Question 1

I'm confused on what the difference between the non-focused flow SSO2 fans are and the focused flow ones, any help?

Accepted Answer

The NF-A14 is a Static Pressure Fan. Static pressure is the force the air can pushed out of the fan. High air flow is a measurement of cubic feet per minute of air the fan can move at its peak.Usually a High static pressure fan will have a High CFM also. The reasons to get a High static pressure fan is if you need to blow air through a radiator/CPU cooler or even Pull air through a screen filter. This are where you need the pressure.  Unlike, say a rear exhaust fan, where nothing obstructs the airflow.  This fan will be good for any placement you decide on in your case as it does move a ton of air no matter what.  Just make sure you have it plugged into something that controls the speed based on the heat and not just running at 100% speed all the time as it will be loud at 3K RPM and almost silent at 1K or below.Also the NF-F14 has more airflow than the NF-F12.

Question 2

Do these come with a Y-Cable?

Accepted Answer

No. Y-cables need to be purchased separately.

Question 3

Can you use an ULNA on this Fans? At what RPMS they will run with it at full load?

Accepted Answer

These fans draw considerably more current than the non-commercial fans.  I don't know the current handling capacity of the ULNA you are considering but, if it is one from Noctua's other fans, I would worry about its reliability.  The fan is designed to be controlled by PWM and the minimum speed it can run at in that environment is about 1300 RPM (40-42% PWM).  Wide open the fan runs at 2900-3000 RPM.  These fans are designed for maximum air flow and, while they are pretty mechanically silent, the air flow will generate some noise - especially if you have a filter in front of the fan.

Question 4

How loud is this thing / which model is quietist?

Accepted Answer

Doesn't serm load to me .  I've got 2 in my server but i also have less hearing & tolerate my sever.  I've never been told too loud, & you can throttle it if needed.  Happy about cooling of it.

ASIN	B00KFCRF1A
Best Sellers Rank	#64,723 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #338 in Case Fans
Brand Name	Noctua
Compatible Devices	High-Performance Computer, Industrial Equipment, Server
Cooling Method	Air
Country of Origin	China
Customer Reviews	4.7 4.7 out of 5 stars (851)
Global Trade Identification Number	04716123315452
Item Weight	195 Grams
Manufacturer	Noctua
Material Type	Polybutylene Terephthalate
Max Rotational Speed	1500 RPM
Model Number	NF-A14 iPPC-3000 PWM
Noise Level	41.3 Decibels
Number of Items	1
Number of Packs	1
Part Number	NF-A14 iPPC-3000 PWM
Power Connector Type	4-Pin
UPC	842431014412 808114327767 804067727944 801947310715 804904196162 809395327460
Unit Count	1.0 Count
Voltage	12 Volts
Warranty Description	Noctua India 6 Year Warranty

Noctua Fan NF-A14 iPPC-3000 PWM 140x140x25mm 4Pin SSO2 Bearing A-Series Blade Retail

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