Buying Guide
The Best Quiet PC Case Fans
From the NF-A14 PWM to the NF-A12x25 LS-PWM: three case fans ranked on pack size and top speed, with who should skip each one.
By Alex Morgan, PC Hardware Editor
11 min read3 products evaluated
Quiet fans balance airflow against noise. Every pick has a maximum noise figure of 25 dB(A) or lower, ordered from the lowest listed price.
We sorted these picks by fans in box, max speed and rated noise, working from the makers' own data; nothing here was tested in-house, and any figure a maker omits is noted as missing.
Quick Picks
Which of the 3 picks to look at first. Tap a name for the full analysis.
Lowest Price Here
Noctua NF-A14 PWM 140mmThe lowest price among these case fans at the time of writing.
Best for: Buyers who would rather put the savings elsewhere than into the NF-A12x25.
Check price for Noctua NF-A14 PWM 140mm on Amazon (opens in a new tab)
Highest Top Speed
Noctua NF-A12x25 PWMThe highest top speed here (2000 RPM).
Best for: Buyers who put top speed first.
Check price for Noctua NF-A12x25 PWM on Amazon (opens in a new tab)Also Consider
Noctua NF-A12x25 LS-PWM 120mmA 12.1 dB(A) maximum.
Best for: Buyers who want 12.1 dB(A) maximum.
Check price for Noctua NF-A12x25 LS-PWM 120mm on Amazon (opens in a new tab)
| Pick | Why it stands out | Best for | Check price |
|---|---|---|---|
| The lowest price among these case fans at the time of writing. | Buyers who would rather put the savings elsewhere than into the NF-A12x25. | Check price for Noctua NF-A14 PWM 140mm on Amazon (opens in a new tab) |
| The highest top speed here (2000 RPM). | Buyers who put top speed first. | Check price for Noctua NF-A12x25 PWM on Amazon (opens in a new tab) |
| A 12.1 dB(A) maximum. | Buyers who want 12.1 dB(A) maximum. | Check price for Noctua NF-A12x25 LS-PWM 120mm on Amazon (opens in a new tab) |
Our Picks
Lowest Price Here1 of 3
Noctua NF-A14 PWM 140mm
What the NF-A14 PWM brings to the table is a 140mm square frame suited to radiators, plus Flow Acceleration Channels.
Best for
- Buyers who would rather put the savings elsewhere than into the NF-A12x25.
Skip if
- Skip it if this is a deal-breaker for you: sold as a single fan, so a full case costs more.
Why we like it
It also comes as 1 fan and offers a 1500 RPM top speed. Its 1500 RPM top speed ranks second of 3 here, behind the NF-A12x25 (2000 RPM) and ahead of the NF-A12x25 LS-PWM (1200 RPM). A 24.6 dB(A) rated noise is unique to it among these picks, while the NF-A12x25 LS-PWM uses a 12.1 dB(A) rated noise.
You also get a rated life above 150,000 hours. Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers. No other pick here cost less at our last price check, and the NF-A12x25 was closest.
Key specs
- Fans in box
- 1 fan
- Max speed
- 1500 RPM
- Rated noise
- 24.6 dB(A)
- Lighting
- None
Pros
- 140mm square frame suited to radiators
- Flow Acceleration Channels
- Rated life above 150,000 hours
- Top speed of 1500 RPM, ahead of the NF-A12x25 LS-PWM
Cons
- Sold as a single fan, so a full case costs more
- Top speed of 1500 RPM, behind the NF-A12x25 (2000 RPM)
Highest Top Speed2 of 3
Noctua NF-A12x25 PWM
The Noctua NF-A12x25 is an unlit 120mm fan with Sterrox LCP blades and a 0.5mm tip clearance.
Best for
- Buyers who put top speed first.
Skip if
- Look at the others if this bothers you: sold as a single fan, so a full case costs more.
