Each fan page prints a single dBA figure next to a speed range such as 350 to 2200 RPM, and never says which speed it was taken at. The row sits in the specification table alongside airflow in CFM and m³/h, static pressure, bearing type, MTTF and warranty. No microphone distance or test standard appears anywhere on the fan or cooler pages.
That leaves the figure good for one job, telling Fractal fans apart.
A number with no stated conditions travels badly between brands, the theme of our decibel rating comparison explainer.
Which Fractal Design case fan is quietest?
The Momentum 14 RGB, at 28 dBA, with the Momentum 12 RGB a hair behind at 28.03. At the other end, the reverse-blade Dynamic 3 12 fans print the highest figures, 35.8 to 36.2. The tables below give the noise level, top speed and airflow from each Fractal page, and color versions that share a figure share a row.
| Fan | Versions | Noise level | Top speed | Airflow |
|---|
| Momentum 12 RGB | black or white | 28.03 dBA | 2200 RPM | 62.44 CFM |
| Momentum 12 | black or white | 31.3 dBA | 2200 RPM | 67.34 CFM |
| Dynamic 3 12 | black, RGB black or RGB white | 31.9 dBA | 2200 RPM | 63.9 CFM |
| Dynamic 3 12 Reverse | White | 35.8 dBA | 2200 RPM | 64.95 CFM |
| Dynamic 3 12 Reverse | Black | 35.9 dBA | 2200 RPM | 64.42 CFM |
| Dynamic 3 12 Reverse | RGB White | 36.1 dBA | 2200 RPM | 64.96 CFM |
| Dynamic 3 12 Reverse | RGB Black | 36.2 dBA | 2200 RPM | 65.38 CFM |
| Fan | Versions | Noise level | Top speed | Airflow |
|---|
| Momentum 14 RGB | black or white | 28 dBA | 1800 RPM | 74.39 CFM |
| Dynamic 3 14 | black, RGB black or RGB white | 30.8 dBA | 1800 RPM | 76.3 CFM |
| Momentum 14 | black or white | 31.9 dBA | 1800 RPM | 79.79 CFM |
All of them start at 350 RPM, and the 140 mm fans stop 400 RPM short of the 120s. Fractal's 120s sit beside Noctua, ARCTIC and Corsair in our 120 mm fan guide, and the larger size gets a separate 140 mm case fan guide.
How loud is the Fractal Momentum 14?
31.9 dBA for the plain black or white fan, 28 dBA for the Momentum 14 RGB, both across 350 to 1800 RPM.
Seven liquid crystal polymer blades, a fluid dynamic bearing, Zero RPM support and a two year warranty are common to both. They part ways at the plug: the plain fan has 4-pin PWM and an extension cable, the RGB fan Fractal Connect with a splitter. The plain fan lists 79.79 CFM and 2.26 H₂O of pressure, the RGB fan 74.39 CFM and 2.45. Momentum pages print pressure without a unit prefix, so it is quoted here as printed.
Lit Momentums list less noise, and less air
Each RGB Momentum prints a lower noise level than its plain twin, and each also lists less airflow over the same speed range. Fractal offers no explanation.
The gaps are 3.27 dBA and 4.9 CFM on the Momentum 12, 3.9 dBA and 5.4 CFM on the Momentum 14. Blades, bearing and speed ranges are identical on both pages. A fan that moves less air at its top speed usually makes less noise there, which fits both pairs, though Fractal never confirms it.
The Dynamic 3 line has no such gap. Lit and unlit, the Dynamic 3 14 prints the same 30.8 dBA and 76.3 CFM, so in that line, at least, adding lights to a fan does not by itself bring the printed noise level down at all.
The Dynamic 3 lists 30.8 dBA in 140 mm and 31.9 dBA in 120 mm. The Dynamic 3 12 Reverse versions list 35.8 to 36.2 dBA.
Every Dynamic 3 has a rifle bearing, seven swept or reverse blades, a 500 mm 4-pin PWM cable and the standard 105 mm or 125 mm screw spacing, and none of the pages has a Zero RPM row. Fractal describes the series as one that "combines cooling performance with quieter acoustics and precise control".
Why reverse? So the fan's clean side can face out in dual-chamber cases. By the printed figures, that costs about 4 dBA against the standard Dynamic 3 12, for 0.5 to 1.5 CFM more airflow.
17.6 dBA for a Radius pump, 22 dBA for a Lumen v2 pump. These are the only figures Fractal prints the same way across both lines, under "Pump specifications" in the table, at 3400 RPM for Radius and 4000 RPM for Lumen. Every Radius 240 and 360 version shows 17.6, and every Lumen S24, S28 and S36 v2 version shows 22.
Fan noise is handled differently. Lumen v2 pages print a range for the bundled Aspect fans: below 10 to 33.2 dBA for the Aspect 12 PWM at up to 2000 RPM, and below 10 to 35.5 dBA for the Aspect 14 PWM at up to 1700 RPM. With a "below" value at the bottom, those ranges are quoted but not ranked.
Radius pages have no fan noise row. They name "2x Dynamic 3 - 12", or three of them, and that fan's page lists 31.9 dBA.
For Fractal coolers next to other makers, see our AIO cooler guide.
Why is no Fractal AIO cooler a pick?
On November 8, 2026, none of the current models had an Amazon listing that was both fully in stock and named the model.
The Radius 240 RGB Black, Radius 360 Black and Radius 360 RGB White listings showed only limited stock, and the Radius 240 Black was out of stock. The Lumen listings we found left "v2" out of the title and also showed limited stock, while searches for the v2 part numbers returned nothing. Two of them, the Radius 240 RGB and Lumen S36 v2, show up among the alternatives with figures attached.
Aspect, Prisma and Venturi fans are gone
The Aspect, Prisma and Venturi fans, along with the Dynamic X2 GP and Celsius+ coolers, have dropped out of Fractal's sitemap and product listings. Their old addresses send visitors back to the category pages.
The last versions of those pages that we could read, through the Internet Archive, printed one speed beside each figure. Today's pages do not.
Those fans topped out at 1000 to 1200 RPM, well under the 1800 and 2200 RPM of current fans, so the old and new figures are no like-for-like match. Amazon still had a new, in-stock Dynamic X2 GP-12 listing on November 8, but with no page from Fractal behind it any more, it stays off this list. For a brand that prints a figure at a stated speed for every model, see our Noctua fan noise page.
