140 mm Alphacool Apex Stealth metal fan 2500 rpm PWM Hydro bearing (white)

The Alphacool Apex Stealth metal fan is a 140 × 140 × 25 mm cooling component engineered for PC cases and radiators. With a maximum speed of 2500 rpm, PWM control and a hydro (fluid) bearing, this white fan is intended to deliver regulated airflow for system cooling, water-cooling radiators and high-performance builds. The metal construction offers a different aesthetic and thermal inertia compared with standard plastic fans, and the Apex Stealth is sized for standard 140 mm mounting points.

Advantages

Alphacool Apex Stealth combines a high maximum rotational speed with PWM-based speed control for precise airflow management. The hydro bearing reduces mechanical wear and helps maintain quieter operation over extended periods. The metal frame and blades provide a durable feel and a distinctive look while supporting continuous use in demanding cooling setups. Its 140 mm form factor matches common radiator and chassis mounting patterns.

Suitable for

• Case ventilation in mid-tower and full-tower enclosures
• Push/pull configurations on 140 mm water-cooling radiators
• High-performance or overclocked PC builds that require increased airflow
• Systems where a metal-finish fan is desired for aesthetic consistency

When it may not be suitable

The Apex Stealth’s 2500 rpm maximum and metal construction can produce higher acoustic output at top speed compared with lower-speed or specialized low-noise fans, so it may not be ideal for ultra-quiet systems where minimal noise is the priority. Also, its size and mounting pattern require standard 140 mm fan mounts and will not fit smaller 120 mm-only enclosures or cooling brackets.

Key specifications

• Size: 140 × 140 × 25 mm
• Maximum speed: 2500 rpm
• Control: PWM speed control
• Bearing type: Hydro (fluid) bearing
• Color: White
• Frame material: Metal construction

How to use

Mount the fan on any compatible 140 mm chassis or radiator location using screws appropriate for the case or radiator. Connect the fan to a PWM-capable fan header on the motherboard or to a compatible fan controller to enable automatic speed regulation based on system temperature. Ensure airflow direction aligns with your intended intake or exhaust configuration; the side with the frame supports and label typically indicates the exhaust side. Periodically check mounting screws and cable routing and clean the fan blades to maintain performance.

What to consider before purchase

• Verify your case or radiator supports 140 × 25 mm fans and has clearance for a metal-frame fan.
• Confirm you have a PWM-capable header or controller to take advantage of speed regulation.
• Consider acoustic tolerance at high rpm if you plan to run sustained high speeds.
• Check compatibility with push/pull radiator setups if planning dual-fan mounts.

Usage recommendations

For balanced cooling and noise, configure the Alphacool Apex Stealth on PWM control and set fan curves in the motherboard or controller software to increase speed under load. Use the fan in push/pull pairs on radiators for improved thermal performance, and maintain periodic cleaning to prevent dust accumulation that can reduce airflow and increase noise.