






Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.
💨 Silence Meets Power: Cool Your Rig Without the Noise!
The be quiet! Silent Wings Pro 4 140mm PWM fan combines cutting-edge blade design and a 6-pole motor to deliver up to 97.4 CFM airflow at a whisper-quiet 36.8 dB noise level. With a max speed of 2400 RPM and a funnel-shaped air outlet for high static pressure, it’s engineered for premium cooling performance on radiators and heat sinks. Ideal for professionals and enthusiasts seeking powerful, silent cooling with dynamic speed control and long-lasting reliability.







| ASIN | B0B74CP6X2 |
| Air Flow Capacity | 97.4 Cubic Feet Per Minute |
| Best Sellers Rank | #23 in Computer Case Fans |
| Brand | be quiet! |
| Brand Name | be quiet! |
| Compatible Devices | Radiator |
| Cooling Method | Fan |
| Customer Reviews | 4.7 out of 5 stars 2,604 Reviews |
| Global Trade Identification Number | 04260052188910 |
| Item Dimensions L x W x H | 5.51"L x 0.98"W x 5.51"H |
| Item Weight | 310 Grams |
| Manufacturer | be quiet! |
| Material Type | Copper |
| Maximum Rotational Speed | 2400 RPM |
| Model | BL099 |
| Noise Level | 36.8 Decibels |
| Number of Items | 1 |
| Part Number | BL099 |
| Power Connector Type | 4-Pin |
| Product Dimensions | 5.51"L x 0.98"W x 5.51"H |
| Set Name | PWM Pro Version |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Warranty Description | 1 year |
| Wattage | 3.04 watts |
A**N
One of the very best airflow fans on the market
I was looking to get the best low-noise but high performance fan for the single output of my case to balance with the 4 low-noise fans I had running for air intake. Originally I had Fractal Design Dynamic GP14 fan that came with the case but I swapped that to be an additional input when I upgraded to a higher powered Corsair ML140 Pro. With the Corsair fan performance was decent but I found it seemed to get a bit noisy at moderate speeds. Realistically, my cooling setup was always more than adequate, I didn't have any temperature issues whatsoever, but I am a bit of a nerd for good air cooling and just like upgrading something once in a while and it seemed like there was room for improvement here. I had the corsair for several years but I would occasionally do research on fans or watch the latest reviews and comparisons of fans on youtube. Eventually the time felt right that I felt like spending the money and that there were some good options to upgrade to. This fan has been a definite improvement capable of moving more air at lower sound levels. I also like that it has the headroom to push to even higher speeds than I need with my current setup just in case I ever feel like it or was trying to max my performance having fun overclocking and benchmarking. I didn't bother to do any recorded tests of my temps but my subjective experience has been that I am very happy with the performance as I created a fan curve for it that gives me what I want airflow wise and my computer remains quieter than it did before. I also stepped away from having my computer with so many LED lights so the transition to a fan without lights worked for me. A few months ago I made significant upgrades to my processor and my video card and this still handles everything I can throw at it with ease and quietness. I have been super happy with the performance of this fan and will definitely have them in mind next time I am building a system.
M**Z
I exclusively use be quite fans on PC builds have not had a failure yet
Great 120mm fan choice, quite when at lower RPMs, and move a lot of air when turned up. I exclusively use Be quiet fans and have not had a failure yet. Thick material on the fan and blades, quality look and feel, mounting hardware is quality and the power cables look great.
M**H
Best 140mm silent fans on the market
I’ve tried a lot of high-end fans from Noctua, Phanteks, Lian Li, Arctic, etc, and I was really surprised with how good the SWP 4’s are. In some ways IMO they are one of the best 140mm fans on the market, if not thee best. Let me explain why. In terms of brands the two best fans I’ve ever used are the Noctua NF-A12 G2’S and the Phanteks T30. Like the SWP 4’s they both strike the perfect balance between high airflow and silent operation. HOWEVER, the reason why I ended up going with the SWP 4’s is because (1) the Noctua G2’s only come in their distinctive yet fugly brown color, and (2) Phanteks still hasn’t released a 140mm version of the T30. So essentially, if you need black 140mm fans that are both high performing and silent, the SWP 4’s are currently the best option on the market today. They’re also a very attractive fan with high quality cabling so if you’re into aesthetic building like I am they look great on a radiator. In terms of how quiet they are, I have them in my SFF PC which sits directly on my work desk and while idle my PC is completely silent. But even at higher RPM my PC sounds similar to an air purifier - no vibrations, motor sounds, droning, etc, just a pleasant and subtle rush of air akin to white noise. Overall I definitely recommend these fans especially if you need 140mm.
