The max rpm is: 2200@ 2200rpm the fan delivers ~ 32 CFM and has 17.7 dB(A)As this fan uses PWM function the min rpm is 450rpm.There is a speed adapter in the scope of delivery in case you like to drop the max rpm. In this case the max rpm would be 1750rpm.

What connector does this have? Nothing listed or shown.

PWM implies 4-pin and indeed it has a 4 pin connector

I'm running an older dell i7 3770. 77 watt. this fan is the same size as my cpu fan. i have an adapter to go from the mb to a pwm fan. will this work?

Most Dell systems use a proprietary 5-pin fan header. In order to make it work you'll either have to modify this header or buy a special adapter to make it work with Dell motherboards

Does it come with Molex adapter / Can I connect it to the power supply instead of to the mother board ?

You can connect it directly to the power supply. It doesn't come with a MOLEX adapter and I'd just pick up a generic one here on Amazon instead of opting for a dedicated 3 or 2 pin fan. Here's why: Today you may want to run it directly off the Power Supply, but down the road you may want to connect it to a 4-pin fan header and then you'll have to buy another fan if you opt for a dedicated 3 pin or 2 pin fan now

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NF-A8 PWM, 4-Pin Premium Quiet Fan (80mm, Brown)

Product ID: 253911873

Details

Brand
Noctua
Cooling method
Fan
Power connector type
4-Pin
Product dimensions
8L x 8W x 2.5H
Voltage
12 Volts

🌀55.5 m³/h airflow

🔇17.7 dB ultra-quiet

⚙️4-pin PWM speed control

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Sold byAmazon ColombiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌀 Elevate your airflow game with whisper-quiet precision!

COMPACT YET POWERFUL - 80mm size fits sleek HTPCs and small form factor builds without compromising airflow (55.5 m³/h).
ADVANCED AERODYNAMICS - Flow Acceleration Channels and AAO frame deliver superior cooling efficiency and smooth operation.
PRECISION PWM CONTROL - Automatic speed adjustment via 4-pin PWM header ensures optimal cooling with minimal noise.
TRUSTED PREMIUM BUILD - SSO2 bearing and fibre-glass reinforced PBT material guarantee durability and long-lasting performance.
WHISPER QUIET COOLING - Experience near-silent airflow at just 17.7 dB, perfect for focused work or serene home setups.

The Noctua NF-A8 PWM is an award-winning 80mm premium fan engineered for ultra-quiet, efficient cooling in compact PC cases and devices. Featuring advanced aerodynamic design, a broad 450-2200rpm speed range with PWM automatic control, and a low-noise adaptor, it delivers powerful airflow at just 17.7 dB noise level. Built with premium materials and SSO2 bearing technology, it’s the elite choice for professionals demanding silent, reliable performance.

Specifications

ASIN	B00NEMG62M
Air Flow Capacity	55.5 Cubic Meters Per Hour
Best Sellers Rank	#12,653 in Computers ( See Top 100 in Computers ) #87 in Computer Case Fans
Brand	Noctua
Brand Name	Noctua
Compatible Devices	Desktop
Compatible devices	Desktop
Cooling Method	Fan
Cooling method	Fan
Customer Reviews	5.0 out of 5 stars 3 Reviews
Global Trade Identification Number	04716123315476, 07038557222364
Item Dimensions L x W x H	8L x 8W x 2.5H centimeters
Item Weight	0.22 Kilograms
Manufacturer	noctua
Material Type	Fibre-glass reinforced PBT
Maximum Rotational Speed	1450 RPM
Model	NF-A8 PWM
Noise Level	17.7 Decibels
Number of Items	1
Part Number	NF-A8 PWM
Power Connector Type	4-Pin
Power connector type	4-Pin
Product dimensions	8L x 8W x 2.5H centimeters
Unit Count	1 Count
Voltage	12 Volts

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