Our Top Picks
The best Noctua CPU cooler for most builders is a tower such as the NH-U12A or the dual-tower NH-D15 family, with the NH-U9S or NH-L9x65 reserved for small cases and the NL-LC1-36 for anyone who wants a 360mm radiator. All ten listings are Noctua-branded, so the real choice is physical: height, fan size and mounting. Prices and availability change often, so use this list as a clearance and format guide and confirm socket support on each page. For wider context, our CPU cooler roundup covers other brands.
Short list by build type
Noctua NH-D15 chromax.Black, Quiet High-Performance Dual Tower CPU Cooler | 168mm Height, Enthusiast-Grade Low-Noise Cooling, 6 Heatpipes, For Intel & AMD, Dual 140mm Fans, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-D15 G2 chromax.Black, Quiet High-Performance CPU Cooler
One of the home product options compared in this guide.
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Noctua NH-U9S, Quiet High-Performance Single Tower CPU Cooler | Compact 125mm Height, ITX SFF Low-Noise Cooling, For Intel & AMD, 92mm Fan, 100% RAM Compatibility, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-U12A chromax.Black, Quiet High-Performance Tower CPU Cooler | 158mm Height, High-End Low-Noise Cooling, For Intel & AMD, Dual 120mm Fans, 100% RAM Compatibility, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NL-LC1-36, High-Performance 360mm AIO CPU Cooler | Industry-Leading Quiet Cooling, 30mm Slim Radiator, Pump Noise Absorber, for Intel & AMD, 3x 120mm Fans, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-D15 G2, Quiet High-Performance Dual Tower CPU Cooler | 168mm Height, Ultimate Low-Noise Cooling, 8 Heatpipes, For Intel & AMD, Dual Enthusiast-Grade 140mm Fans, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-U12S Redux, Quiet High-Performance Single Tower CPU Cooler | 158mm Height, Low-Noise Cooling, 5 Heatpipes, For Intel & AMD, 120mm Fan, 100% RAM Compatibility
One of the home product options compared in this guide.
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Noctua NH-U12A, Quiet High-Performance Single Tower CPU Cooler | 158mm Height, High-End Low-Noise Cooling, For Intel & AMD, Dual 120mm Fans, 100% RAM Compatibility, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-D15S chromax.Black, Quiet High-Performance CPU Cooler | 160mm Height, Low-Noise Cooling, 6 Heatpipes, For Intel & AMD, 140mm Fan, High RAM Compatibility, Rich Accessory Kit
One of the home product options compared in this guide.
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Noctua NH-L9x65, Quiet High-Performance Low-Profile CPU Cooler | 65mm Height, ITX SFF Low-Noise Cooling, For Intel and AMD, 92mm Slim Fan, No RAM or PCIe Overhang, Rich Accessory Kit
One of the home product options compared in this guide.
