Noctua NF‑A14x25r G2 PWM Sx2‑PP 140 mm Fan Set

The Noctua NF‑A14x25r G2 PWM Sx2‑PP 140 mm Fan Set includes two round‑frame case fans configured for push‑pull operation, precisely speed‑offset to eliminate acoustic beat frequencies and deliver elite cooling performance.

Push‑Pull Dual Set with Precision Acoustic Tuning

Speed‑Offset Fans to Prevent Beat Frequencies

This bundled set pairs two NF‑A14x25r G2 PWM fans with a ±25 RPM offset—one slightly slower (PPA), one faster (PPB)—to avoid unwanted harmonic interference in push‑pull setups, ensuring smooth acoustic performance.

etaPERF™ Motor with NE‑FD6 & SupraTorque™

The motors leverage Noctua’s etaPERF™ design and NE‑FD6 driver IC featuring Smooth Commutation Drive 2 and SupraTorque™ for precise speed control and reliable performance under airflow resistance.

Next‑Gen Aerodynamics & Build

Progressive‑Bend Impeller with Flow Acceleration & Winglets

Each fan includes a Progressive‑Bend impeller with winglets and Flow Acceleration Channels, optimized by a Centrifugal Turbulator hub—delivering superior static pressure and airflow efficiency.

Ultra‑Tight Tip Clearance & Sterrox® LCP Construction

Engineered with just 0.7 mm clearance between blade tips and frame, and crafted from Sterrox® liquid‑crystal polymer, this fan maximizes efficiency and durability even under constrained airflow conditions.

Technical Specifications (Push‑Pull Set of 2)

• Model / SKU: NF‑A14x25r G2 PWM Sx2‑PP
• UPC: 841501110665
• EAN: 9010018100662
• Size: 140 × 140 × 25 mm each
• Mount Spacing: 124.5 × 124.5 mm
• Connector: Dual 4‑pin PWM fans (12 V)
• Max Speed: 1,500 RPM ±10% (each)
• Speed with L.N.A.: ~1,250 RPM
• Airflow: 155.6 m³/h per fan (~127.1 m³/h with L.N.A.)
• Noise Level: 24.8 dB(A) (≈19.7 dB(A) with L.N.A.)
• Static Pressure: 2.56 mm H₂O (~1.3 mm H₂O with L.N.A.)
• Power / Current: ~2.28 W / ~0.19 A
• Bearing: SSO2 with brass shell (>150,000 h MTTF)
• Materials: Sterrox® LCP impeller, AAO frame
• Included Accessories: 2 × PPA & PPB fans, 2 × L.N.A., PWM splitter, extension cable, anti‑vibration mounts, screws

Ideal For

Perfect for dual‑fan push‑pull configurations on high‑performance CPU coolers like the NH‑D15/ D15S or NH‑U14S. The offset configuration minimizes noise artifacts while maximizing heatsink efficiency.

Related Products & Further Information

Explore more case fans, or view the full NF‑A14x25r G2 series via Noctua’s official series page.