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Thermalright TL-D12B 120mm PWM fan
Thermalright

Thermalright TL-D12

Expert rating6 / 10

Fan Size:
120mm
Bearing Type:
Rifle
Lighting:
No RGB
Airflow:
40.0 CFM
Static Pressure:
0.9 mmH2O
Max Speed:
1500 RPM
Noise Level:
20.0 dBA
PWM Control:
Yes

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Manufacturer: Thermalright Last updated: 2026-09-12

Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) Review

Thermalright TL-D12 120mm case fan, 40.0 CFM airflow, 0.9 mmH2O static pressure, 1500 RPM max, 20.0 dBA, Rifle bearing, No RGB, PWM control. An ultra-thin 12mm-profile 120mm fan built for small-form-factor cases where standard-depth fans won't fit.

At just 12mm thick — less than half the depth of a standard 25mm case fan — the TL-D12 targets a narrow but real need: SFF cases, low-profile coolers, and tight clearance spots where a normal fan simply doesn't fit. The trade-off for that slim profile is reduced airflow and static pressure compared to full-depth fans, since a thinner blade can't move as much air per rotation.

Why Thickness Matters

A 12mm-thick fan has roughly half the blade surface area of a standard 25mm fan, which directly caps how much air it can move regardless of RPM — the TL-D12 is a solution for clearance-constrained builds, not a way to get standard performance in less space.

Where It's Actually Useful

Common use cases include SFF case side panels with minimal clearance, RAM-height-restricted CPU cooler shrouds, or dual-fan mounting spots that would otherwise only fit one standard-depth fan — situations where a normal 25mm fan is a non-starter.

Comparison to Alternatives

There's no other slim-profile fan in this catalog for a direct comparison; against a standard-depth budget fan like the Thermalright TL-C12C-S, the TL-D12 moves meaningfully less air but fits in spaces the C12C-S physically cannot.

Specifications

Identity and packaging

BrandThermalright
ModelTL-D12

Design

Fan Size120 mm
Bearing TypeRifle
LightingNo RGB

Performance

Static Pressure0.9 mmH2O
Max Speed1500 RPM
Noise Level20.0 dBA
PWM ControlYes

Performance at maximum speed

Airflow40.0 CFM

Market

PositioningBudget
Connector4-pin PWM
ColorsBlack

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Expert rating6 / 10

A niche but genuinely useful option whenever clearance, not performance, is the limiting factor.

Best for

  • SFF cases with tight clearance
  • Low-profile cooler shrouds
  • Dual-fan mounts wanting two slim units instead of one standard fan

Not for

  • Standard-clearance builds (use a 25mm fan for better performance)
  • Radiator duty
  • Maximum-airflow priorities

FAQs

What are the key specifications of the Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM)?

The Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) is a case fan from Thermalright. Key specs: Fan Size 120, Bearing Type Rifle, Lighting No RGB, Airflow 40.0, Static Pressure 0.9.

Will the Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) work with my current setup?

The Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) lists Fan Size is 120. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.

Who is the Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM) best suited to?

It suits sff cases with tight clearance, low-profile cooler shrouds, dual-fan mounts wanting two slim units instead of one standard fan.

What are the drawbacks of the Thermalright TL-D12 (120mm/40.0 CFM/0.9 mmH2O Static Pressure/1500 RPM Max/20.0 dBA/Rifle Bearing/No RGB/PWM)?

It is a poor fit for standard-clearance builds (use a 25mm fan for better performance), radiator duty, maximum-airflow priorities.

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