{"product_id":"noctua-nf-a4x20-5v-pmw-fan","title":"Noctua NF A4x20 5V PMW Fan","description":"\u003cp\u003eThe \u003cstrong\u003eNoctua NF-A4x20 5V PWM\u003c\/strong\u003e is a premium 40 mm cooling fan designed for compact electronics that require strong airflow, high static pressure, and very low noise. Its 5V PWM design makes it particularly well suited as a cooling upgrade or replacement fan for Bitaxe and NerdAxe miners.\u003c\/p\u003e\n\n\u003ch2\u003ePremium Cooling for Bitaxe and NerdAxe Miners\u003c\/h2\u003e\n\n\u003cp\u003eWith a \u003cstrong\u003e40 × 40 × 20 mm\u003c\/strong\u003e form factor, the NF-A4x20 is thicker than a standard 40 × 10 mm fan, allowing it to generate higher static pressure while remaining extremely quiet.\u003c\/p\u003e\n\n\u003cp\u003eThis makes it an excellent choice for pushing air through dense heatsinks found on compact Bitcoin miners, where maintaining consistent airflow is important for stable ASIC temperatures and long term operation.\u003c\/p\u003e\n\n\u003ch3\u003eQuiet and Powerful\u003c\/h3\u003e\n\n\u003cp\u003eDespite its compact size, the NF-A4x20 5V PWM can reach up to \u003cstrong\u003e5000 RPM\u003c\/strong\u003e while producing a maximum noise level of only \u003cstrong\u003e14.9 dB(A)\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eIts maximum airflow is \u003cstrong\u003e9.4 m³\/h (5.53 CFM)\u003c\/strong\u003e, with up to \u003cstrong\u003e2.26 mm H₂O\u003c\/strong\u003e static pressure, providing strong cooling performance without the high pitched noise commonly associated with small high speed fans.\u003c\/p\u003e\n\n\u003ch3\u003ePWM Fan Control\u003c\/h3\u003e\n\n\u003cp\u003eThe integrated \u003cstrong\u003e4-pin PWM connector\u003c\/strong\u003e allows the miner to control fan speed automatically based on cooling demand.\u003c\/p\u003e\n\n\u003cp\u003eFan speed ranges from approximately \u003cstrong\u003e1100 RPM at 20% PWM\u003c\/strong\u003e up to \u003cstrong\u003e5000 RPM\u003c\/strong\u003e at full speed, with support for complete fan stop at 0% PWM.\u003c\/p\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\n\u003cp\u003eThe NF-A4x20 5V PWM uses a standard 40 mm mounting format and is compatible with \u003cstrong\u003eBitaxe and NerdAxe miners using a 5V PWM fan connection\u003c\/strong\u003e, including:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eBitaxe Supra\u003c\/li\u003e\n\u003cli\u003eBitaxe Ultra\u003c\/li\u003e\n\u003cli\u003eBitaxe Hex\u003c\/li\u003e\n\u003cli\u003eBitaxe Gamma\u003c\/li\u003e\n\u003cli\u003eNerdAxe Gamma\u003c\/li\u003e\n\u003cli\u003eNerdAxe Gaia BM1373\u003c\/li\u003e\n\u003cli\u003eOther compatible Bitaxe and NerdAxe models using a 40 mm 5V PWM fan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIt can be used as a replacement for the stock fan or as part of an upgraded cooling setup.\u003c\/p\u003e\n\n\u003ch3\u003eNoctua SSO2 Bearing\u003c\/h3\u003e\n\n\u003cp\u003eThe fan uses Noctua's \u003cstrong\u003eSSO2 bearing system\u003c\/strong\u003e, designed for smooth operation, low mechanical noise, and long service life.\u003c\/p\u003e\n\n\u003cp\u003eNoctua rates the NF-A4x20 5V PWM for an \u003cstrong\u003eMTTF of more than 150,000 hours\u003c\/strong\u003e, making it well suited for miners operating continuously.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003eDimensions: 40 × 40 × 20 mm\u003c\/li\u003e\n\u003cli\u003eRated voltage: 5V\u003c\/li\u003e\n\u003cli\u003eConnector: 4-pin PWM\u003c\/li\u003e\n\u003cli\u003eMaximum speed: 5000 RPM\u003c\/li\u003e\n\u003cli\u003eSpeed at 20% PWM: approximately 1100 RPM\u003c\/li\u003e\n\u003cli\u003eMaximum airflow: 9.4 m³\/h \/ 5.53 CFM\u003c\/li\u003e\n\u003cli\u003eMaximum static pressure: 2.26 mm H₂O\u003c\/li\u003e\n\u003cli\u003eMaximum noise level: 14.9 dB(A)\u003c\/li\u003e\n\u003cli\u003eTypical power consumption: 0.42 W\u003c\/li\u003e\n\u003cli\u003eMaximum power consumption: 0.5 W\u003c\/li\u003e\n\u003cli\u003eMaximum current: 0.1 A\u003c\/li\u003e\n\u003cli\u003eBearing: SSO2\u003c\/li\u003e\n\u003cli\u003eCable length: 20 cm\u003c\/li\u003e\n\u003cli\u003eMounting hole spacing: 32 × 32 mm\u003c\/li\u003e\n\u003cli\u003eMTTF: \u0026gt;150,000 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Voltage Notice\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eThis is the 5V version of the NF-A4x20 and must only be connected to a 5V fan output.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDo not connect the fan directly to a 12V power source, as this can damage the fan.\u003c\/p\u003e\n\n\u003ch3\u003eWhat’s Included\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e1× Noctua NF-A4x20 5V PWM fan\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNot Included\u003c\/h3\u003e\n\n\u003cp\u003eThis product is supplied as the \u003cstrong\u003efan only\u003c\/strong\u003e. Retail accessories normally included with a boxed Noctua fan are not included.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eNo splitter cable\u003c\/li\u003e\n\u003cli\u003eNo extension cable\u003c\/li\u003e\n\u003cli\u003eNo OmniJoin adaptor\u003c\/li\u003e\n\u003cli\u003eNo anti-vibration mounts\u003c\/li\u003e\n\u003cli\u003eNo mounting screws\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Yggdrill","offers":[{"title":"Fan Only","offer_id":58532336435583,"sku":"YGG-000070","price":199.0,"currency_code":"SEK","in_stock":true},{"title":"Splitter Only","offer_id":58532336468351,"sku":"YGG-000071","price":69.0,"currency_code":"SEK","in_stock":true},{"title":"Fan + Splitter","offer_id":58532336501119,"sku":"YGG-000072","price":249.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7353\/2287\/files\/yggdrill-noctua-nf-a4x20-5v-pwm.png?v=1790433015","url":"https:\/\/yggdrill.com\/products\/noctua-nf-a4x20-5v-pmw-fan","provider":"Yggdrill","version":"1.0","type":"link"}