Noctua NF-A4x20 5V PWM Silent Fan (40×20mm) Cooling
5V 4-pin PWM • 5000 RPM • quiet, high-quality cooling for Bitaxe 204 Ultra / 401 Supra / Gamma 600x / 601x
The Noctua NF-A4x20 5V PWM is a premium 40mm fan built for tight spaces, designed to cool ASIC builds efficiently while staying quiet — perfect for Bitaxe rigs running in homes and offices.
- Quiet operation + smooth acoustics
- 4-pin PWM for precise speed control
- Great replacement for cheap/noisy stock 40mm fans
Noctua NF-A4x20 5V PWM — Product details
Upgrade your open-source Bitaxe hardware with the Noctua NF-A4x20 5V PWM silent fan — engineered for compact builds where airflow, acoustics, and long-term reliability matter.
This 40×20mm fan is ideal for Bitaxe 204 Ultra, Bitaxe 401 Supra, and Bitaxe Gamma 600x / 601x series rigs. PWM speed control lets your setup run as quiet as possible while still ramping up when temps rise.
- Quiet operation with premium bearings and aerodynamic design
- 5V 4-pin PWM connector for precise speed control
- Compact 40×20mm for narrow enclosures and small mining builds
- High fan quality + long service life (Noctua SSO2 bearing platform)
Clean acoustics for home/desk setups — reduces harsh fan noise.
4-pin PWM lets you tune cooling vs noise automatically.
Perfect for Bitaxe builds where space is limited.
Improves airflow across ASIC/heatsink area for steadier operation.
- Model
- NF-A4x20 5V PWM (NF-A4x205VPWM)
- Size
- 40×20mm
- Voltage
- 5V
- Connector
- 4-pin PWM
- Speed
- Up to ~5000 RPM
- Recommended for
- Bitaxe 204 / 401 / Gamma 600x / 601x
- Color
- Noctua brown
Checkout
You’re purchasing: 1× Noctua NF-A4x20 5V PWM Silent Fan (40×20mm). Total: $19.99. Express shipping included.
