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Black single-tower CPU cooler with four copper heat pipes and a 120 mm RGB fan

Phanteks

Phanteks PH-TC12ST4_DBK01 Polar ST4 CPU cooler

SKU CH-8NAD-TX88M MPN PH-TC12ST4_DBK01

A single-tower air cooler with four direct-contact heat pipes and a 120 mm D-RGB fan rated for 235 W TDP

  • Fan size120 mm
  • Supported CPU socketsAMD Socket AM4 / AMD Socket AM5 / Intel LGA 1150 / Intel LGA
  • Bearing designHydraulic Bearing
  • TDP235 W
  • Rotational speed400 to 2000 +/- 10% RPM
  • Airflow rate84.26 CFM

Model PH-TC12ST4_DBK01

  • Four heat pipes touch the CPU directly for efficient heat transfer
  • 120 mm fan runs 400 to 2000 RPM delivering 84.26 CFM airflow
  • Hydraulic bearing keeps noise to 35.7 dBA at full speed
  • 5 mm height fits most cases without blocking memory slots
  • Supports Intel LGA 1851, 1700, 1200 and AMD AM5, AM4 sockets

Polar ST4 cooler for mainstream CPUs

The Phanteks Polar ST4 is a single-tower air cooler built around four sintered powder copper heat pipes that make direct contact with the CPU. A 120 mm M25 D-RGB fan spins between 400 and 2000 RPM, pushing 84.26 CFM at a maximum of 35.7 dBA. The assembly stands 154.5 mm tall and weighs 1.6 lbs, rated to dissipate 235 W TDP.

Suits builders wanting quiet RGB cooling without

The slim 120 x 50 mm heatsink footprint clears tall memory modules on AM4, AM5, LGA 1200, 1700 and 1851 platforms. Hydraulic-bearing fan and 2.67 mm H₂O static pressure keep airflow steady through dense fins. Buyers needing higher thermal headroom for heavy overclocks or compact cases limited to low-profile coolers should look elsewhere.

Straightforward steel mounting kit fits Intel

The included back-plate and spring-loaded screws secure the cooler in minutes using a standard cross-head screwdriver. Apply paste, align the four heat-pipe bases, tighten diagonally, then connect the 4-pin PWM and 3-pin ARGB headers. The only common snag is forgetting to remove the protective film from the copper base before installation.

How it compares

Measured against everything we stock in CPU Coolers & Heatsink Fans, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 80% of the 1,559 comparable items (median $19.99).
Fan size 120 mm
Higher than about 80% of the 812 comparable items (median 80 mm).

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Specifications

Product
Brand namePhanteks
Model namePolar ST4
Part numberPH-TC12ST4_DBK01
Product colorBlack
Product typeFan & Heatsinks
Performance
Rotational speed400 to 2000 +/- 10% RPM
Airflow rate84.26 CFM
Static pressure2.67 mm H2O
Processor
TDP235 W
Power
Power input connector4 Pin
Size & build
Fan size120 mm
Bearing designHydraulic Bearing
Cooler materialAluminum & Copper
Heatsink dimensions120 × 50 × 154.5 mm
Product weight1.6 lb (0.73 kg)
Shipping weight0.91 kg
Package size178 × 178 × 127 mm
Compatibility
Supported CPU socketsAMD Socket AM4 / AMD Socket AM5 / Intel LGA 1150 / Intel LGA 1151 / Intel LGA 1155 / Intel LGA 1156 / Intel LGA 1200 / Intel LGA 1700 / Intel LGA 1851
CPU cooler height limit154.5 mm
In the box
In the box1 x Polar ST4-120 heatsink
1 x M25-120 D-RGB Fan
1 x Mounting hardware for all listed sockets
1 x Low noise adapter
1 x PH-NDC thermal compound
1 x Thermal paste spreader
1 x Installation guide
1 x Intel back plate (ABS Plastic) for LGA115X/1200/1700
4 x Fan wire clips
2 x Universal socket bracket
4 x stand-off for LGA1200/AM4/AM5
4 x stand-off for LGA1700
4 x AMD AM4/AM5 screws
4 x Intel LGA115X/1200/1700 screws
Environment & compliance
Operating noise35.7 dBA
More details
LED lightingRGB

Other versions of this model

1 more in the same range

Questions about this item

What motherboard socket must my board have for the Phanteks Polar ST4 to mount?

The cooler supports Intel LGA 1851, 1700, 1200, 1156, 1155, 1151 and 1150, plus AMD AM5 and AM4 sockets.

Will the 154.5 mm tall heatsink clear my existing RAM modules?

The slim single-tower design is built to avoid RAM clearance issues on standard motherboards.

How can I confirm the M25 120 mm fan is running within its 400 to 2000 RPM range after install?

Monitor the 4-pin fan header in BIOS or software; the hydraulic-bearing fan should report speeds between 400 and 2000 RPM.

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