Why we like it
It tops out at 2,000 RPM, and the included Low-Noise Adaptor caps it at 1,700 RPM. It has a record-tight 0.5mm tip clearance and an LCP blade, and comes with anti-vibration mounts, a Y-cable and an extension. Nothing else here matches its 2000 RPM top speed; the NF-A14 PWM comes closest at 1500 RPM.
It is the only pick here with a 22.6 dB(A) rated noise; the NF-A14 PWM has a 24.6 dB(A) rated noise instead. Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers. Its price falls between the NF-A14 PWM and the NF-A12x25 LS-PWM, based on our last check.
Key specs
- Fans in box
- 1 fan
- Max speed
- 2000 RPM
- Rated noise
- 22.6 dB(A)
- Lighting
- None
Pros
- 0.5mm tip clearance and Sterrox LCP blades
- Low-Noise Adaptor that caps speed at 1700 RPM
- Anti-vibration mounts and a Y-cable in the box
- Highest top speed of the picks (2000 RPM)
Cons
- Sold as a single fan, so a full case costs more
- Costs more than the NF-A14 PWM at the time of writing
Also Consider3 of 3
Noctua NF-A12x25 LS-PWM 120mm
The NF-A12x25 LS-PWM is built around a 12.1 dB(A) maximum, with a fan that stops at 0% PWM on top.
Best for
- Buyers who want 12.1 dB(A) maximum.
Skip if
- Choose another pick if you can't accept this: sold as a single fan, so a full case costs more.
Why we like it
On the spec sheet, it comes as 1 fan and offers a 1200 RPM top speed. Its 1200 RPM top speed is the lowest in this group; the NF-A12x25 leads at 2000 RPM. You get a 12.1 dB(A) rated noise here, which sets it apart from the NF-A12x25 and its a 22.6 dB(A) rated noise.
Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers. Worth noting: stops spinning at very low PWM for silent idle. It gives ground on pack size, where the NF-A14 PWM comes in at 1 fan.
Key specs
- Fans in box
- 1 fan
- Max speed
- 1200 RPM
- Rated noise
- 12.1 dB(A)
- Stops at low PWM
- Yes
- Lighting
- None
Pros
- Stops spinning at very low PWM for silent idle
- 12.1 dB(A) maximum
- Low-speed 1200 RPM maximum
- 12.1 dB(A) rated noise, the only one here
Cons
- Sold as a single fan, so a full case costs more
- Top speed trails the NF-A12x25 (2000 RPM)
- Costs more than the NF-A14 PWM at the time of writing
How We Chose These Quiet PC Case Fans
Alex Morgan compared the manufacturer specifications, connectivity, warranty terms and compatibility of every pick. Figures come from the makers unless a third-party source is named; we did not test these products ourselves.
- What we compared
- We lined up three case fans on pack size, top speed, rated noise and lighting, using each maker's published specs. These are research figures, not bench results, and every compared field is stated for all 3 picks.
- The shared baseline
- All 3, from the NF-A14 PWM to the NF-A12x25 LS-PWM, state pack size, top speed and rated noise.
- Who each pick suits
- The NF-A14 PWM for the lowest price among these case fans at the time of writing; the NF-A12x25 for the highest top speed here (2000 RPM); the NF-A12x25 LS-PWM for a 12.1 dB(A) maximum.
- Price range
- From the NF-A14 PWM to the NF-A12x25 LS-PWM, all sat in the under $50 tier when we checked.
What to Look for in a Quiet PC Case Fan
Key buying criteria so you get the right fit the first time.
Top speed
Here top speed runs from 1200 RPM on the NF-A12x25 LS-PWM to 2000 RPM on the NF-A12x25, a 67% spread. For less, the NF-A14 PWM is the runner-up at 1500 RPM.
Features beyond the spec table
The NF-A14 PWM: Flow Acceleration Channels. The NF-A12x25: a Low-Noise Adaptor that caps speed at 1700 RPM. The NF-A12x25 LS-PWM: a fan that stops at 0% PWM.
