I want it to be quiet, but with excellent air flow.
Does not happen.
The higher the airflow - the more noise there is. Since air alone, while moving, creates a noise. E.g go out on a windy day and you'll sure hear wind blowing.
Which fan do you think would be the best solution for me?
There is a way to obtain quietness with good airflow, but it will be going to cost for you.
To get the best possible airflow with the least amount of noise, idea is to install as many fans in your case as possible. Preferably 140mm rather than 120mm since 140mm fan moves more air and does that more quietly than it's (same spec) 120mm counterpart.
While installing 5x to 7x fans in your PC may look like that you'd get extremely loud noise out of your PC, it's actually vice-versa. The trick is that the more fans you have inside the case, the less each fan has to work to maintain the airflow and the less noise fans produce.
And that is also a main reason why i have 7x high-end case fans in my Skylake and Haswell builds (Corsair ML Pro LED and NZXT AER140 RGB). Mostly 140mm but few 120mm as well. Full specs with pics in my sig. Since i have that many case fans, i can keep all of my case fans spinning between 800 - 1100 RPM and thanks to this, my PCs are very quiet while still having proper airflow inside my full-tower ATX cases.
Now, 5000D AF fan support is:
front: 3x 120mm or 2x 140mm
top: 3x 120mm or 2x 140mm
rear: 1x 120mm
side: 3x 120mm
Before going forward, i'd need to know:
* what size fans you already have
* where the fans are installed
* what make/model the fans are (for optimal performance, you may need to replace the fans you already have, if they are poor performing ones)
* do you have an AIO?
* if you do have an AIO, what the rad size is and where the rad is mounted?
But if you don't want to fully optimize the airflow in your PC and instead are just looking 120mm fan with high airflow, then;
Noctua NF-S12A PWM chromax.black.swap,
specs:
https://noctua.at/en/products/fan/nf-s12a-pwm-chromax-black-swap
pcpp:
https://pcpartpicker.com/product/CK...33-cfm-120mm-fan-nf-s12a-pwm-chromaxblackswap
On full 1200 RPM, it produces only 17.8 dB(A) and provides 63.27 CFM, IF you
do not have any restrictions in airflow path. Since NF-S12A PWM fan is airflow fan and it has poor static pressure of 1.19 mmH2O. Meaning it is weak in pushing/pulling air through restrictions (e.g case fan grille/mesh). While in reality, actual airflow will be less than what specs say. Perhaps ~40 CFM or so.
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