Buying Guide
The Best Case Fans Under $20
Five case fans ranked on pack size and top speed, where the AS-120-K Trio has the highest top speed; the NF-P12 redux is the cheapest route in.
By The PC Journal editorial team
12 min read5 products evaluated
From $15 to $20 you find multi-packs with better bearings and stated airflow figures. Every pick cost 15 to 20 when we checked and lists its size and speed.
Rankings weigh fans in box, max speed and rated airflow as the makers state them; if a maker skips rated airflow, the guide says so rather than guess, since we have not benched them.
Quick Picks
Our 5 recommendations at a glance. Tap a pick for the full verdict.
Highest Rated Airflow
Thermalright TL-C14C-S X3 140mm ARGB 3-Pack
The highest rated airflow here (75.8 CFM).
Best for: Moving air through a warm case.
Our take Check price for Thermalright TL-C14C-S X3 140mm ARGB 3-Pack (opens in a new tab)
Also Consider
ID-COOLING XF-12025-ARGB-TRIO 120mm Fans (3-pack)
A 700 to 1,500 RPM PWM range.
Best for: Buyers who want 700 to 1,500 RPM PWM range.
Our take Check price for ID-COOLING XF-12025-ARGB-TRIO 120mm Fans (3-pack) (opens in a new tab)
Highest Top Speed
ID-COOLING AS-120-K Trio 120mm PWM Fans (3-pack)
The highest top speed here (2000 RPM).
Best for: Buyers who put top speed first.
Our take Check price for ID-COOLING AS-120-K Trio 120mm PWM Fans (3-pack) (opens in a new tab)
Lowest Price Here
Noctua NF-P12 redux-1700 PWM 120mm
A lower price than the NF-S12B redux and the rest when we checked.
Best for: Getting pressure-optimised blade design for the least money.
Our take Check price for Noctua NF-P12 redux-1700 PWM 120mm (opens in a new tab)
Strong Alternative
Noctua NF-S12B redux-1200 PWM 120mm
An 18.1 dB(A) noise rating.
Best for: Buyers who want 18.1 dB(A) noise rating.
Our take Check price for Noctua NF-S12B redux-1200 PWM 120mm (opens in a new tab)
Our Picks
Highest Rated Airflow1 of 5
Thermalright TL-C14C-S X3 140mm ARGB 3-Pack on Amazon (opens in a new tab)
What the TL-C14C-S X3 brings to the table is three 140mm ARGB fans, plus 75.8 CFM of rated airflow.
Best for
- Moving air through a warm case.
Skip if
- Price-first buyers should look at the NF-P12 redux, which cost less when we checked.
Why we like it
It also comes as 3 fans and offers a 1500 RPM top speed. On pack size it ties with the XF-12025 ARGB Trio and the AS-120-K Trio at 3 fans. On top speed it ties with the XF-12025 ARGB Trio at 1500 RPM.
Its 75.8 CFM rated airflow is the highest here; the XF-12025 ARGB Trio comes next at 62 CFM. No other pick in this guide offers a 26.4 dB(A) rated noise; compare the NF-P12 redux, which has a 25.1 dB(A) rated noise. It also comes with an S-FDB bearing.
Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers. On price it sat third of 5, between the cheaper NF-S12B redux and the pricier XF-12025 ARGB Trio, at the time of writing.
Key dimensions & specs
- Fans in box: 3 fans
- Max speed: 1500 RPM
- Rated airflow: 75.8 CFM
- Static pressure: 1.93 mmH2O
- Rated noise: 26.4 dB(A)
- Bearing: S-FDB
- Lighting: ARGB
Pros
- 3 fans in the box
- 75.8 CFM rated airflow
- a S-FDB bearing
- ARGB lighting
Cons
- Costs more than the NF-P12 redux at the time of writing
Also Consider2 of 5
ID-COOLING XF-12025-ARGB-TRIO 120mm Fans (3-pack) on Amazon (opens in a new tab)
What the XF-12025 ARGB Trio brings to the table is a 700 to 1,500 RPM PWM range, plus 5V 3-pin ARGB sync with the motherboard.
