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Noctua NH-L12S, 120mm Silent Fan Low Profile CPU Heatsink (Brown)

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$64.90

$ 24 .99 $24.99

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About this item

  • Compact, low-profile, top quality CPU heatsink (70mm overall height)
  • Improved successor to the award-winning NH-L12, suitable for ITX and HTPC systems
  • Optimized NF-A12x15 120mm fan with PWM support and noise reduction adapter for speed control and very quiet operation
  • Includes award-winning NT-H1 thermal compound and SecuFirm2 multi-socket mounting system, easy to install and compatible with Intel LGA115x, LGA2011, LGA2066 and AMD AM2(+), AM3(+), AM4, FM1, FM2(+)



Product Description

NH-L12S Header

Successor to the popular NH-L12, the NH-L12S is a compact low-profile CPU cooler that combines excellent compatibility, surprising efficiency and remarkable flexibility. Thanks to its NF-A12x15 PWM, slim 120mm fan, the NH-L12S provides even better quiet cooling performance than the previous model with its 92mm fan. At the same time, the NH-L12S is highly versatile: with the fan installed on top of the fins, the cooler is compatible with RAM modules of up to 48mm in height. With the fan installed underneath the fins, the total height of the cooler is only 70mm, making it suitable for use in many HTPC and Small Form Factor cases. Topped off with the trusted, pro-grade SecuFirm2 multi-socket mounting system and Noctua’s proven NT-H1 thermal compound, the NH-L12S is a premium-quality low-profile solution for the highest demands.

NH-L12S

Low-profile mode

Run with the NF-A12x15 fan installed underneath the fin stack, the NH-L12S stands only 70mm tall. The fan can be installed blowing upwards or blowing downwards in order to match the airflow direction inside the case.

NH-L12S High Clearance

High-clearance mode

Run with the NF-A12x15 fan installed on top, the NH-L12S provides extended clearance underneath the fin stack. This way, it is fully compatible with chipset coolers and RAM modules with heat-spreaders of up to 48mm in height (vs. 35mm in low-profile mode).

NF-A9x14

NF-A12x15 slim 120mm premium fan

Featuring sophisticated aerodynamic optimisations such as Flow Acceleration Channels, the NF-A12x15 is a premium-grade slim 120mm fan. Its outstanding efficiency allows the NH-L12S to provide even better performance than the previous model with its 92mm fan.

NT-H1

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.

NH-L12S
Measurements
  • Height (without fan): 70 mm
  • Width (without fan): 128 mm
  • Depth (without fan): 146 mm
  • Height (with fan): 70 / 88 mm
  • Width (with fan): 128 mm
  • Depth (with fan): 146 mm
  • Weight (without fan): 390 g
  • Weight (with fan): 520 g
Material

Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating

Cooler Specifications

Scope of delivery

  • NF-A12x15 PWM premium fan
  • NA-RC7 Low-Noise Adaptor (L.N.A)
  • NT-H1 high-grade thermal compound
  • SecuFirm2 mounting kit
  • Noctua metal case-badge
Fan compatibility

120x120x15, 120x120x25

NH-L12S Banner

Please Note:

The NH-L12S is a highly compact, quiet low-profile cooler designed for use in small form factor cases and HTPC environments. While it provides first-rate performance in its class, it is not suitable for overclocking and or CPUs that create high heat loads.


