fans 300CFM? Best fan? (edit: 70db, no)

[Guest]

So while I was planning my pc, I just found this fan which I've never heard of and claims to generate 308CFM of airflow (which is somewhat insane), is this just the best fan that nobody talks about? (this is twice as much airflow as Noctua's best fan to give an idea)

 

here's the fan (at the top) https://pcpartpicker.com/products/case-fan/#sort=-cfm&page=1

Edited September 13, 2021 by Guest

[Guest]

is there a massive catch or something? I'm genuinely curious

[TheSLSAMG]

The problem is that it's extremely loud (70dB versus an NF-F12 at 22.4dB) and is a 38mm thick fan (most standard fans are 25mm thick, with some like EK's Meltemi being 38mm.) Fans like that one can be useful for certain applications such as servers where sound isn't important, but not for your average desktop PC.

[WhitetailAni]

2 minutes ago, Finnegan1616 said:

is there a massive catch or something? I'm genuinely curious

They're LOUD.

Like, 2 Shop-Vacs in one room loud.

[Dedayog]

Think it may need authenticating, as this 252CFM fan is $60.  So 308CFM for $30 is in the too good to be true arena for me...

 

https://www.frozencpu.com/products/8147/fan-500/Delta_Mega_Fast_120mm_x_38mm_Fan_-_252_CFM_-_Bare_Lead_PFB1212UHE-F00_No_RPM.html?tl=g36c435s1109&id=vWscz99c

 

 

[Guest]

1 minute ago, TheSLSAMG said:

The problem is that it's extremely loud (70dB versus an NF-F12 at 22.4dB) and is a 38mm thick fan (most standard fans are 25mm thick, with some like EK's Meltemi being 38mm.) Fans like that one can be useful for certain applications such as servers where sound isn't important, but not for your average desktop PC.

isn't it only 70db at peak, wouldn't it be significantly lower at 150CFM (noctua-level performance)

 

Just now, Dedayog said:

Think it may need authenticating, as this 252CFM fan is $60.  So 308CFM for $30 is in the too good to be true arena for me...

 

https://www.frozencpu.com/products/8147/fan-500/Delta_Mega_Fast_120mm_x_38mm_Fan_-_252_CFM_-_Bare_Lead_PFB1212UHE-F00_No_RPM.html?tl=g36c435s1109&id=vWscz99c

 

 

that's why I came to ask

[Guest]

7 minutes ago, FakeKGB said:

They're LOUD.

Like, 2 Shop-Vacs in one room loud.

yikes

[Guest]

just remembered db is an exponential system, so iirc, doesn't that make 70db 1,000x more than 40? Now that I think of it, that is crazy loud, my goodness, thanks again

[TheSLSAMG]

11 minutes ago, Finnegan1616 said:

isn't it only 70db at peak, wouldn't it be significantly lower at 150CFM (noctua-level performance)

It would only be 70dB at peak RPM, yes. I would imagine they're still quite loud even at lower RPMs though, so if the performance (in CFM) and fan speed are linear (which I don't know if they are), 150CFM would still be at 2600RPM for a 140mm fan. That would probably still be very loud.

Surprisingly enough, someone actually bought them and put them in their machine (the video has a single fan running at max speed):

 

[CT854]

Extremely loud, and spinning so fast the sheer angular momentum generated makes it hard to maneuver.

 

The second one isn't so much a problem as it is interesting... but it being loud? It is. Extremely.

 

I have an 80mm Delta fan operating to cool a machine at my workplace because the internal fan died and it uses a proprietary fan header (it's a specialized piece of equipment whose service contract is based in England... and is probably expired). The only reason we use it is because it works, and because literally every other machine around it generates about as much noise so it's not really a drawback. Yes, it pushes hundreds of CFM, but it sounds like it's about to lift off for space. You do not want these in your gaming rig, unless you REALLY don't care about noise.

 

Yes, you can ramp down the RPM to make it less noisy... but at that point? Just get a Noctua fan. Or an Arctic fan.

[Guest]

3 minutes ago, TheSLSAMG said:

It would only be 70dB at peak RPM, yes. I would imagine they're still quite loud even at lower RPMs though, so if the performance (in CFM) and fan speed are linear (which I don't know if they are), 150CFM would still be at 2600RPM for a 140mm fan. That would probably still be very loud.

