Noctua NF-A14x25 G2 PWM Sx2-PP Dual 140mm Fan Set - Quiet Push-Pull

In this review the Noctua NF-A14x25 G2 PWM Sx2-PP is presented as a dedicated dual fan set aimed at builders who need quiet, reliable cooling for radiators or case intakes and exhausts. The biggest reason to buy is simple: two premium 140x25mm fans tuned to avoid acoustic interaction deliver excellent airflow and remarkably low noise for push-pull or side-by-side configurations. The set includes the mounting accessories and adaptors needed to integrate both fans into a water cooling loop or chassis without hunting for cables or vibration parts.

Key Features

• Dual fan set: Two matched NF-A14x25 G2 PWM fans are supplied for immediate push-pull or side-by-side installation on a 280mm radiator or case openings.
• Offset speeds: The fans are deliberately slightly off-set in speed by about +/- 25 rpm to reduce resonance and unwanted acoustic interaction when both run together.
• Advanced impeller and frame: The Progressive-Bend impeller with winglets, Centrifugal Turbulator and Flow Acceleration Channels improve airflow efficiency and reduce turbulence across the blades.
• High-grade construction: Sterrox LCP material and ultra-tight tip clearance produce a rigid, low-vibration rotor that sustains performance under load.
• Complete accessory pack: Anti-vibration mounts, gaskets for radiators, fan screws, LNAs, extension cables and a y-cable are included to simplify installation and reduce noise transmission.
• Reliable bearing and safety: Premium SSO2 bearing with long MTTF and protections against reverse polarity, over voltage and over current provide durable, safe operation.

Who It's For

The set is ideal for PC builders running dual-fan 280mm radiators, users who want matched intake and exhaust fans with minimal noise, and enthusiasts who value component longevity and precise airflow. It suits both custom water cooling and high-performance air-cooled systems where two fans operate in close proximity.

Buyers who need RGB lighting or ultra-high static pressure for very dense radiators may prefer different models tailored to those priorities. Also, users with extremely constrained budgets might opt for single fans rather than a premium dual set with accessories.

Pros & Cons

Pros

• Excellent quiet operation and airflow, matching customer feedback about low noise and strong performance.
• Thoughtful accessory bundle makes push-pull installation straightforward and improves sealing on radiators.
• Offset rpm tuning reduces acoustic interaction when two fans run side by side, a practical benefit for dual setups.
• Premium materials and SSO2 bearing offer long service life and reliable performance under continuous use.

Cons

• Not aimed at users seeking RGB lighting or decorative features; design is strictly functional and neutral in color.
• Higher-end engineering and accessories make this a premium option that costs more than basic single fans.

Specifications

Fan model	NF-A14x25 G2 PWM (two fans)
Size	140x25 mm
Configuration	Dual fan set for push-pull and side-by-side use
Included accessories	Anti-vibration mounts, gaskets, fan screws, LNAs, extension cables, y-cable
Bearing	Premium SSO2 bearing (long MTTF)
Safety & protection	Protected versus reverse polarity, over voltage and over current

Our Verdict

The NF-A14x25 G2 PWM Sx2-PP dual set is a smart purchase for builders who prioritize quiet, efficient cooling in dual-fan arrangements; the offset rpm strategy and robust accessories make installation and day-to-day use worry-free. While it does not cater to RGB or low-cost markets, its engineering and included parts deliver strong value for anyone who needs premium push-pull or side-by-side performance.

Frequently Asked Questions

Can these fans be run from a single motherboard header?
Yes, a y-cable is included so both fans can share one PWM header while maintaining synchronized control.

Do the fans come with vibration dampening for radiators?
Yes, the pack contains anti-vibration mounts and anti-vibration gaskets to improve sealing and reduce transmitted vibration on radiators.

Are these fans protected against electrical faults?
Yes, they include protections against reverse polarity, over voltage and over current to safeguard the fans and the system.