Jason
2025-08-10 15:53:43
I picked up this cooler to replace an H80i v2 which failed on me after just a few months in my ITX 9700K Solidworks PC build. I figured I'd go back to old reliable air cooling since it seems like other folks have had similar issues with that particular AIO.First of all, the packaging design for this cooler deserves an award. I've bought Noctua fans before, but this was my first CPU cooler from them - all the packaging (aside from a couple plastic bags for mounting hardware) is beautifully folded cardboard that snugly keeps everything in its proper place. It would have been easy for Noctua to just make a few styrofoam molds to hold this thing, but they took the time to come up with this lovely origami-esque solution that is functional and environmentally friendly. Nice job guys!All of the hardware is great quality - mostly metal aside from a couple plastic spacers. The fan comes pre-installed in the most compact configuration (you can put it on top for better performance, but it might not fit in many ITX builds) and there are several instruction booklets (again, nice quality, for the different chipsets. Compared to other air coolers I've used, the mounting for this is a breeze - the LGA115X backplate has the feed-through standoffs press-fit so you just sort of pop it through the back and the rest of the installation is quite straightforward. If you're using this for AMD or a less common Intel chipset, the installation is a little more involved but probably not too bad. Additionally, there is a little metal Noctua decal "sticker" included which is the nicest logo swag I've ever gotten with a PC component (and I have built some very high end PCs!).The build is in a Silverstone SG13 case with a Silverstone SFX PSU. The CPU is an Intel 9700K running at stock settings with 2 sticks of 16GB Crucial 2666 spreaderless RAM. There is about 3/16" clearance between the top of this cooler and the PSU (PSU is flipped such that the intake fan is directly over the CPU heatsink) and about 1/8" between the CPU fan and the RAM. I put an additional Noctua 120mm fan on the front of the case for additional airflow.As far as cooling performance goes, I was very pleasantly surprised. Keep in mind, this is not a gaming build. This is a Solidworks PC that I use for moderate CAD work (about 1500 parts in my most complex assembly). Probably most importantly, when under typical loads, there is not a big, power-hungry GPU dumping a bunch of heat into my little ITX box - there is a tiny little P400 workstation card which is mostly there to provide multi-monitor support. That said, at an ambient temperature of nearly 90F (in my top floor California apartment with no AC) I was able to run the Solidworks benchmark as well as mess around with my largest assembly without every seeing a core temperature go above 70C. All the while, core clocks never dropped below 4700MHz. When I threw Prime95 at it, The core clocks evened out to around 4400MHz (130W power draw according to Core Temp) and temperatures hovered in the low 70's with the max I ever saw at 76C. Again, this is in a stuffy 90F ambient apartment.I can't provide measurements for noise levels, but I will say that, under moderate loading with all BIOS fan settings set to "Standard" this cooler cools my 9700K almost silently. Yes, when Prime95 is running and all 8 cores are under 100% load, it gets a bit louder, but not nearly as loud as some blower GPUs I've heard in gaming builds. In an office setting where the ambient temperature will be almost 10C below what I was testing at, I would never worry about my CPU overheating or the fans blowing so loudly that they bother my neighbors.This product receives my wholehearted recommendation - great job Noctua!
Miguel Martorell
2025-08-05 14:04:17
Replaced the watercooler from NZXT H1 fan and replaced it with this. Temperatures have been cooler than ever, even cooler than when the PC was new with it's watercooler. Works great. Barely any noise.
Levenly
2025-07-12 17:50:40
I had the Noctua NH-L9x65 from a previous build, and while it technically worked, it wasn't great at cooling this chip for me in the SSUPD Meshalicious case. *To preface, I have a FTW3 3080, two NF-S12A as exhaust in the front, and the R7 5700x with PBO curve at -22 with a temp limit of 80C and +100mhz. On the L9x65 heatsink, I had limited the PPT, TDC and EDC to 55W, 45A and 65A respectively. Also, I spent a good chunk of time overclocking and undervolting the 3080, so it rarely hits over 55C in bench / gaming, so there isn't significant heat surrounding my case.