Best for
- Buyers who want 700 to 1,500 RPM PWM range.
Skip if
- Skip it if price comes first: the NF-P12 redux cost less when we checked.
Why we like it
It also comes as 3 fans and offers a 1500 RPM top speed. On pack size it ties with the TL-C14C-S X3 and the AS-120-K Trio at 3 fans. Its 62 CFM rated airflow ranks second of 3 here, behind the TL-C14C-S X3 (75.8 CFM) and ahead of the AS-120-K Trio (58 CFM).
You also get an even light diffuser built into the frame. Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers. With 3 fans, use a splitter or hub rather than several headers, and check the header's current rating; each fan's draw is on the label.
Its price falls between the TL-C14C-S X3 and the AS-120-K Trio, based on our last check. Buyers who need a confirmed static pressure should compare it with the AS-120-K Trio, which offers 1.94 mmH2O.
Key dimensions & specs
- Fans in box: 3 fans
- Max speed: 1500 RPM
- Rated airflow: 62 CFM
- Lighting: ARGB
Pros
- 3 fans in the box
- 62 CFM rated airflow
- ARGB lighting
- 700 to 1,500 RPM PWM range
Cons
- Costs more than the NF-P12 redux at the time of writing
Highest Top Speed3 of 5
ID-COOLING AS-120-K Trio 120mm PWM Fans (3-pack) on Amazon (opens in a new tab)
What the AS-120-K Trio brings to the table is a 300 to 2,000 RPM PWM range, plus daisy-chain connectors between the fans.
Best for
- Buyers who put top speed first.
Skip if
- Skip it if rated airflow matters most to you; the TL-C14C-S X3 offers 75.8 CFM.
Why we like it
It also comes as 3 fans and offers a 2000 RPM top speed. It matches the TL-C14C-S X3 and the XF-12025 ARGB Trio on pack size (3 fans). Nothing else here matches its 2000 RPM top speed; the NF-P12 redux comes closest at 1700 RPM.
On rated airflow it trails the group at 58 CFM, while the TL-C14C-S X3 offers 75.8 CFM. You get a 27.2 dBA rated noise here, which sets it apart from the TL-C14C-S X3 and its a 26.4 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.
With 3 fans, use a splitter or hub rather than several headers, and check the header's current rating; each fan's draw is on the label. Only the XF-12025 ARGB Trio came close to it on price at the time of writing; it cost the most of the 5 picks.
Key dimensions & specs
- Fans in box: 3 fans
- Max speed: 2000 RPM
- Rated airflow: 58 CFM
- Static pressure: 1.94 mmH2O
- Rated noise: 27.2 dBA
- Bearing: Hydraulic
- Lighting: None
Pros
- 3 fans in the box
- 58 CFM rated airflow
- a Hydraulic bearing
- 300 to 2,000 RPM PWM range
Cons
- Rated airflow trails the TL-C14C-S X3 (75.8 CFM)
- Costs more than the NF-P12 redux at the time of writing
Lowest Price Here4 of 5
Noctua NF-P12 redux-1700 PWM 120mm on Amazon (opens in a new tab)
What the NF-P12 redux brings to the table is a pressure-optimised blade design, plus a rated life above 150,000 hours.
Best for
- Getting pressure-optimised blade design for the least money.
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 also comes as 1 fan and offers a 1700 RPM top speed. On pack size it ties with the NF-S12B redux at 1 fan. On top speed it sits mid-pack at 1700 RPM: the AS-120-K Trio offers 2000 RPM, and the NF-S12B redux comes in at 1200 RPM.
It is the only pick here with a 25.1 dB(A) rated noise; the AS-120-K Trio has a 27.2 dBA rated noise instead. It also comes with a low price for a Noctua fan. Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers.
It was the cheapest of the group when we checked; the NF-S12B redux was the next step up. Buyers who need a confirmed rated airflow should compare it with the TL-C14C-S X3, which offers 75.8 CFM.