A tower air cooler in a case with red-lit fans Where your budget lands
Price does little to separate these 3: the NF-A14 PWM through the NF-A12x25 LS-PWM all landed in the under $50 tier, which leaves top speed to decide it.
Match the pick to your priority
Buyers who would rather put the savings elsewhere than into the NF-A12x25: the NF-A14 PWM. Buyers who put top speed first: the NF-A12x25.
An all-in-one liquid cooler pump block above a graphics card Plan fan control and headers
4-pin PWM fans let the motherboard vary speed with temperature. Several fans on one header need a splitter or hub within the header's current limit.
How to Choose a Quiet PC Case Fan
By priority
| Priority | Consider | Why |
|---|---|---|
| Buyers who would rather put the savings elsewhere than into the NF-A12x25 | NF-A14 PWM | The lowest price among these case fans at the time of writing |
| Buyers who put top speed first | NF-A12x25 | The highest top speed here (2000 RPM) |
| Buyers who want 12.1 dB(A) maximum | NF-A12x25 LS-PWM | A 12.1 dB(A) maximum |
Scroll sideways to see every column.
Key specs side by side
The NF-A12x25 leads on top speed at 2000 RPM, ahead of the NF-A14 PWM at 1500 RPM.
| Case Fan | Fans in box | Max speed | Rated noise | Lighting |
|---|---|---|---|---|
| NF-A14 PWM | 1 fan | 1500 RPM | 24.6 dB(A) | None |
| NF-A12x25 | 1 fan | 2000 RPM | 22.6 dB(A) | None |
| NF-A12x25 LS-PWM | 1 fan | 1200 RPM | 12.1 dB(A) | None |
Scroll sideways to see every column.
Frequently Asked Questions
How does the NF-A14 PWM compare with the NF-A12x25 on top speed?
The NF-A12x25 leads at 2000 RPM, with the NF-A14 PWM at 1500 RPM. The spread runs down to the NF-A12x25 LS-PWM at 1200 RPM.
Is the NF-A12x25 LS-PWM worth paying more than the NF-A14 PWM?
The NF-A12x25 LS-PWM matches or trails the NF-A14 PWM on top speed. The NF-A14 PWM leads on top speed (1500 RPM). Both sat in the under $50 tier when we checked, so choose on the features you need.
What makes the NF-A12x25 the Highest Top Speed?
It earns the label for the highest top speed here (2000 RPM). The NF-A14 PWM is next on top speed at 1500 RPM, so this pick's 2000 RPM is 33% further out. It suits anyone who puts top speed first.
Do the NF-A14 PWM and the NF-A12x25 differ on rated noise?
The NF-A14 PWM uses 24.6 dB(A); the NF-A12x25 uses 22.6 dB(A); the NF-A12x25 LS-PWM uses 12.1 dB(A).
Beyond the specs, what sets the NF-A14 PWM and the NF-A12x25 apart?
The NF-A14 PWM: a 140mm square frame suited to radiators. The NF-A12x25: a 0.5mm tip clearance and Sterrox LCP blades. The NF-A12x25 LS-PWM: a 12.1 dB(A) maximum.
Bottom Line
Our first pick is the NF-A14 PWM, chosen for the lowest price among these case fans at the time of writing. Look at the NF-A12x25 for the highest top speed here (2000 RPM) and the NF-A12x25 LS-PWM for a 12.1 dB(A) maximum if those matter more to you.
Run fans on a fan curve; most noise comes from spinning faster than needed.
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About the author
PC Hardware Editor
Alex covers PC hardware, monitors, components, upgrades and peripherals for The PC Journal, with a focus on helping readers understand specifications, compatibility and meaningful product trade-offs.
Covers: Monitors, Graphics cards, Processors, PC components, Peripherals, Upgrades and compatibility
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