High Airflow fans VS High Static Pressure fans-The basic understanding of PC cooling fans 

Thank you.

Although that's the best analogy of common examples, to be more accurate: Fan #1 (High Airflow) ...can move air with more speed Fan #2 (High Static Pressure) ...can move air with more force. So generally, while Fan #1 can move the air faster, Fan #2 can move it faster _through a filter_ ...or radiator, etc. ...Fan #2 does this by generating more pressure than #1 is able to, which forces the air thru tight spaces (aka restrictions) more effectively.

Carmel Pule' True! I studied aerospace engineering in university and did an internship in a turbo engine factory. To build up crazy amount of pressure at the High-pressure compressor zone, they even coated the inner tube with graphite to act as dry lubricant. Allowing the blade of the rotor to touch against the wall, forcing high pressurized air to enter combustion chamber. Also, there are stator blades in between each rotor blades. The stator blades have a aerodynamic cross section and are placed in a specific pitch. Thus, decreasing the velocity of the airflow to drastically increase pressure.

Ok smartasses, I just came here to buy a fan. Not a jetplane!

The actual reasons go a lot deeper than that but this is a pretty good simplification. With a jet engine, all stages are designed to handle air at much higher density than helicopter blades. This is how they can get so much thrust in such a small form factor. To be able to "grip" that much air, a high disc load is required, lots of surface in contact with the air. Putting all that force onto fewer blades would stress the blades way more, limiting how fast you could run the turbine on top of lowering the efficiency. Sadly, its a mess or a lot of effects and factors playing into the final specifications, but the basic ideas are quite intuitive. With a helicopter, its mostly about efficiency. Look up disc load if youre interested. Distributing the weight of the helicopter onto fewer, larger blades has a big efficiency advantage, although some particularly heavy helicopters will end up needing more than two blades to support the weight. Its similar for drones.

Thanks🙏

@Laurent 👍

@@TaoMStudio ⚠️ God has said in the Quran: 🔵 { O mankind, worship your Lord, who created you and those before you, that you may become righteous - ( 2:21 ) 🔴 [He] who made for you the earth a bed [spread out] and the sky a ceiling and sent down from the sky, rain and brought forth thereby fruits as provision for you. So do not attribute to Allah equals while you know [that there is nothing similar to Him]. ( 2:22 ) 🔵 And if you are in doubt about what We have sent down upon Our Servant [Muhammad], then produce a surah the like thereof and call upon your witnesses other than Allah, if you should be truthful. ( 2:23 ) 🔴 But if you do not - and you will never be able to - then fear the Fire, whose fuel is men and stones, prepared for the disbelievers.( 2:24 ) 🔵 And give good tidings to those who believe and do righteous deeds that they will have gardens [in Paradise] beneath which rivers flow. Whenever they are provided with a provision of fruit therefrom, they will say, "This is what we were provided with before." And it is given to them in likeness. And they will have therein purified spouses, and they will abide therein eternally. ( 2:25 ) ⚠️ Quran

Hi, FM54, you can reverse the fan on the cooler. It is interesting to know the efficiency of doing so.

@Rom3 Hi, the grey one is indeed a bit louder when rpm goes higher due to the design. It is designed to move large amount the air. The brown one is designed for moving air in a confined space(high static pressure fan for that) due to the design. In my opinion, the brown one is better option overall for modern PC build due to people require better performance on air flow and acoustic. Hope this helps.

@Lit27 👍

Hi, it is all down to your situation. Currently, I have 2 Noctua high static pressure fans as front intake on my Fractal Design Meshify C with form dust filters, and the same fan as exhaust fan. 2 more fans on CUP cooler. The build is very quiet. Hope this helps.

@One Buzz your setup is fine. no need to change.

Tao M Studio alright thanks

Glad it helped

Airflow fans for the case and static pressure fans for the cooler or radiator.

@@jackarolax5770 And in tight cases (like mini-itx), pull fan on CPU heatsink can actually be better than push. I saw a good 5c decrease on both CPU and GPU just by making a CPU fan into a pull instead of push (A noctua one just like in the video), which is also right up against a low pressure exhaust fan, which creates some kind of magic, probably because the CPU fan gets exhausted immediately rather than spreading out through the back of the fins after being pushed through, which also helps to pull air more evenly from the rest of the case, right through the heatsink. It might be warmer air going through the heatsink, but since the flow is straight to the exhaust (less than an inch away), it overall improves the airflow in the entire case. The extra space of not having a fan in push position in a tight case, also gives room for air to flow from other components.

Hi, it also depends on your psu. I would go for a high efficiency psu, so fan won't spin until it reach certain load. You also want it to be quite so spin at low rpm. Please read the specs on the fan/s you are choosing. Hope this helps.

@@TaoMStudio it's an 80 gold certified xfx psu . The reason for the mod is that the original fan started emitting some crackl sound like . So I was thinking maybe I could upgrade the psu with an quality fan . BTW the psu fan has only 3 wires .

HI, there is no right and wrong answer here. For the balance of quiet and efficiency, I would go with low spinning fan. The 3 pins it has on the psu, I am assuming that the fan will be spinning constantly. (aka no pwm)

Yes

@Erick Avila yes

What if my exhaust is pointing at some obstruction (like a wall)? In that circumstance wouldn't a static pressure fan do better?

Or what if my exhaust is going through an expandable tube? The tube creates some resistance. Wouldn't a static pressure fan be more helpful there than and airflow being used to exhaust?

Hizenbird Doesnt matter. Air moves just fine.

Even it blocked, you should keep using dynamic pressure fan as the more blades in static pressure fan is intended for "locking" air from reverse direction.

Pertamax7 yah nyasar kesini

@@lkahfi saya kan sedikit sedikit mau upgrade ke noctua om

Maybe I was trying to put all my thought together when explaining lol

It ok. But you can use script next time.

Are you 6 years old or what

@@Sbinott0 5 years old, but etero!

@@privacyprivacy8206 complimenti

your statement is non sense

@@privacyprivacy8206 you’re gay 😢