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Black 140mm square case fan with matte finish and 4-pin PWM connector

Corn Electronics

Corn Electronics TL-B14B EXTREM 140mm case fan 2000 RPM

SKU CH-F4Q8-C48EV

140 mm PWM case fan with dual ball bearing, 2000 RPM maximum speed, 110.4 CFM airflow and 3.02 mm H₂O static pressure

  • Fan size140 mm
  • LED lightingNon-LED
  • Product typeCase Fan
  • Product colorBlack

Model w/o PWM

  • 140 mm frame fits standard case mounts
  • 2000 RPM maximum speed moves 110.4 CFM of air
  • 02 mm H₂O static pressure pushes through dense radiators
  • 4 dBA maximum noise keeps acoustics low
  • dual ball bearing and 4-pin PWM give durable, precise control

140mm PWM case fan

The Corn Electronics TL-B14B EXTREM is a 140mm case fan designed for builders who need high static pressure in a standard 25mm frame. It connects via a 4-pin PWM header so the motherboard can regulate speed automatically. The dual ball bearing is intended for long service life in continuous operation. Non-LED black blades keep the appearance neutral inside any chassis.

Sustained-load behaviour

At the maximum 2000 RPM the fan moves 110.4 CFM while generating 3.02 mm H2O of static pressure, figures that hold steady under constant restriction such as dense radiator fins. The dual ball bearing maintains consistent torque without the friction increase that sleeve bearings exhibit over time. Acoustic output peaks at 31.4 dBA when the curve demands full speed, remaining predictable during prolonged thermal loads.

Pre-installation checks

Verify that your case or cooler has 140mm mounting points with 25mm clearance for the frame thickness. Confirm the motherboard or fan controller provides a 4-pin PWM header rated for at least 0.2 A per fan. Ensure cable routing can reach the header without tension on the connector. Builders who need addressable lighting or a different colour scheme should look elsewhere.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $31.99
Pricier than about 78% of the 8,339 comparable items (median $19.99).
Fan size 140 mm
Higher than about 80% of the 1,114 comparable items (median 120 mm).

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Specifications

Product
Product typeCase Fan
Product colorBlack
Size & build
Fan size140 mm
More details
LED lightingNon-LED

Other versions of this model

2 more in the same range

Questions about this item

How loud does the 2000 RPM fan get under full load?

The TL-B14B EXTREM reaches a maximum noise level of 31.4 dBA when running at its top speed of 2000 RPM.

Does my motherboard need a 4-pin PWM header to control this fan?

Yes, the fan uses a 4-pin PWM connector so a compatible motherboard header is required for speed control.

Will the 140 mm frame and 25 mm thickness fit in my older case's fan mounts?

The fan measures 140 mm square and 25 mm thick, matching the standard 140 mm mounting pattern used on most cases.

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