price | £139.90 / $189.90 |
Unboxing
True to Noctua tradition, NH-D15 G2 chromax.black arrives in a sturdy, information-rich box that immediately positions it as a flagship piece of hardware.
Inside, thick cardboard inserts separate and secure the heatsink, fans, and accessory packs, ensuring the heavy dual-tower cooler is well protected in transit.
Alongside the black heatsink and two NF-A14x25r G2 PWM chromax.black fans, you’ll find separate labelled bags for Intel and AMD mounting hardware. This helps avoid confusion during setup.
Noctua includes its excellent NT-H2 thermal paste, an NA-TPG1 thermal paste guard for AM5, and an NA-CW1 cleaning wipe. There is also an NA-YC1 PWM splitter, two NA-RC16 low-noise adaptors, a Torx T20 screwdriver, and a metal case badge. This comprehensive bundle underscores that the cooler is designed for enthusiasts who expect a frictionless, premium experience from unboxing to final installation.
The overall presentation strikes a balance between a premium feel and practical organisation. Every component has its own place, and the documentation clearly walks through the platform specifics. It’s the sort of unboxing experience that reinforces the cooler’s high-end price tag while quietly hinting that nothing important has been overlooked.
Design
NH-D15 G2 chromax.black is a classic dual-tower heatsink re-imagined, with two dense fin stacks and eight heatpipes forming a structure that’s significantly beefier than the original NH-D15 dating right the way back to 2014. Noctua has tightened fin spacing and added around 20% more surface area. This allowed the cooler to better cope with modern high-core CPUs that sustain extreme power draw.
Everything you see is black, from the nickel-plated, high-conductivity-coated heatsink, to the fan clips, anti-vibration pads, and mounting hardware. All follow the chromax.black treatment for a unified stealth look. Despite the coating, contact surfaces are carefully tuned to match the thermal performance of the standard NH-D15 G2 while delivering a far more understated aesthetic. I’m not a fan of brown and beige, so this is right up my alley.
Twin NF-A14x25r G2 PWM fans, each 140mm with a 25mm-thick round frame, anchor the design and can be configured in single- or dual-fan setups depending on your RAM and case layout. The front fin stack is slightly shaved compared to the rear. This improves clearance towards memory slots while maintaining a balanced airflow path across both towers.
Features
Under the hood, the star changes that set G2 apart from its predecessor include the eight heatpipes and more densely packed fins that push Noctua’s internal NSPR rating to 228, signalling a new reference for air coolers in its class. The NF-A14x25r G2 fans themselves are next-generation designs, tuned specifically for heatsinks with a focus on high static pressure and smooth acoustics rather than raw RPM.
Fan speed ranges from 0 to 1500RPM with full PWM control, and it’s good to see Noctua continuing to support 0dB operation. This allows the fans to stop entirely at low load when configured appropriately in BIOS.
Fans
The bundled NF-A14x25r G2 PWM chromax.black fans are the same state-of-the-art units used on the standard NH-D15 G2, only dressed in black to match the stealth theme. Each fan uses a 140mm round frame and a finely tuned blade profile derived from Noctua’s A-series tech, designed to maintain pressure even through dense fin stacks.
Their 0–1500 RPM control range, combined with excellent motor and bearing refinement, allows them to ramp smoothly and avoid sudden tonal spikes during load changes. At the top end, they become clearly audible, but the sound’s character remains more of a well-behaved airflow rush than an intrusive mechanical whine. At maximum speed, these fans are rated for 91.5CFM and an acoustic profile of just 24.8dBA. In practice, it translates to a powerful yet carefully controlled whoosh rather than harsh noise.
Anti-vibration pads at the corners and robust frames help keep resonance in check. At the same time, the 4-pin PWM connector and supplied splitter make it easy to sync fan behaviour from a single motherboard header. Given their rated performance and acoustics, these fans are a key reason the NH-D15 G2 chromax.black competes credibly with large AIOs while staying purely on air.
Installation
SecuFirm2+ is the latest iteration of Noctua’s renowned mounting system, and on NH-D15 G2 chromax.black continues to impress with a blend of rigidity and ease of use.
AMD AM4 and AM5 users rely on the native backplate, which includes platform-specific bars and spacers.
Intel users with LGA1851, LGA1700, LGA1200, or LGA115x sockets receive a dedicated metal backplate and brackets.
The Torx-based screws and included T20 screwdriver ensure secure, repeatable mounting pressure without the risk of stripping heads, which is particularly welcome when working inside cramped cases. The hefty dual-tower design does however require forward planning, as RAM height and rear I/O shroud clearance must be checked in advance, especially if you intend to run both fans in their default positions.