View on Amazon- Tall air cooler, standard case: NH-D15 or NH-D15 G2 (168mm per title)
- Tower with easier RAM clearance: NH-D15S (160mm) or NH-U12A (158mm)
- Small-form-factor builds: NH-U9S (125mm) and NH-L9x65 (65mm)
- Budget single tower: NH-U12S Redux (158mm)
- Radiator route: NL-LC1-36, 360mm AIO
All ten side by side
| Model | Key point from title | Best for |
|---|---|---|
| NH-D15 chromax.Black | Dual tower, 168mm, 6 heatpipes, dual 140mm fans | Large cases, black builds |
| NH-D15 G2 chromax.Black | Short title; “Quiet High-Performance CPU Cooler” | Black builds (verify specs on page) |
| NH-U9S | Single tower, 125mm, 92mm fan, 100% RAM compatibility | Compact builds |
| NH-U12A chromax.Black | 158mm, dual 120mm fans, 100% RAM compatibility | Mid-height towers, black look |
| NL-LC1-36 | 360mm AIO, 30mm slim radiator, 3x 120mm fans | Radiator builds |
| NH-D15 G2 | Dual tower, 168mm, 8 heatpipes, dual 140mm fans | Maximum air-cooling mass |
| NH-U12S Redux | 158mm, 5 heatpipes, 120mm fan, 100% RAM compatibility | Simple single tower |
| NH-U12A | Single tower, 158mm, dual 120mm fans, 100% RAM compatibility | Balanced size and fans |
| NH-D15S chromax.Black | 160mm, 6 heatpipes, 140mm fan, high RAM compatibility | Cases with a 160mm limit |
| NH-L9x65 | Low profile, 65mm, 92mm slim fan, no RAM or PCIe overhang | ITX and low-profile cases |
The ten listings
Noctua NH-D15 chromax.Black
The title lists a dual-tower design, 168mm tall, with 6 heatpipes, two 140mm fans and a rich accessory kit, for Intel and AMD. Its all-black finish is in the model name. At 168mm, it is a tall cooler, so measure your case clearance and check whether the front tower blocks RAM slots on your board. The title promises low-noise, enthusiast-grade cooling but gives no figures. If you already own a mid-tower with a narrow window for the cooler, confirm the real internal width in the case manual rather than relying on the headline height alone.
- Pros: Dual 140mm fans; established dual-tower format
- Cons: 168mm height; may crowd RAM or the first PCIe slot
Who it’s for: Full-size cases and black-themed builds.
Noctua NH-D15 G2 chromax.Black
This listing is very short: “Quiet High-Performance CPU Cooler” with no height, heatpipe count or fan details in the title. It shares the G2 name with the other NH-D15 G2 listing, which states 168mm and 8 heatpipes, but that is not enough to assume identical specs. Open the product page for dimensions, fan details and the socket list before comparing it with anything else here. Because the listing is sparse, treat any claim about this variant as unconfirmed until the page lists height, fans and compatible sockets.
- Pros: Black variant of a newer-generation name
- Cons: Title omits nearly every spec; verify on the page
Who it’s for: Black-build buyers willing to read the listing details.
Noctua NH-D15 G2
The standard version states a dual-tower layout, 168mm height, 8 heatpipes and two enthusiast-grade 140mm fans, with a rich accessory kit. The 8-heatpipe count differs from the older NH-D15’s listed 6, though the title does not say what that means in practice. It is one of the two tallest air options on the list, so check the manual for case clearance and RAM height first. Buyers comparing it with the chromax.Black version should check that both pages give the same figures before assuming the only difference is color.
- Pros: More heatpipes listed than the older NH-D15
- Cons: 168mm; likely the largest air cooler in this guide
Who it’s for: Large cases where space is not a limit.
Noctua NH-U12A
A single-tower cooler listed at 158mm with dual 120mm fans, 100% RAM compatibility and a rich accessory kit, for Intel and AMD. The two-fan single-tower layout is its distinguishing feature. At 158mm, it fits cases that reject the 168mm dual towers, though you should still check your case’s stated limit. See also our 9800X3D cooler guide if you are matching it to that CPU. The title also notes 100% RAM compatibility, which is helpful when you are using taller memory modules.
- Pros: Shorter than the NH-D15 family; full RAM compatibility claimed
- Cons: Fan count means two fans to mount and cable
Who it’s for: Mid-size cases that cannot take the dual towers.
Noctua NH-U12A chromax.Black
The same model concept in a black version, with the title stating 158mm height, dual 120mm fans and 100% RAM compatibility. The chromax.Black label is the main difference from the standard NH-U12A, though this title says “Tower” while the other says “Single Tower,” so confirm the listing details. Choose it only if the black finish matters to your build. If you are undecided between the two NH-U12A listings, compare the product pages side by side for contents, not only finish.
- Pros: Same size as the standard model; black look
- Cons: Price and finish differ from the standard listing; read both pages
Who it’s for: Black mid-tower builds.
