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Continuing the renowned legacy of Noctua’s NH-U9 series, the NH-U9S is a premium quality quiet CPU cooler in classic 9cm size. Its asymmetrical design with 5 heatpipes not only provides even better cooling performance than the previous generation but also improves compatibility: Thanks to its 95x95mm footprint, the NH-U9S clears the RAM and PCIe slots on all Intel and most AMD based mainboards, including µATX and ITX. Combined with its 125mm height, this makes the NH-U9S a highly versatile solution with excellent case, RAM and PCIe compatibility. The included NF-A9 premium fan supports automatic speed control via PWM for outstanding quietness of operation and a second, optional NF-A9 fan can be added for further improved performance in dual fan mode. Topped off with the trusted, pro-grade SecuFirm2 multi-socket mounting system and Noctua’s proven NT-H1 thermal compound, the NH-U9S is a deluxe choice through and through.
S version with better compatibility
Like its bigger brothers NH-U12S and NH-U14S, the NH-U9S features a revised, slimmer layout: Whereas the NH-U9B SE2 was 120mm deep with its two stock fans, the NH-U9S is asymmetrically built and measures only 95mm with its single, more efficient NF-A9 fan, thus providing better performance and compatibility at the same time.
100% RAM compatibility
With its 95x95mm footprint, the NH-U9S does not overhang the RAM slots on current Intel and most AMD mainboards. This gives the user full access to the memory modules and ensures 100% compatibility with tall heatspreaders or optional memory fans.
100% compatibility with PCIe cards on mini-ITX
Many Intel LGA115x based mini-ITX mainboards have the PCIe slot sitting right next to the 95x95mm socket zone. While larger coolers that exceed this zone are likely to block the PCIe slot, the 95x95xmm sized NH-U9S provides full compatibility with PCIe cards, be it on ATX, microATX or ITX.
NT-H1 thermal compound
Noctua’s much-acclaimed NT-H1 is a pro-grade TIM solution that provides minimum thermal resistance, excellent ease of use and outstanding reliability. Chosen again and again by overclockers and enthusiast users worldwide, it has established itself as a benchmark for premium-quality thermal compounds.
Measurements
- Height (without fan): 125 mm
- Width (without fan): 95 mm
- Depth (without fan): 68 mm
- Height (with fan): 125 mm
- Width (with fan): 95 mm
- Depth (with fan): 95 mm
- Weight (without fan): 524 g
- Weight (with fan/s): 618 g
Materials
Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Cooler Specification
Scope of delivery
- NF-A9 PWM premium fan
- NA-RC7 Low-Noise Adaptor (L.N.A)
- NT-H1 high-grade thermal compound
- SecuFirm2 mounting kit
- Fan-clips for second NF-A9
- Noctua Metal Case-Badge
Fan compatibility
92x92x25 mm
NF-A9 premium fan
The highly optimised NF-A9 features Noctua's proprietary AAO frame as well as sophisticated aerodynamic design measures such as Flow Acceleration Channels, which allows it to further improve the efficiency of Noctua's previous 92mm models and contributes to the NH-U9S' superior cooling performance.
PingJockey
2025-08-25 17:46:19
I don't want my PC case to be a disco nightclub like all these new coolers offer, it's a waste of power and distracting. This cooler fit well and was easy to install, it even includes thermal paste. So far it's quiet and cools my Ryzen well.
Von
2025-08-05 16:59:16
I usually wait a while before coming back to review a product, to see how things work out over time. This time I'll make an exception ...I have a i3 Skylake build for my home office. My CPU monitor was consistently pinging me that my temps were going over 80c under normal use...under idle, it usually hovered around 50 to 60. The case was free of dust and temps in the room were always not nearly hot enough to explain it.Opened my case up yesterday to install a new vid card and decided to also get rid of the original Intel fan and get a better solution. I searched Amazon and this option popped up on top of the list. The reviews and feedback were so good I only scanned a few other options before coming back to this one and pulling the trigger. Same day delivery was an added bonus!Installation is a bit of a project, but nothing anybody with a bit of experience with this kind of thing can't handle. On most mobos you will need to remove the whole board to get the included mounting bracket on the back. As a bonus its nice they include a (necessary) long screwdriver for the main mounting screws, and some quality thermal paste. The entire kit is very solid, quality materials.I mounted mine so the fan directly faces the rear fan in my case. That way the cooling fan pulls air through the block across the CPU, and the rear fan sucks it out the back of the case. Super quiet I hardly know its even on.I recommend searching YouTube for tutorials, I found a couple of guys that walked through the details of how they got it installed with minimal hassle and no errors. Always a huge help and makes it go that much smoother.Immediately after installation I booted up and checked the CPU monitor. CPU temp now hovers under 30c (27 / 29) at idle. In fact, with about 10 Brave tabs open and normal clicking around / typing, its *still* right there at the same temp. Does not even rise at all! Running 3 YouTube videos in separate tabs ... still does not even budge.I haven't tried any rendering or anything that seriously taxes the CPU yet but for normal every day use this thing is doing its job like a champ! Can't speak to long term use but based on all the positive reviews I'm confident its most likely going to continue to do so!
