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Corsair AF120 Slim vs Lian Li UNI FAN SL140: Comparison
Corsair AF120 Slim vs Lian Li UNI FAN SL140 airflow compared
Start with airflow, because it is the widest measured gap between them: Corsair AF120 Slim 56.3 CFM against Lian Li UNI FAN SL140 70.5 CFM, 20% in favour of Lian Li UNI FAN SL140. Static pressure runs the same way, 1.9 mmH2O on the Corsair AF120 Slim versus 1.67 mmH2O on the Lian Li UNI FAN SL140, another win for Corsair AF120 Slim. Add max speed to that, 2000 RPM on the Corsair AF120 Slim versus 1500 RPM on the Lian Li UNI FAN SL140, and the pattern holds. Rgb lighting is not the same on both, No on the Corsair AF120 Slim versus Yes on the Lian Li UNI FAN SL140.
Which should you buy, Corsair AF120 Slim or Lian Li UNI FAN SL140?
The Corsair AF120 Slim is the one to take for tight-clearance builds where a standard 25mm-thick fan won't physically fit. Avoid it for builds with no clearance constraints, a standard-thickness fan like the Noctua NF-A12x25 will generally outperform this one. Buy the Lian Li UNI FAN SL140 for mixed 120/140mm UNI FAN SL builds and quiet open-air intake and exhaust, though it is not the pick for radiator duty needing higher static pressure and builds without a case window. Our rating of the Corsair AF120 Slim (7/10): A clearance-solving slim 120mm fan that keeps most of the airflow a standard-depth fan would give you. Our rating of the Lian Li UNI FAN SL140 (8/10): A quiet, good-looking 140mm ARGB fan that pairs cleanly with the rest of the UNI FAN SL lineup.
Frequently asked questions
Do the Corsair AF120 Slim and Lian Li UNI FAN SL140 differ on noise level?
Yes. Noise Level reads 25.6 dBA on the Corsair AF120 Slim versus 30 dBA on the Lian Li UNI FAN SL140.
Is the Bearing Type the same on the Corsair AF120 Slim and Lian Li UNI FAN SL140?
It is. Both are listed at Fluid Dynamic, so it is not a reason to pick one over the other.
Specs and benchmarks
Fan Size
- Corsair AF120 Slim
- 120 mm
- Lian Li UNI FAN SL140
- 140 mm
Brand
- Corsair AF120 Slim
- Corsair
- Lian Li UNI FAN SL140
- Lian Li
Model
- Corsair AF120 Slim
- AF120 Slim
- Lian Li UNI FAN SL140
- UNI FAN SL140
Bearing Type
- Corsair AF120 Slim
- Fluid Dynamic
- Lian Li UNI FAN SL140
- Fluid Dynamic
Lighting
- Corsair AF120 Slim
- None
- Lian Li UNI FAN SL140
- ARGB
Fan Thickness
- Corsair AF120 Slim
- 15 mm
- Lian Li UNI FAN SL140
- 25 mm
Static Pressure
- Corsair AF120 Slim
- 1.9 mmH2OBest
- Lian Li UNI FAN SL140
- 1.67 mmH2O-12%
Max Speed
- Corsair AF120 Slim
- 2000 RPMBest
- Lian Li UNI FAN SL140
- 1500 RPM-25%
Airflow
- Corsair AF120 Slim
- 56.3 CFM-20%
- Lian Li UNI FAN SL140
- 70.5 CFMBest
Noise Level
- Corsair AF120 Slim
- 25.6 dBABest
- Lian Li UNI FAN SL140
- 30 dBA
PWM Control
- Corsair AF120 Slim
- Yes
- Lian Li UNI FAN SL140
- Yes
Min Speed
- Corsair AF120 Slim
- 600 RPMBest
- Lian Li UNI FAN SL140
- 500 RPM
RGB Lighting
- Corsair AF120 Slim
- No
- Lian Li UNI FAN SL140
- Yes
Which one should you pick?
Choose Corsair AF120 Slim if you want the higher static pressure (1.9 mmH2O vs 1.67 mmH2O), the higher max speed (2000 RPM vs 1500 RPM) and the lower noise level (25.6 dBA vs 30 dBA).
Choose Lian Li UNI FAN SL140 if you want the higher airflow (70.5 CFM vs 56.3 CFM).
Price comparison
| Retailer | Corsair AF120 Slim | Lian Li UNI FAN SL140 |
|---|---|---|
| Amazon | $24.99 View on Amazon | |
| Newegg | View on Newegg |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
Corsair AF120 Slim
7 / 10 Expert Rating
A clearance-solving slim 120mm fan that keeps most of the airflow a standard-depth fan would give you.
Lian Li UNI FAN SL140
8 / 10 Expert Rating
A quiet, good-looking 140mm ARGB fan that pairs cleanly with the rest of the UNI FAN SL lineup.