Key dimensions & specs
- Fans in box: 1 fan
- Max speed: 1700 RPM
- Rated noise: 25.1 dB(A)
- Lighting: None
Pros
- Pressure-optimised blade design
- Rated life above 150,000 hours
- Low price for a Noctua fan
- Top speed of 1700 RPM, ahead of the TL-C14C-S X3
Cons
- Sold as a single fan, so a full case costs more
- No published rated airflow
Strong Alternative5 of 5
Noctua NF-S12B redux-1200 PWM 120mm on Amazon (opens in a new tab)
The NF-S12B redux is built around an 18.1 dB(A) noise rating, with a rated life above 150,000 hours on top.
Best for
- Buyers who want 18.1 dB(A) noise rating.
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. On pack size it ties with the NF-P12 redux at 1 fan. On top speed it trails the group at 1200 RPM, while the AS-120-K Trio offers 2000 RPM.
No other pick in this guide offers an 18.1 dB(A) rated noise; compare the AS-120-K Trio, which has a 27.2 dBA rated noise. It also offers a low-airflow-resistance blade design. Check that your case has 120mm mounts in the positions you plan to use, and how many fan headers your motherboard offers.
On price it sat second of 5, between the cheaper NF-P12 redux and the pricier TL-C14C-S X3, at the time of writing. The trade-off is pack size; for more, the TL-C14C-S X3 comes in at 3 fans.
Key dimensions & specs
- Fans in box: 1 fan
- Max speed: 1200 RPM
- Rated noise: 18.1 dB(A)
- Lighting: None
Pros
- 18.1 dB(A) noise rating
- Rated life above 150,000 hours
- Low-airflow-resistance blade design
Cons
- Sold as a single fan, so a full case costs more
- Pack size trails the TL-C14C-S X3 (3 fans)
- Top speed trails the AS-120-K Trio (2000 RPM)
How We Chose These Case Fans Under $20
Each pick was assessed across 4 criteria weighted for real-world use.
- The figures behind the order
- We lined up five case fans on pack size, top speed, rated airflow and static pressure as the makers state them. These are research figures, not bench results: 2 of 5 picks leave out rated airflow.
- What every pick has in common
- All 5, from the TL-C14C-S X3 to the NF-S12B redux, state pack size, top speed and lighting.
- Where the specs have gaps
- The NF-P12 redux and the NF-S12B redux give no rated airflow; the XF-12025 ARGB Trio, the NF-P12 redux and the NF-S12B redux give no static pressure.
- Price range
- From the NF-P12 redux to the AS-120-K Trio, all sat in the under $50 tier when we checked.
What to Look for in a Case Fan Under $20
Key buying criteria so you get the right fit the first time.
Pack size
The TL-C14C-S X3 tops pack size at 3 fans and the NF-S12B redux sits lowest at 1 fan; 3 picks share the top figure. If pack size is your first filter, the TL-C14C-S X3 sets the ceiling at 3 fans.
Top speed across these picks
Here top speed runs from 1200 RPM on the NF-S12B redux to 2000 RPM on the AS-120-K Trio, a 67% spread. For less, the NF-P12 redux is the runner-up at 1700 RPM.
Rated airflow across these picks
Across these 3 picks rated airflow spans 58 CFM (the AS-120-K Trio) to 75.8 CFM (the TL-C14C-S X3). The TL-C14C-S X3 is the pick for rated airflow. The NF-P12 redux and the NF-S12B redux give no rated airflow figure, so 3 of 5 picks are compared here.
Bearing
The TL-C14C-S X3 lists S-FDB; the AS-120-K Trio lists Hydraulic. Settling bearing first narrows 2 picks to 1 or 1.
Extras that separate them
The XF-12025 ARGB Trio: 5V 3-pin ARGB sync with the motherboard. The AS-120-K Trio: daisy-chain connectors between the fans. The NF-P12 redux: a rated life above 150,000 hours.