In practice, the installation process is methodical rather than difficult: you first mount the backplate and brackets, then secure the heatsink using the crossbar, and finally clip the fans into place and connect them via the PWM splitter. Those familiar with earlier Noctua coolers will find the process very familiar, and the entire setup – from unboxing through to bundled accessories – exudes a layer of polish befitting the cooler’s flagship status.
Performance
I’m running benchmarks on both AMD and Intel platforms, to help provide a glimpse of real-world results irrespective of which CPU brand you prefer. Full specifications for both test systems are available below.
| AMD system | Intel system | |
|---|---|---|
| CPU | AMD Ryzen 9 9950X3D | Intel Core i9-13900K |
| Motherboard | Asus Crosshair X870E Hero | Asus ROG Strix Z690-E Gaming WiFi |
| RAM | 2×16GB G.Skill Trident Z5 Neo | 2×16GB Geil Gemini RGB TUF |
| Memory speed | 6,000MT/s CL28 | 6,000MT/s CL34 |
| GPU | Asus TUF Gaming GeForce RTX 3080 | Asus TUF Gaming GeForce RTX 3080 |
| Chassis | Thermaltake View 380 XL TG ARGB | Thermaltake View 380 XL TG ARGB |
| PSU | Endorfy Supremo FM6 1000W | Endorfy Supremo FM6 1000W |
Performance tests were conducted in Cinebench 2024 (MT) at three stages of noise output – 36dBA, 39dBA, 42dBA – as well as three RPM settings; 800, 1,200 and max.
My cooling system noise tests are conducted under standardised conditions in an air-conditioned room (22°C), ensuring high repeatability of results. Measurements were taken at a distance of 30 centimetres from the computer case, while the background noise did not exceed 30dBA. Sound pressure was measured using a Voltcraft SL-100 decibel meter.
AMD thermals
Pushed into quiet mode, the Noctua NH-D15 G2 chromax.black is better than the Deepcool Assassin 4 by 3°C and within 1.5°C of the 360mm AIO from Endorfy. A solid start.
You’d expect the temperature to decrease as noise (and fan speed) are increased. It is exactly what we see, though the differences between 36dBA and 39dBA are not striking. Still, it’s worth noting that at this setting, the Noctua comes even closer to the Endorfy AIO and keeps a 3°C difference versus the Deepcool Assassin 4.
Pushing noise up to the highest I like to see – 42dBA – the test cooler still runs 2.5°C lower than the air-cooling competition and pretty close to the 360mm AIO.
Intel thermals
13900K certainly runs hotter than 9950X3D. When forcing noise levels down to a minimum, it’s difficult to keep temperatures the right side of 90°C, irrespective of air or liquid cooling.
On a hot-running chip, the results are about as good as it gets for air cooling, and comparable to a 360mm liquid cooler.
Cranking fan speed up allows the liquid coolers to take a healthier lead, while the Noctua is the first air cooler to dip below 90°C in this test.
Noise
I can also turn the testing around to determine noise levels at a particular RPM. Looking at fan performance in more detail reveals Noctua’s blowers to be a cut above most others.
A couple of first-place finishes show that the supplied fans are the quietest I’ve tested, and by a decent margin. While the noise readings are impressive, it’s also worth pointing out that the overall experience is calmer; Noctua’s smooth fan ramp-up is among the best in the business.
Overall, there’s no denying the Noctua NH-D15 G2 chromax.black strikes a sweet spot between comfortable noise levels and actual CPU temperature.
Conclusion
NH-D15 G2 chromax.black is exactly what it sets out to be: a carefully evolved, fully blacked-out version of Noctua’s flagship air cooler that demands few, if any, real-world compromises. It delivers class-leading performance, a refined acoustic profile and an accessory bundle that makes it feel like a complete platform rather than just a heatsink.
Its sheer size and lack of RGB will slightly narrow the audience, and you absolutely need to confirm clearance in smaller or more compact cases. For builders who can accommodate its footprint and value silence and reliability over liquid loops and lighting, this cooler comfortably earns its place at the top of the air-cooling stack.
Add in a six-year warranty, long-term compatibility with mainstream Intel and AMD sockets and the understated elegance of the chromax.black finish, and you’re looking at a product that is built to outlast multiple builds. The main drawback is the price, as various 280/360mm AIOs cost less while offering better thermal performance if you’re willing to put up with additional noise from a pump and numerous fans.
Verdict: AIOs might be all the rage, but for users favouring an elite cooler that doesn’t carry risk of pump failure or leakage, the NH-D15 G2 chromax.black is hard to overlook. It is the pinnacle of air cooling in 2026.
