Does anyone know if this or the full sized one is quieter? I'm not going to overclock and all I want is a near silent computer.

any cooler noctua makes is quiet - i had that cooler and it left me slightly under-whelmed, and i was thinking it'd be a much better cooler with 4 heatpipes, vs the two it comes with. About 2 weeks later they released the same cooler, slightly taller, with 4 heatpipes - i'd suggest going with that one, fwiw

Can I use liquid metal for this cooler?

I wouldn't. Liquid Metal is for de-lidding and replaces the questionable TIM Intel uses between the CPU core and the lid, not between the lid and a heatsink.

Will this fit in a mini-stx case such as the silverstone vt02?

There is no issue with the size of the cooler itself. Silverstone's VT02 is able to fit a cooler up to 46mm tall, and the NH-L9i stands at about 37mm. However, there could potentially be a compatibility issue with the motherboard as some of its components (capacitors, rear IO, etc.) could prevent the cooler from being installed properly. Some mini- and micro-STX boards are designed primarily with small circular coolers like Intel's stock solution in mind. Keep this in mind.

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NH-L9i

Product ID: 1202724

Details

Air Flow Capacity
57.5 cubic per
Brand
Noctua
Compatible Devices
Desktop
Cooling Method
Air
Material
Copper (base &
Maximum Rotational Speed
2500 rpm

🌀92mm high-efficiency fan

📏37mm ultra-low profile

🔇23.6 dB whisper-quiet noise

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Description

❄️ Cool performance, zero noise – your stealthy PC upgrade awaits!

TRUSTED DURABILITY - Backed by Noctua’s legendary 6-year warranty and proven reliability for Intel Core i3 to i7 CPUs.
WHISPER QUIET COOLING - Optimized NF-A9x14 fan with PWM and Low-Noise Adaptor keeps your system silent under load.
SLEEK COMPACT DESIGN - Only 37mm tall, perfect for HTPCs and ITX builds without sacrificing performance.
EFFORTLESS INSTALLATION - Includes SecuFirm2 mounting and premium NT-H1 thermal paste for hassle-free setup on Intel sockets.
ZERO RAM PC IE INTERFERENCE - 95x95mm footprint ensures no overhang, maximizing compatibility and airflow.

The Noctua NH-L9i is an ultra-compact, low-profile CPU cooler designed for small form factor PCs. With a mere 37mm height and a 92mm PWM-controlled fan, it delivers efficient cooling at whisper-quiet noise levels (23.6 dB). Its 95x95mm footprint avoids RAM and PCIe slot interference, ensuring broad compatibility with Intel LGA115x and LGA1200 sockets. Included are premium thermal paste and an easy-to-install mounting system, all backed by a 6-year warranty, making it the go-to choice for professionals seeking silent, reliable cooling in tight spaces.

Specifications

ASIN	B009VCAJ7W
Air Flow Capacity	57.5 cubic meter per hour
Best Sellers Rank	#102 in Computer CPU Cooling Fans
Brand	Noctua
Brand Name	Noctua
Compatible Devices	Desktop
Cooling Method	Air
Customer Reviews	4.7 out of 5 stars 3,437 Reviews
Global Trade Identification Number	00842431014269, 04716123314875, 07967907179310
Included Components	Item
Item Dimensions L x W x H	3.74"L x 3.74"W x 1.46"H
Item Highlight	Only 37mm Height, ITX SFF Low-Noise Cooling, For LGA1200/1151, 92mm Slim Fan, No RAM or PCIe Overhang, Rich Accessory Kit
Item Weight	443 g
Manufacturer	Noctua
Material Type	Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Maximum Rotational Speed	2500 rpm
Model	NH-L9i
Noise Level	23.6 db
Number of Items	1
Part Number	NH-L9i
Power Connector Type	4-Pin
Product Dimensions	3.74"L x 3.74"W x 1.46"H
UPC	842431014269 731215283291 039281014277 115970979550 739197641290 163120668250 803982961730 872182807933 807320189206 168141422058
Unit Count	1 Count
Voltage	12 volts
Warranty Description	6 year manufacturer’s warranty

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$287

Duties & taxes included

In stock

Sold byAmazon FijiDelivered 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 Fiji.

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