Aurora R10, fan upgrade options

I guess there are a lot of previous discussions so I will only add something never discussed here. 

1. The radiator fan has an rpm range 800-4000. My assumption is you need at least 2000 rpm fan to avoid bios error ( and it is not the only criteria to meet bios requirements)

2. This forum only discussed ML120pro that can avoid triggering BIOS error, but there could be some better alternatives! ML120pro is relatively louder compared to Noctua A12-25 (only got reports that it works on R10, not R11/12) or Be Quiet! Wing 2. 

3. The front chassis fan could have a much wider range of selection since it rarely throws an error code. You can opt for higher CFM or lower noise level depending on your need

Also some trivial things that you may not aware:  the widely criticized stock radiator fan comes from NIDEC, which is a premium vendor supplying high-end server class fans. It may not be quiet but performance and reliability should be better than any retail fans you can buy from the market  

Noctua fans are your go to here.  NOCTUA 120mm NF-A12x25 PWM

Is this the same fan? 

Noctua NF-A12x25 PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)

https://amzn.to/3ivEKR3

Also has anyone tried this fan for the case fan? 
That seems to be the intended use of that fan. 

Noctua NF-S12A PWM, Premium Quiet Fan, 4-Pin (120mm, Brown)

https://amzn.to/3iAoNsU

Thank you for your comments. 
I did notice the radiator fan this morning as I took it out to photograph it and understand it better. 

What stood out is it is 147 CFM. 

That is really close to the Air cooled top fan which is 148.9 CFM.

I get the impression those are powerful fans. 
I did not look deeply, yet I did not see any Noctua fans that match that including their industrial line. 
I appreciate you mentioning the RPM of the fan. 
It would be interesting to know about the actual specs of the fan like acoustics. 

I took the chassis case fan out to photograph it, yet the fan did not have a sticker saying what it is? Does anyone know what it is? 

I wanted to add some additional details….
AIR COOLED TOP FAN:
AVC Model DATA1225B2G

DC 12 volts 1.02 Amps

PS02

Ball Bearing

7M0F5:A00

148.9 CFM

4 Pin Connector.

LIQUID COOLED RADIATOR FAN:

Nidec Model 35502

P/N B35502-35DEL7

PP749-A02 0Z25G UB

DC 12 volts

147CFM min.

Max 1.54 Amps MAX.

4 Pin Connector.

https://noctua.at/en/nf-a12x25-performance-comparison-to-nf-f12-and-nf-s12a

If you can afford it, the A is genuinely impressive.

Interesting. On Amazon ( B07657VBQQ ) it says it's for low-impedance applications. I take that too mean, it's more of a case fan than a radiator fan?
Is it that whole static pressure vs airflow thing?

I've noticed there are two versions, a 3- and a 4-pin, the latter being more expensive. And it comes in nicer colours, not that that matters in an AW case.

I think impedance means resistance - resistance to airflow. 
So a smooth properly sized duct would offer very little resistance. 
A complicated computer case with a lot of turns, screens and protuberances would have a  higher resistance. Is the inside of case “aerodynamic” so to speak?

The R10 case is unique in design. I wonder if the community thinks of that case as normal resistance or high or low or… 

Nexus gives a bad review of airflow.

https://youtu.be/8ulhFi5N2hc

"Hilariously Bad Alienware R10 Ryzen PC"

That is the same graphic that made me wonder which is the best case fan vs radiator. I like that the graphic explains things well. I guess I am wondering if the Noctua fans are way under powered for this case. Or if we need two Noctua to each one stock fan. Perhaps like an extra fan on the door or hard drive area or the like. 

I did not watch that whole video but watched quite a bit of it. Did he ever get to where he understood the ventilation of the case? 

From these graphics we can see the intended ventilation of the case. 

Quite a bit of that is dedicated to the power supply both on the side and back. 

. 

As per the Noctua website: 

1. Performance and application-type considerations for 120mm fans (airflow vs static pressure): In the 120mm range, Noctua offers the NF-A12x25 that provides superior performance in all applications and models such as the NF-F12 and NF-S12A or NF-P12 redux and NF-S12B redux that are focused solutions for either airflow or pressure-demanding applications. See this guide for further explanations. Note that there is no distinction between airflow and pressure-focused models in all other sizes. Except for the NF-F12, NF-P12 and NF-S12 lines, all other Noctua fans are designed to provide optimal results in both types of applications. In particular, Noctua’s A-series models are universal solutions that are excellent both as case fans and on coolers and radiators.

So, in summary...

For a water cooled R10 (R11, R12):

a Noctua NF-F12 PWM for the radiator and two NF-S12A PWM in front?

do they all have to be 4 pin? Will they throw BIOS errors?

There is so much information, so many posts here that the trees are getting lost in the forest.

My concern is that the Noctua is about a third the CFM of the stock radiator fan and half the RPM. 
I have not heard the specs of the case fan yet. 

I added some of the specs of the Noctua fan and stock fan three times and it disappeared each time? 
I am new on the forum - is that being moderated out? 
I listed the RPM and CFM.