Side-by-Side Comparison
Lian Li UNI Fan CL Flex 120mm Normal Blade ARGB vs Lian Li UNI Fan SL Flex 120mm
Standardized 5-pillar engineering audit, thermal telemetry, verified longevity metrics, and complete technical specification diff.
▲ DOCUMENTED QUIRKS
Composite Score:
4.2
/ 5.0
A robust 28 mm interlocking cooling fan delivering strong 77.34 CFM static pressure performance and dual-mode motherboard or wireless connectivity, tempered slightly by mid-RPM harmonic motor hum and occasional software polling quirks.
★ Recommended Winner
▲ DOCUMENTED QUIRKS
Composite Score:
4.3
/ 5.0
A high-performance modular 120mm fan featuring versatile hybrid wireless/PWM control, durable FDB mechanics, and high-density 52-LED illumination.
⚖️
Mizex Comparative Audit Verdict
The Lian Li UNI Fan SL Flex 120mm achieves the higher Mizex Composite Score (4.3 vs 4.2), leading across 3 of 5 engineering pillars. With an advantage in Engineering & Architecture, Thermal, Power & Acoustics, Real-World Reliability, it represents the stronger technical recommendation.
5-Pillar Engineering Telemetry
Detailed comparison across standardized normalized 1.0 – 5.0 engineering pillars.
Lian Li UNI Fan CL Flex 120mm Normal Blade ARGB
Lian Li UNI Fan SL Flex 120mm
Engineering & Architecture
(30%)
Winner: Lian Li UNI Fan SL Flex 120mm (+0.4)
4.1
4.5
Build Quality & Materials
(20%)
Tie
4.3
4.3
Thermal, Power & Acoustics
(20%)
Winner: Lian Li UNI Fan SL Flex 120mm (+0.2)
4.1
4.3
Real-World Reliability
(20%)
Winner: Lian Li UNI Fan SL Flex 120mm (+0.3)
4.1
4.4
Buyer Value & Upgrades
(10%)
Winner: Lian Li UNI Fan CL Flex 120mm Normal Blade ARGB (+0.4)
4.4
4.0
Lian Li UNI Fan CL Flex 120mm Normal Blade ARGB: Strengths & Caveats
✔ Advantages
- Modular slide-lock interlocking design clusters up to four fans onto a single receiver connection
- Dual control versatility supports both 2.4 GHz L-Wireless software sync and direct 5V ARGB/PWM motherboard headers
- Generous 77.34 CFM airflow and 2.52 mmH2O static pressure backed by an extended 28 mm frame depth
- Dual-zone 24-LED illumination with independent fan blade and frame diffuser control
✖ Documented Caveats
- Noticeable acoustic harmonic resonance and humming in the 1100 to 1350 RPM band
- L-Connect 3 software exhibits occasional sensor-polling RPM spikes without sync lock enabled
- Strict pin alignment requires mounting the FLEX receiver and adapter on the same side of the fan cluster
Lian Li UNI Fan SL Flex 120mm: Strengths & Caveats
✔ Advantages
- Hybrid FLEX Receiver enables operation via motherboard PWM/ARGB headers or wireless L-Connect 3 sync
- Fluid Dynamic Bearing supports true 0 RPM silent idle up to 2000 RPM peak performance
- High-density 52-LED illumination with backward compatibility across SL and CL wireless ecosystems
- Available in both standard and reverse blade orientations for optimized intake presentation
✖ Documented Caveats
- Expanded 28mm frame thickness demands more clearance than standard 25mm fan slots
- Single-fan standalone package does not include the wireless controller
Technical Specification Comparison
Side-by-side spec alignment. Rows highlighted with subtle shading denote differing specifications.
| Specification | Lian Li UNI Fan CL Flex 120mm Normal Blade ARGB | Lian Li UNI Fan SL Flex 120mm |
|---|---|---|
| Brand | Lian Li | Lian Li |
| Model DIFF | UNI Fan CL Flex 120mm Normal Blade ARGB | UNI Fan SL Flex 120mm |
| Dimensions DIFF | 4.72 x 4.88 x 1.10 in (120 x 124 x 28 mm) | 120 x 124.5 x 28 mm (4.72 x 4.90 x 1.10 in) |
| Blade Configuration DIFF | Standard (Normal Blade) | — |
| Fan Speed Range DIFF | 0, 250 - 2100 RPM | — |
| Max Airflow DIFF | 77.34 CFM | — |
| Max Static Pressure DIFF | 2.52 mmH2O | — |
| Acoustic Noise Level DIFF | 29.8 dBA | — |
| Bearing Type | Fluid Dynamic Bearing (FDB) | Fluid Dynamic Bearing (FDB) |
| Chassis Materials DIFF | Polybutylene Terephthalate (PBT) / Polycarbonate (PC) / Aluminum | — |
| Input Power / Current DIFF | 4.68 W / 0.39 A | — |
| Operating Voltage DIFF | DC 6.0 V - 13.2 V | DC 5V - DC 12V |
| LED Illumination DIFF | 24 Addressable RGB LEDs (Dual-Zone) | — |
| Connectivity DIFF | Interlocking Pin Daisy-Chain, 4-Pin PWM, 5V 3-Pin ARGB, 2.4 GHz L-Wireless | — |
| Controller Compatibility DIFF | FLEX Receiver, L-Wireless Controller, Motherboard ARGB/PWM | — |
| Software Integration DIFF | L-Connect 3 / Motherboard BIOS Sync | — |
| Warranty DIFF | 3 Years (Fan and Receiver) | 36 months |
| Frame Material DIFF | — | PBT |
| Fan Speed DIFF | — | 0, 350 - 2000 RPM |
| Airflow DIFF | — | 66.5 CFM (Standard Blade) / 65 CFM (Reverse Blade) |
| Static Pressure DIFF | — | 2.5 mmH2O (Standard Blade) / 2.13 mmH2O (Reverse Blade) |
| Acoustic Noise DIFF | — | 29 dBA (Standard Blade) / 31 dBA (Reverse Blade) |
| Input Power DIFF | — | 7.45 W |
| LED Count DIFF | — | 52 |
| Blade Configurations DIFF | — | Standard Blade, Reverse Blade |
| Included Accessories DIFF | — | FLEX Receiver, 5V 3-Pin ARGB Cable |
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