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Three slim black 120 mm case fans with 15 mm frames and 4-pin connectors

ARCTIC

ARCTIC P12 Slim PWM PST 3-pack 120 mm 15 mm case fan

SKU CH-WCYA-MFTFV

A 15 mm slim 120 mm PWM fan three-pack delivering 71.53 m³/h airflow and 1.45 mm/H₂O static pressure for tight radiator or heatsink builds

  • Slim 15 mm profile fits tight small-form-factor cases
  • 300–2100 RPM PWM PST range balances silence and peak airflow
  • 45 mm/H₂O static pressure drives air through dense radiators
  • 53 m³/h airflow moves heat from heatsinks efficiently
  • Three fans in one pack simplify multi-point cooling builds

Slim 15 mm 120 mm fan triple pack

This set contains three 120 mm case fans that measure only 15 mm thick, making them suitable for small form factor builds where a standard 25 mm fan will not fit. Each unit uses a 4-pin PWM connector so speed can be regulated by the motherboard. The trio is aimed at builders who need pressure-optimised airflow in tight spaces.

Pressure-optimised blades with PWM sharing

The blade geometry is tuned for high static pressure, rated at 1.45 mm H₂O, so air moves effectively through dense heatsink fins or radiator cores. A 4-pin PWM PST connection allows multiple fans to share a single header and run in sync from 300 to 2100 RPM. Noise stays low at 0.3 sone while delivering 71.53 m³/h of airflow.

Replaces standard 25 mm fans in cramped layouts

This pack upgrades builds that cannot accommodate thicker fans, such as slim tower coolers, compact radiators or mini-ITX chassis with limited clearance. The jump is worthwhile when installation height is the limiting factor and you need coordinated speed control across three positions. It is not for users who require maximum airflow at unrestricted fan depths.

How it compares

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Price $26.99
Pricier than about 64% of the 8,808 comparable items (median $16.99).

Specifications

No published specifications for this item yet.

Questions about this item

What does the 4-pin PWM PST interface cap the fan speed at in practice?

The 4-pin PWM PST connector allows speed control from 300 to 2100 RPM, so the motherboard or controller can run the fan anywhere in that range.

What clearance does the 15 mm slim frame need to fit in a case or on a radiator?

The fan is 120 mm square and only 15 mm thick, so it fits small-form-factor cases and tight radiator stacks where a 25 mm fan would not clear.

How do you install the three fans using the PST sharing cable, and what step is often missed?

Connect the first fan to the motherboard header, then daisy-chain the other two via the PST cables; the step often missed is plugging only the lead fan into the header so all three share one PWM signal.

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