Noctua NH-D15S chromax.Black
A 160mm cooler with 6 heatpipes and a single 140mm fan, noted for high RAM compatibility. The title states high RAM compatibility, which is the reason to look at it over the D15 if tall memory is a concern. It is 8mm shorter than the NH-D15, which can decide whether a 160mm case limit works. It is the middle option between the 168mm dual towers and the 158mm single towers, so it is worth a look when a case limit sits in that gap.
- Pros: High RAM compatibility stated; 160mm height
- Cons: One 140mm fan listed; “high” is not “100%”
Who it’s for: Builds with tall memory modules.
Noctua NH-U12S Redux
The lowest-key tower in the group: a single tower at 158mm with 5 heatpipes, one 120mm fan and 100% RAM compatibility. The title does not list an accessory kit as the others do, so check what is in the box. It is the straightforward option when you do not need extra fans. It is also the closest like-for-like swap for a stock cooler in a standard mid-tower, as long as the case clears 158mm.
- Pros: Simple single-fan tower; full RAM compatibility claimed
- Cons: No accessory kit mentioned in the title
Who it’s for: Straightforward mid-range builds.
Noctua NH-U9S
A compact single tower at 125mm with a 92mm fan and 100% RAM compatibility, listed for ITX and small-form-factor builds. A 92mm fan is smaller than the 120mm and 140mm fans elsewhere in this list, so confirm the cooler suits your CPU before ordering. Its main appeal is fit: it clears memory and sits in cases that reject larger towers. It is a sensible step up from a stock cooler in a compact case, provided the case lists at least 125mm of cooler clearance.
- Pros: 125mm height; full RAM compatibility claimed
- Cons: 92mm fan; title gives no cooling capacity
Who it’s for: Compact cases that need a tower, not a low-profile.
Noctua NH-L9x65
A low-profile cooler at 65mm with a 92mm slim fan, listed as having no RAM or PCIe overhang. It targets ITX and SFF cases where even the NH-U9S is too tall. A short cooler can only move so much heat, so check your CPU’s heat output before choosing it. With a 65mm height, it is the shortest listing here by a wide margin, which is why it is the cooler for cases where every millimeter counts.
- Pros: Only 65mm; no RAM or PCIe overhang
- Cons: Smaller cooling surface; not for hot CPUs
Who it’s for: Low-profile and HTPC-style cases.
Noctua NL-LC1-36 360mm AIO
The only liquid option: a 360mm AIO with a 30mm slim radiator, a pump noise absorber and three 120mm fans, for Intel and AMD. The listing promises industry-leading quiet cooling, which we cannot verify. It needs a case with 360mm radiator support, and the 30mm radiator thickness matters for clearance. Check hose length and compatibility on the page. If your case only supports 240mm radiators, this listing is not an option, however attractive its specifications look.
- Pros: Three 120mm fans; slim 30mm radiator
- Cons: Requires 360mm radiator mounting; pump adds a failure point
Who it’s for: Builders who prefer a radiator and have the case space.
How we picked these
This guide uses published specifications, manufacturer documentation and buyer reviews, read as of October 2026. Nobody on the team used or measured these units. We kept only what each title says, noted where two listings share a model name with different details, and did not rank noise or temperatures because the titles give no figures, and we did not infer cooling capacity from fan or heatpipe counts alone. Confirm sockets and dimensions on the live product page.
What to check before you buy a Noctua cooler
Dual tower, single tower, low profile or AIO
Dual towers (NH-D15 family) offer the most air-cooling mass but the least clearance. Single towers (NH-U12A, NH-U12S Redux, NH-U9S) trade mass for space. Low-profile (NH-L9x65) suits tiny cases. The AIO moves the heat to a radiator. Pick the format your case can physically hold first, then pick the model inside that format; reversing the order is how builders end up returning coolers.