I**N
Very Quiet/Good Airflow
I have purchased about 3-4 of these so far, and my case is full of them. They run great, and are very cheap for their performance. I can easily adjust the fan speed using the BIOS in my motherboard, and their black color is very sleek for my case. They have lasted me 3 years so far, and are still going strong. The airflow is also nice.
T**C
Premium fan and very quiet
Very nice quality, cable is nicely braided too. Very impressed with the noise level at full speed. I expected it to be very loud at max speed but not at all, much quieter than 1500 rpm corsair fans. Now every fan is getting replaced with these.
A**E
Beautifully blacked out.
The best fans I've ever owned. They are quiet quiet. Really nice. I have an all black set up and they work so dang well. Mine are set at max speed at all times and they dont make any noise. The black is sold and they wear easy as all heck to install. Love them.
L**A
Worth it
Very quiet, non audible at low rpms while gaming. Using these around 600 rpms and keeps my pc cool. They move air efficiently, great in blackout low rbg builds. Worth price.
S**S
Not Quite the Best Bang for $
Overall this is a quality PC fan. That being said there are better options and values for your money. I bought two of these fans to use in my tower cooler (ThermalRight Peerless Assassin 120) cooling a Ryzen 7800X3D. I was and am currently running two XPG Vento Pro - Nidac Gentle Typhoon fans), and wanted to see if the Silent Wings Pro 4 fans would make a difference, based off online reviews and higher CFM at top speed. After a couple days of use here are my conclusions. PRO: Top Speeds. With Ultra High Speed selected on the fan, you can get a top speed of more/less 3000 RPM. Compared to the XPG fans I'm using which top out at 2150 RPM, that's quiet a bit of headroom. CON: You're only getting those top speeds while benchmarking or cpu stress testing. Yes, the Silent Wings preform better and move more air that other fans, but 90% of the time you're going to be using these fans at low percentages, and not benefiting from that additional speed/air flow unless your really putting a load on your CPU. I have custom fan curves set, and even while gaming (RTX 4080 @ 1440p UW) my CPU never got hot enough that the higher speeds of these fans kicked in. PRO: Quiet, Quiet, Quiet.... these fans are super quite.... at idle and medium speeds. You almost forget they are running. They defiantly live up to their name here. CON: Not that quite at 3000 RPM when running all out.... but then again, you wouldn't expect them to be, but kind of ties into my next point. CON: At idle and medium speeds these fans are moving less air than my $21 XPG - Gentle Typhoon fans. Like I said, I ran these for a complete day of work, web browsing, YouTube, etc. with HWInfo64 open the whole time to monitor temps. They ran about 1C - 1.5C degrees warmer than my Gentle Typhoon fans... may not sound like a lot, but they did run warmer. That being said, when I ran a couple benchmarks, they were a couple degrees cooler than other fans... but I'd totally expect them to be due to 2150 RPM vs. 3000 RPM. This goes back to my previous points, yes technically these fans can cool better at higher speeds, however 1) how often are you actually running at these higher speeds, and 2) to get the full cooling benefit of these fans, you're sacrificing the the quietness of them, which is most attractive thing about them. PRO: Damn they look sexy. Can't say I've ever seen a better looking fan... for whatever that is worth. CON: Price. I'm not a person who cares that much for price, I typically want the best product for my system, price be damned. But I realize I'm most likely in the minority in that regard. At $35 each you can make up your own mind on the value of this fan, compared to the XPG fans, which are currently $21 each on Amazon. Conclusion: After giving these fans a try, I am retuning them and putting back in my XPG - Gentle Typhoons. No they don't spin at 3000 RPM at top speed, and no they aren't all nice and black with sexy lines on the fins, BUT they cool better at temp ranges that my CPU will fall in 90% of the time, for roughly 2/3 of the price. And I can live with that.
J**Y
Easy to install
The instructions manual is hidden under the fan package , come with 2 sizes of the mounting and the screws in the accessories box. Depend on which mounting you prefer , installation was very easy and quiet
M**A
Muy buen ventilador
Está increíble. Tiene excelentes velocidades y no hace ni un poco de ruido. Totalmente silencioso incluso a su máxima capacidad. Recomendado totalmente. Ojalá haya en el futuro uno de la misma marca disponible en 80mm
R**N
Great quality
Exchanged my stock EK Nucleus AIO fans. Didn't do much for the temps or noise in my original push config in a Meshlicious case. Switched to a pull config (fans outside the case, and the temps and noise is amazing now! Next time I will test Noctua instead tho.
