Would this fan work on asus k31bf. fan really noisy and rattling of late. would i need 3 pin or 4pin if it does fit?

Hi, We are not so sure it will fit into your case, assuming it uses the usual 120mm or 140mm fitting, it should be ok. This cooler requires a 4 pin connection. Hope this helps Thanks, Ebuyer Team

What dimension are the fixing hole centres?

Mounting hole spacing: 71,5x71,5 mm

Does this fan have a flow direction arrow on the case?

Yeah, all fans are the same. They all spin counter clockwise and open side is intake.

I have a Dell Optiplex 9010 with a 5 pin fan, can I use a 5 pin to 4 pin adapter with this fan?

Noctua 12V fans comply with the established specifications for standard PC systems issued by Intel and AMD. Systems from Acer, Apple, Dell, HP, Lenovo or other major brands often deviate from these specifications e.g. by using proprietary fan headers, custom pin-alignments or pin-configurations, different methods of fan speed control, etc. This can lead to compatibility issues when using Noctua fans in systems from said brands. Some of these problems can be avoided with some technical knowledge, but especially BIOS related issues (e.g. errors or shutdowns due to low fan speed) can often not be resolved. As a result, Noctua does not officially support systems from Acer, Apple, Dell, HP, Lenovo or other major brands.

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Noctua NF-R8 redux-1800 PWM, Quiet Fan 80mm

Product ID: 49541282

Details

Air flow capacity
53.3 Cubic Per
Brand
Noctua
Compatible devices
Desktop
Cooling method
Air
Material
Fibre-glass
Maximum rotational speed
1800 RPM

🌀53.3 CFM airflow

🔇17.1 dB(A) ultra-quiet

⚙️1800 RPM PWM control

₱2308

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Description

🌀 Stay cool, stay ahead—silence and power in perfect harmony.

COMPACT YET MIGHTY - 80x80x25mm size fits seamlessly into tight builds without compromising airflow or pressure.
PROVEN RELIABILITY - Backed by over 150,000 hours MTTF and hundreds of thousands of happy users worldwide.
VALUE MEETS QUALITY - Streamlined redux edition delivers Noctua’s award-winning cooling excellence at an irresistible price.
WHISPER QUIET POWER - Experience premium airflow at a barely-there 17.1 dB noise level—your workspace stays cool and calm.
PRECISION PWM CONTROL - Dynamic 4-pin PWM lets your motherboard optimize fan speed for peak performance or silent idling.

The Noctua NF-R8 redux-1800 PWM is a high-performance 80mm cooling fan designed for professional-grade PC and electronics cooling. Featuring a 4-pin PWM connector for automatic speed control up to 1800 RPM, it delivers 53.3 CFM airflow at an ultra-quiet 17.1 dB(A) noise level. Its compact 80x80x25mm size fits versatile setups, backed by a robust 150,000+ hour lifespan and Noctua’s globally recognized quality, making it the go-to choice for silent, efficient cooling.

Specifications

ASIN	B00KF7MVI2
Air Flow Capacity	53.3 Cubic Metres Per Hour
Best Sellers Rank	4,969 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 11 in Electronic Cooling Fans
Brand	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Country Of Origin	China
Customer Reviews	4.8 4.8 out of 5 stars (4,195)
Global Trade Identification Number	00842431012425, 04716123315339
Included Components	Please see product Description for what is included
Item Dimensions L x W x H	8L x 8W x 2.5H centimetres
Item Highlight	High Airflow, Low Noise, 25mm Thick Fan for PC and Electronics Cooling Streamlined Package 1800rpm 4-Pin PWM
Item Type Name	80 mm fan at 1800 rpm
Item Weight	0.3 Pounds
Manufacturer	Noctua
Manufacturer Part Number	NF-R8 redux-1800 PWM
Material	Fibre-glass reinforced PBT
Max Rotational Speed	1800 RPM
Model Number	NF-R8 redux-1800 PWM
Noise Level	17.1 Decibels
Number of Items	1
Number of Packs	1
Power Connector Type	4-Pin
Product Warranty	6 year manufacturer’s warranty
UPC	804904101210 804067218916 842431012425 801940470928 731215273841 809394586615 808112938552
Unit Count	1.0 count
Voltage	12 Volts

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₱2308

Duties & taxes included

In stock

Sold byAmazon PhilippinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Philippines.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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