* In gaming on valorant, OW2 and BF2042, I would hit ~75C and close in on 80C during longer sessions, while also hitting 75C-80C during OCCT tests/benchmarks. Note, idle temps were usually around 55C with light workloads (web browsing, etc) in the mid 60s. Without limiting PPT, I would just bounce off the thermal limits and I'm guessing the CPU would throttle (I'm coming from an i5-8400, so at 1440p and 144hz, the R7 5700x is keeping up just fine and my 1% lows are still high so I don't notice throttling). The only reason I ended up upgrading to this heatsink is because my curious self took the side mesh panel off while the thing was running because I wanted to see how much heat I could feel being pulled from the heatsink and a clamp from the panel hit the fan while it was running and broke off a fan blade, causing it to be imbalanced and eventually stop the fan from running. Instead of just buying another 95mm fan, I opted to go for this heatsink.After installing the NH-L12s, my idle temps dropped significantly, with my current low at 32C and current max at 64C (OCCT tests for 1 hour). This is with PPT, TDC and EDC back to their default settings and the boost bumped to 150mhz (HW monitor registered 77.8W from the CPU as a max, so I know Ryzen is back to doing it's thing where it's pulling more power than advertised. As I'm writing this, my CPU is registering 39C, so this has greatly reduced my temps. Gaming puts it up to 55C, so there's been an incredible drop overall and has allowed me to at least not limit power to the chip via PPT, etc, in order to drop temps. I have cores hitting 4982mhz with the slowest core peaking at 4749mhz,I know people say do not overclock with this, and while I agree you shouldn't use this heatsink to go for records, for the R7 5700x as a 65W chip, this can do wonders and I'm absolutely positive you could put on a nice overclock with a sensible undervolt and have great temps. this series for whatever reason likes to actually hit the thermal limits, so given that i'm not really going higher than 65C at default settings (minus the curve UV), there's definitely a solid amount of headroom for OC - AMD puts the thermal limit at 30C above my peak right now so I have ample headroom. Additionally, given that the 120mm fan can spin slower than the 95mm fan (2500rpms vs 1800rpms i think) while pushing more air, the noise has reduced considerably.bottom line, if you're air cooling a mini itx setup, specifically the SSUPD meshalicious and you can fit this with the fan in the low profile position, i'd 100% go for it.
非公式 カスタマー
2025-07-03 14:38:49
・NZXT H1(1世代)・3700xで使用している。純正の簡易水冷はポンプが逝ったのか、温度が下がらなくなったので安心安全の空冷に変更。ファン1個で冷やせるか不安だったので。外側カバー140㎜ファン(別売り)本体付属ファンマザーボードの順で配置している。3700xなら問題なく、非常に静かに運用できている。薄型トップフローでこれ以上良い製品はないと思う。
Fabio Zerbetto
2025-06-29 09:05:47
Prodotto veramente valido, adatto per case di dimensioni medie e piccole. Il rumore della ventola non si sente nemmeno a regime massimo di funzionamento. Le temperature sono ben controllate, montato sul nuovo socket 1200 per un i7-10700K, raggiunge una temperatura massima che fluttua i 70 e gli 80 gradi mantenendo il clock dinamico del turbo boost technology.Utilizzando il processore al massimo del boost fisso a 5.1GHz, le temperature salgono oltre i 90°, in tal caso è meglio montare il modello NH-U12A o NH-U12S che sono piu' performanti.Il montaggio è semplice, ma serve un po' di manualità. La parte più complessa è il fissaggio del radiatore ai supporti, ci vuole un po' di pazienza per centrare e fissare le viti di entrambi i lati.
Vicky
2025-06-11 17:19:36
i bought this for my father and he was happy about that
alfreer
2025-01-06 13:31:52
Background:I needed to resurrect and cool an old AMD FX 8350 (No laughing) 125watt 8 core processor in a small case under my TV with poor airflow. M-atx board too.I needed a low height and upward firing of the heat. This fitted the bill, not the cheapest option though.Fitting:It will fit am3, am4, fm2 and most recent Intel sockets. All mounts provided and easy instructions.Fitting was a case of finding which direction to place it. One direction the heat pipes caught the 1st ram module.Turning 90 degrees solved that. (Different mounting brackets depending on which way round you place it).It mounts on the backplate you already have for your motherboard (AMD).With the fan under the heatsink, firing upward, it clears my Hyper Fury X by 2mm! Anyone with larger ram with bigger heatsinks will probably need the fan above firing down.It runs silently, literally and I haven't got the chip over 50 degrees with stress tests!!The chip runs at 4ghz, I did overclock briefly to 4.2ghz and it stayed at 50 degrees and still quiet.My tips:I didn't use the Stepdown cable, I just let the board control it.It comes with Noctua paste which I used as it appears to be better than my mx-4 by what I read.I found a long screwdriver was better than the one provided.I also turned off the low fan warning in bios as it turned too slowly on startup making my pc think it wasn't working.Summary:I'm converted! Better than expected, cooler, quieter. Quality.
Manuel
2024-12-09 14:37:37
Silencioso, fácil de montar, presentación impecable, calidad genial y funcionamiento perfecto. Y con el ventilador en el interior (como viene de fábrica), es hasta bonito. Montado en un 3700x sin problema alguno.
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