be quiet!
be quiet! Silent Wings 4 120mm
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Best Case Fans · head-to-head
A sourced, side-by-side comparison. Lian Li UNI FAN TL 140 is cheaper at $36. Every spec and price links to its source.
be quiet!
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Lian Li
$36
The Lian Li UNI FAN TL 140 wins 1 of the 1 specs we compare head to head; the other wins 0.
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The numbers that decide it, drawn to scale — longer bar wins, the accent bar is the stronger figure.
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | — | $36 |
| Brand | be quiet! | Lian Li |
| Released | — | — |
| Fan size (mm) | 120 | 140 |
| Thickness (mm) | 25 | 28 |
| Max airflow (CFM) | 48.7 | 103.9 |
| Max static pressure mm h2 o | 1.79 | 2.34 |
| Max speed (rpm) | 1600 | 1800 |
| Min speed (rpm) | — | 200 |
| Max noise dba | 18.9 | 29 |
| Bearing type | fluid-dynamic | fluid-dynamic |
| Connector type | 3-pin-dc | proprietary |
| Lighting | none | argb |
| Mtbf hours | 300000 | — |
| Weight grams | 190 | — |
Sources — be quiet! Silent Wings 4 120mm: bequiet.com (verified 2026-07-11). Lian Li UNI FAN TL 140: lian-li.com (verified 2026-07-11).
Where the two actually differ on the specs we track (8 of 12). Matching specs are omitted.
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
No sourced tester review yet.
Only one whitelisted tester covered it: Tom's Hardware's hands-on of the UNI FAN TL line, mostly the LCD variant, with no cooling or noise testing. It praises daisy-chain wiring that cuts cable clutter but flags six-pin PCIe power and being unable to mix LCD and non-LCD fans in one chain. Exact TL 140 lab tests fall outside the whitelist. (1 sourced review.)
Praised: Daisy-chain Uni Fan cabling drastically reduces the number of wires to route and hide when installing several fans.
Flagged: Controller box requires a six-pin PCIe power connector (plus SATA for stability), hard to spare in GPU-heavy builds; LCD and non-LCD TL fans cannot be mixed on the same daisy-chain to the controller box.