Clearance worked example
Suppose a case lists 161mm of CPU cooler clearance. The NH-D15 and NH-D15 G2 at 168mm are out. The NH-D15S at 160mm fits with 1mm to spare, and the 158mm towers leave 3mm. Always add margin for side panel flex, and confirm with the case manual.
Fans and noise
Fan count and size are the clearest differences between the listings: dual 140mm on the D15 family, dual 120mm on the U12A, one 140mm on the D15S, one 120mm on the U12S Redux, 92mm on the small models and three 120mm on the AIO. The titles promise low noise but give no figures, so rely on manufacturer noise specifications instead of guessing.
RAM and PCIe
The titles mention 100% RAM compatibility for the U-series towers and high compatibility for the D15S. The dual towers do not say. The first PCIe slot may be blocked by a tall front tower, so check the board layout if you plan to fit a graphics card or capture card in that slot. Low-profile cases add a second constraint, since even a short cooler can foul a tall memory kit.
Weight and mounting care
Large coolers are heavy and sit on a motherboard that flexes. Install them with the system powered off and unplugged, support the board while tightening, and follow the manufacturer’s instructions for the mounting kit. In a case you will move often, check whether the manual advises removing the cooler first.
Sockets and mounting
Titles say “for Intel & AMD,” but newer sockets can require specific mounting parts. Check the listing for your CPU socket and what is included. Keep the box and manual until the build works, because replacement mounting hardware can take time to order.
Mistakes buyers make
Choosing on brand alone without measuring the case; assuming an S-series or Redux is “worse” without reading the specs; buying chromax.Black for performance instead of looks; forgetting the radiator mount for the AIO; and ignoring the vague NH-D15 G2 chromax.Black title. Also, do not stack a tall cooler onto tall memory without checking the stated RAM clearance. Another is ordering before checking the case’s maximum cooler height in the manual. And do not assume two listings with the same model name are identical: the NH-D15 G2 pages differ in how much detail they give.
Verdict
For most mid-size cases, start with the NH-U12A. Move to the NH-D15 or NH-D15 G2 only when you have clearance to spare, and to the NH-D15S if memory height is the constraint. Use the NH-U9S or NH-L9x65 for small cases and the NL-LC1-36 only if the case supports a 360mm radiator. Browse our main CPU cooler guide for non-Noctua options, and always re-check the live listing for current availability and compatibility.
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Frequently asked questions
Which Noctua cooler is the quietest?
The listings describe all of them as low-noise, but none gives a decibel figure in its title, so a ranking would be guesswork. As general reasoning, a larger fan can turn slower for the same airflow, which is why the dual 140mm designs and the 360mm AIO are the likeliest to run quietly. Compare manufacturer noise specifications on each page before deciding.
Will the NH-D15 or NH-D15 G2 fit my case?
Both are listed at 168mm tall, and the NH-D15S is 160mm, so compare those numbers with your case’s stated CPU cooler clearance, not just its width. Leave a few millimeters of margin and check RAM clearance in the manual. If the case limit is under 168mm, look at the NH-D15S, the 158mm NH-U12A or a shorter model instead.
What is the difference between the standard and chromax.Black versions?
The titles use chromax.Black as a variant label, which points to a black-finish version of the same model. The titles do not spell out any other change, so read each product page for differences in contents or specifications. Choose chromax.Black only if you want the all-black look, and compare both pages before assuming the contents are the same.
Are Noctua coolers compatible with both Intel and AMD?
Most titles say they are for both Intel and AMD, and the NL-LC1-36 and NH-L9x65 titles say the same. That is a broad statement, so check the exact socket on the product page before buying, since newer sockets sometimes need a specific mounting kit. Also confirm that the cooler’s included hardware matches your motherboard.
Should I choose an air cooler or the AIO?
Air coolers have fewer parts that can fail, since there is no pump or liquid loop. The 360mm Noctua NL-LC1-36 trades that simplicity for a radiator that moves heat away from the CPU and into the case. It needs a 360mm radiator mount and enough room for three 120mm fans, so check your case support before ordering.