Joshua
2025-07-04 15:49:02
Does the job, plus you get a cool enamel sticker. Ive used their fans before and was very happy with those purchases and got this because of that. I don't need crazy RGB just a good cooler. Had to modify the mount for my build but still works perfectly. Also it is very very quiet.
Aviator
2025-06-30 10:59:25
I recently did a "hand-me-down" "upgrade" on my Media center PC putting in a 9th gen I5 and a GTX750. Previously it was cooled with a AIO but you could hear the pump noise. I put it together at first using a stock intel cooler. Which was loud. As it doesn't need a lot of graphics power it has a old GTX750 in it. It is well below the minimum specs of flight simulator 2020 but I loaded it as a test. Using the stock cooler the CPU was hitting 100c and it would never load. With this cooler it stayed around 50c and actually loaded and played it fully stable for a few hours (some just letting it run on autopilot) Honestly impressed in the performance for such a small quite cooler. With 2 120mm Noctua case fans and everything in the quietest fan profiles it is nearly silent under nominal loads which was my goal. Using zcpu load test the temps stayed low.
D. Jackson
2025-01-18 15:05:57
Even though I've built systems for several years, this was my very first non-stock-cooler install. I usually go with Intel's stock cooling solutions, which typically work fine for non-overclocked purposes. Since the i5-9600k doesn't come with a cooler, I decided to venture outside of my comfort zone and go for a third-party cooler.After reading many reviews, I decided on this Noctua solution. The primary factors that drove my decision:1) Air cooler.2) Single fan.3) Small profile, so I wouldn't have to worry about overhang/selecting specific components.4) Quiet. Be very, very, quiet.5) Excellent build quality and compatibility, so it might last between several system upgrades.I just finished installing it earlier today, and so far the results have been fantastic. On my old CPU (i5-4440), with the stock cooler, my low-stress temps (web-browsing, music playing) were about 65C. With this new cooler on my new i5-9600k, I'm seeing about 38C on average under a similar load. That's in a fairly warm room, with a hot case (Antec Sonata III - I'm going for a quiet, subdued system.) Also, it is even quieter than my old system! I can't tell that the computer is even on (in terms of noise level) unless I turn the ceiling fan off, which is what I was going for - near silence.NEWBIE MISTAKES TO AVOID:I did all of the silly things I'm about to list - if this is your first time installing a more complicated cooling solution, hopefully this will help! If you're an experienced system builder, then here's hoping you have a good chuckle.1) Hey, look at this nice full-glossy instruction sheet! Guess what you should do before step 3 - you should make sure the CPU is LOCKED IN. I still had it unlocked after dropping in the new CPU, and had all sorts of trouble.2) Step 4 - yay, time to apply the thermal paste! Only.. how do I get it out of the tube? The old paper-clip to the cap trick, right? NO - that cap unscrews with moderate force. Don't punch a hole through it!3) Step 5 - Man, tightening that one screw down with a regular screwdriver is a real pain in the patoot. They should have included a specialized screwdriver to help with this. Guess what, they did! I mentally discarded it after mistakenly thinking it was a piece for AMD CPU installation when I first opened the box. In fact, that odd piece of metal *was* a screwdriver. Oops!Overall, my first adventure into non-stock CPU cooling has been refreshing and rewarding. This Noctua kit seems well made, the packaging was great, and so far it's working like a champ, despite the mild levels of accidental abuse I dispensed during the installation process. I'll be looking at Noctua in the future if I need any more cooling for my rig.
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