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ARCTIC P12 Pro PST CO 120mm PWM Case Fan 600-3000 RPM 77 CFM 6.9 mmH2O Dual Ball Bearing Continuous Operation Black

Brand:
Arctic Cooling
Arctic P12 Pro PST CO PWM 120mm ACFAN00312A
ARCTIC P12 Pro PST CO 120mm PWM Case Fan 600-3000 RPM 77 CFM 6.9 mmH2O Dual Ball Bearing Continuous Operation Black
€14.05 inc. VAT
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ACFAN00312A
€11.81
€14.05 inc. VAT
Ships from EU stock: 13 item(s)
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Product Code
03:274967
EAN Code
4895265000140
Manufacturer
Arctic Cooling
Quick Specs
Fan Size
120 × 120 × 25 mm
Speed
600–3000 RPM, 0 RPM mode
Airflow / Pressure
77 CFM / 6.9 mmH2O
Bearing
Dual ball, 24/7 use
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ARCTIC P12 Pro PST CO 120 mm PWM Case Fan — Black

120 mm600–3000 RPM6.9 mmH2ODual ball · 24/7

The ARCTIC P12 Pro PST CO is a 120 mm high-pressure PWM fan built for continuous operation, delivering 77 CFM and 6.9 mmH2O for servers, workstations, mining rigs and always-on PCs. Part number ACFAN00312A is the single black version with a dual ball bearing and a PST daisy-chain socket. Typically in stock with fast delivery across Cyprus.

Compatibility Note
Requires 120 mm fan mounts (105 mm hole spacing) and a 4-pin PWM fan header or hub. At 3000 RPM the fan is loud — use a PWM fan curve for desktop use. The PST socket lets fans share a header; keep the total current (0.33 A per fan) within the header rating.

Key Features

 
Continuous operation (CO)
A dual ball bearing replaces the standard fluid bearing, making this version suited to 24/7 operation and higher ambient temperatures.
 
6.9 mmH2O static pressure
Up to 3000 RPM produces 77 CFM (131 m³/h) with very high pressure — ideal for thick radiators, heatsinks and dense server chassis.
 
PST daisy-chain and 0 RPM
A built-in socket chains additional fans from one header, and the fan stops below 5% PWM duty.

Technical Specifications

Identification
Part Number ACFAN00312A
EAN / GTIN 4895265000140
MPN ACFAN00312A
Brand ARCTIC
Model P12 Pro PST CO
UPC 840033402828
Performance
Fan Size 120 × 120 × 25 mm
Speed 600–3000 RPM (PWM); 0 RPM below 5% PWM duty
Airflow 77 CFM (131 m³/h)
Static Pressure 6.9 mmH2O — very high pressure for radiators and dense heatsinks
Noise Level Not listed in the manufacturer spec table
Electrical & Connectivity
Bearing Dual ball bearing — CO (Continuous Operation) version for 24/7 use
Voltage 12 V DC (start voltage 3.3 V DC)
Current 0.33 A
Connector 4-pin PWM plug + 4-pin socket — PST (PWM Sharing Technology) daisy-chain
Cable Length 400 mm + 80 mm daisy-chain cable
Lighting None — non-RGB
Physical & Support
Colour Black
Weight 185 g
Operating Temperature 0–40 °C
Pack Size Single fan
Warranty 6 years (manufacturer)

Frequently Asked Questions

Is the ARCTIC P12 Pro PST CO suitable for 24/7 operation?
Yes. CO stands for Continuous Operation — the dual ball bearing is designed for always-on systems such as servers, NAS, workstations and rendering rigs.
Does the P12 Pro PST CO work with my motherboard?
Yes. It uses a standard 4-pin PWM connector; the PST socket lets you chain another fan so both follow one header's fan curve.
What's the difference between the P12 Pro PST CO and the P12 Pro PST?
Both run 600–3000 RPM with 77 CFM and 6.9 mmH2O. The CO version (ACFAN00312A) uses a dual ball bearing for continuous operation; the standard P12 Pro PST uses a fluid dynamic bearing, which is typically quieter in desktops.
What do I need to know before buying the P12 Pro PST CO?
It is a single black 25 mm fan. At full speed it is loud, and ball bearings can be slightly noisier than FDB at low speed, so choose it for durability rather than silence.
Singular Expert Insight
Pick the P12 Pro PST CO when uptime matters more than absolute silence — for a quiet gaming desktop the standard P12 Pro PST is the better fit. Explore more case fans and cooling solutions.

Buyer's Guide

Buy it if
You run a server, NAS or workstation 24/7 and need a 120 mm fan with 6.9 mmH2O static pressure.
Skip it if
You want the quietest possible desktop fan — the FDB-based P12 Pro PST is better suited.
Also consider
ARCTIC P12 Pro PST (FDB) or ARCTIC P14 Pro PST (ACFAN00314A) for 140 mm mounts.

Features - Arctic Cooling - ACFAN00312A

Colour
black
More Details
Product Code
03:274967
EAN Code
4895265000140
Manufacturer
Arctic Cooling
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