A**A
Silenzio e prestazioni
Dopo aver provato le be quiet! Silent Wings Pro 4 140mm nella stessa build e averne apprezzato la qualità, ho deciso di acquistare anche queste da 120mm, per montarle sull’AIO. Uso il mio PC esclusivamente per il gaming, e cercavo delle ventole che non solo fossero silenziose, ma che fossero anche in grado di gestire le alte temperature che arrivano quando spingo il sistema al limite. Be quiet! mi ha sempre impressionato, e con queste ventole non sono rimasto deluso. 🔇 Silenziosità La prima cosa che mi viene in mente quando penso a queste ventole è quanto siano silenziose, e questo è stato uno dei motivi principali per cui le ho scelte. Sì, è vero che girano fino a 3000 rpm, e a quella velocità si cominciano a sentire, ma il rumore che producono non è mai fastidioso. È un rumore “da ventola”, che ti fa capire che stanno lavorando, ma non disturba in nessun modo, nemmeno nelle sessioni più lunghe di gaming. Per me, che gioco spesso per ore, la tranquillità di non sentire un rumore fastidioso è fondamentale. E anche quando gioco con la musica in sottofondo, nemmeno me ne accorgo. 🌬 Prestazioni di Raffreddamento Quello che mi ha veramente colpito è che, nonostante la silenziosità, queste ventole fanno il loro lavoro alla grande. Il mio sistema non si surriscalda mai, nemmeno quando spingo il PC durante le sessioni di gioco più intense. Ho provato a stressarlo un po’, e posso dire che il raffreddamento è stato impeccabile. Le temperature sono sempre rimaste basse, e questo mi dà una grande tranquillità. Non devo più preoccuparmi del calore che può accumularsi durante le maratone di gaming. 🛠 Costruzione e Qualità A livello di costruzione, queste ventole sono proprio come me le aspettavo: solide, ben fatte, con una qualità che si sente appena le prendi in mano. Ho sempre avuto una certa fiducia nel marchio Be quiet!, e ogni volta che compro qualcosa di loro, è come se non potessero deludermi. Le ventole si montano facilmente e sono molto silenziose, anche durante il montaggio. La sensazione di qualità si percepisce subito, e mi fa pensare che, anche dopo mesi o anni di utilizzo, non avranno mai problemi. ⚡ Efficienza Energetica Un altro aspetto che mi ha convinto è l’efficienza energetica. So che a 3000 rpm le ventole lavorano al massimo, ma nonostante la potenza, il consumo energetico è contenuto. Questo mi ha fatto riflettere sul fatto che, pur avendo un sistema potente e performante, riesco comunque a mantenere un buon bilanciamento con il consumo di energia. Non è una cosa che capita sempre con ventole così potenti. 🔧 Compatibilità Essendo parte della stessa build delle 140mm, queste ventole si sono integrate perfettamente nel mio sistema. Non ho avuto alcun tipo di problema durante l’installazione, e tutto è andato liscio come l’olio. È stato bello vedere il sistema diventare più coerente con ventole della stessa serie, ma di dimensioni diverse. Si sono adattate perfettamente al mio AIO, senza dover fare alcun aggiustamento. 🕰 Longevità Essendo le 140mm che ho già montato nella mia build ancora in perfetta forma, sono abbastanza sicuro che queste 120mm non mi daranno problemi nel lungo periodo. Il materiale è di qualità, e tutto sembra fatto per durare. Non vedo l’ora di vedere come si comporteranno nel tempo, ma sono piuttosto tranquillo a riguardo. 💰 Rapporto Qualità-Prezzo Ok, non sono le ventole più economiche che troverai, ma sinceramente, il prezzo è giustificato dalla qualità. Per come sono costruite, per quanto sono silenziose e per le prestazioni che offrono, non mi dispiace affatto l’investimento. Quando si tratta di raffreddamento, preferisco spendere un po’ di più, sapendo che avrò un prodotto che durerà a lungo e che farà il suo lavoro in modo impeccabile. Conclusioni Le be quiet! Silent Wings Pro 4 120mm sono davvero una scelta azzeccata per chi cerca prestazioni elevate senza compromettere la silenziosità. Dopo aver provato le 140mm, non avevo dubbi che queste 120mm non mi avrebbero deluso, e posso confermare che è così. Il mio PC è sempre fresco e silenzioso, anche nelle situazioni più stressanti. Se come me usi il PC per il gaming e non vuoi sentire rumori fastidiosi, queste ventole sono quello che ti serve. Consigliatissime!
J**A
Be Quiet! Silent Wings 4 - 140 mm - PWM 1100 RPM - Avaliação - 25.04.2026.
Recebi o produto em perfeitas condições, sem avarias, e já está instalado no meu computador. Estou plenamento satisfeito com a eficiência da Amazon.com.br. Super confiável!
Trustpilot
2 months ago
1 month ago