How to Choose a Case Fan Under $20
By priority
| Priority | Consider | Why |
|---|---|---|
| Moving air through a warm case | TL-C14C-S X3 | The highest rated airflow here (75.8 CFM) |
| Buyers who want 700 to 1,500 RPM PWM range | XF-12025 ARGB Trio | A 700 to 1,500 RPM PWM range |
| Buyers who put top speed first | AS-120-K Trio | The highest top speed here (2000 RPM) |
| Getting pressure-optimised blade design for the least money | NF-P12 redux | A lower price than the NF-S12B redux and the rest when we checked |
| Buyers who want 18.1 dB(A) noise rating | NF-S12B redux | An 18.1 dB(A) noise rating |
Scroll sideways to see every column.
Key specs side by side
The TL-C14C-S X3 leads on pack size at 3 fans, ahead of the XF-12025 ARGB Trio at 3 fans. "Not listed" marks rated airflow where the NF-P12 redux and the NF-S12B redux leave the figure out.
| Case Fan | Fans in box | Max speed | Rated airflow | Static pressure |
|---|---|---|---|---|
| TL-C14C-S X3 | 3 fans | 1500 RPM | 75.8 CFM | 1.93 mmH2O |
| XF-12025 ARGB Trio | 3 fans | 1500 RPM | 62 CFM | Not listed |
| AS-120-K Trio | 3 fans | 2000 RPM | 58 CFM | 1.94 mmH2O |
| NF-P12 redux | 1 fan | 1700 RPM | Not listed | Not listed |
| NF-S12B redux | 1 fan | 1200 RPM | Not listed | Not listed |
Scroll sideways to see every column.
Frequently Asked Questions
How does the NF-P12 redux compare with the AS-120-K Trio on top speed?
Between the top two, it is 2000 RPM on the AS-120-K Trio against 1700 RPM on the NF-P12 redux, an 18% difference. The spread runs down to the NF-S12B redux at 1200 RPM.
Which has the highest rated airflow: the TL-C14C-S X3 or the XF-12025 ARGB Trio?
The TL-C14C-S X3 tops rated airflow at 75.8 CFM; the XF-12025 ARGB Trio follows at 62 CFM, 22% apart. The AS-120-K Trio closes the ranking at 58 CFM. The NF-P12 redux and the NF-S12B redux don't state a rated airflow figure, so they sit outside this comparison; 3 of 5 picks are ranked.
Is the AS-120-K Trio ahead of the TL-C14C-S X3 on static pressure?
The AS-120-K Trio leads at 1.94 mmH2O, with the TL-C14C-S X3 at 1.93 mmH2O. The XF-12025 ARGB Trio, the NF-P12 redux and the NF-S12B redux are left out of this ranking because their static pressure isn't stated; 2 of 5 picks are ranked.
What does the AS-120-K Trio add over the NF-P12 redux?
The spec sheets show pack size (3 fans against 1 fan) and top speed (2000 RPM against 1700 RPM) in its favour. Both sat in the under $50 tier when we checked, so the gains in pack size and top speed cost little extra by tier.
Why is the AS-120-K Trio our Highest Top Speed pick?
The label rests on the highest top speed here (2000 RPM). On top speed it leads the NF-P12 redux, 2000 RPM against 1700 RPM, an 18% margin. It makes sense for anyone who puts top speed first.
Do the TL-C14C-S X3 and the AS-120-K Trio differ on rated noise?
The TL-C14C-S X3 uses 26.4 dB(A); the AS-120-K Trio uses 27.2 dBA; the NF-P12 redux uses 25.1 dB(A); the NF-S12B redux uses 18.1 dB(A). The XF-12025 ARGB Trio has no rated noise listed, so 4 of 5 picks are covered here.
Bottom Line
Our first pick is the TL-C14C-S X3. Look at the XF-12025 ARGB Trio for a 700 to 1,500 RPM PWM range, the AS-120-K Trio for the highest top speed here (2000 RPM) and the NF-P12 redux for a lower price than the NF-S12B redux and the rest when we checked if those matter more to you.
Compare airflow in CFM and noise in dBA together; a high CFM fan can be loud.