Surprisingly enough, someone actually bought them and put them in their machine (the video has a single fan running at max speed):

 

 

2 minutes ago, CT854 said:

Extremely loud, and spinning so fast the sheer angular momentum generated makes it hard to maneuver.

 

The second one isn't so much a problem as it is interesting... but it being loud? It is. Extremely.

 

I have an 80mm Delta fan operating to cool a machine at my workplace because the internal fan died and it uses a proprietary fan header (it's a specialized piece of equipment whose service contract is based in England... and is probably expired). The only reason we use it is because it works, and because literally every other machine around it generates about as much noise so it's not really a drawback. Yes, it pushes hundreds of CFM, but it sounds like it's about to lift off for space. You do not want these in your gaming rig, unless you REALLY don't care about noise.

 

Yes, you can ramp down the RPM to make it less noisy... but at that point? Just get a Noctua fan. Or an Arctic fan.

so what do you think?

A14 3000? 2000?

[Somerandomtechyboi]

I have a thicc server fan that looking at the power draw is around ~16w but only 12w if its connected to a regular 1a fan header (1.3a power draw)

 

Boy it is really loud, used it in the attempt of bios ocing a p4 to 5.6ghz on a cheap 92mm aircooler, it worked but it was really loud, i can hear it from outside my room even

 

Ive tried hooking it up to 5v and the airflow is actually decent but its abit slow (just jammed some wire on the fan connector to a molex connector)

 

 

Just please dont buy them unless you have a boost converter or something like that, theyll be noisy as hell, otheriwse if you are looking for a dirt cheap pressure optimized fan then sure go ahead, pretty decent option

 

If you want a cheap decent airflow/pressure optimized fan then go for an arctic p12, rivals some noctua fans and a third of the price

[TheSLSAMG]

Just now, Finnegan1616 said:

 

so what do you think?

A14 3000? 2000?

I have EK Furious Vardar 3000RPM 120mm fans and I never really use them above ~2000RPM because of the noise. If I were buying iPPC A14s, I'd probably just go for the 2000RPM versions.

That being said, I'd probably just go for a normal A14 Chromax over both of them. Also like @Somerandomtechyboi mentioned, Arctic make some great fans that aren't too expensive.

[Guest]

you think it's worth dropping 30% of the airflow (150-100) to cut the noise down by about 50x from 40db (about the same as a refrigerator) to 25db? (a quiet whisper)

[WoodenMarker]

6 hours ago, Finnegan1616 said:

you think it's worth dropping 30% of the airflow (150-100) to cut the noise down by about 50x from 40db (about the same as a refrigerator) to 25db? (a quiet whisper)

It's up to you what is quiet enough. If you just want adequate or good cooling at low noise, there are plenty of fans specifically designed for that and they aren't the B-Gears B-Blaster. 

[freeagent]

I used to have a Meshify C full of thick fans, but only about 115cfm, and that was loud.. 70db is serious business. So is 300CFM lol.

[thrasher_565]

https://www.amazon.ca/dp/B093ZJXY52/?coliid=I1VA9QI7GNU6NX&colid=1FAOHYDQQPCKN&psc=1&ref_=lv_ov_lig_dp_it

[Mice-stro]

On 9/13/2021 at 1:29 PM, TheSLSAMG said:

It would only be 70dB at peak RPM, yes. I would imagine they're still quite loud even at lower RPMs though, so if the performance (in CFM) and fan speed are linear (which I don't know if they are), 150CFM would still be at 2600RPM for a 140mm fan. That would probably still be very loud.

Surprisingly enough, someone actually bought them and put them in their machine (the video has a single fan running at max speed):

 

I am that person, they never really go over 5%

my keyboard is louder than my fans, and my computer is basically a white noise machine because the tone is so low.

 

DO NOTE, I had to get a fan splitter that drew power from the psu to add the second fan, you can only run ONE off of motherboard headers, any more and it will just disable the excess. (other fans can run simultaneously)

Edited September 27, 2021 by Mice-stro
notes

[Guest]

If you guys are going air cooling, at least invest in actual air flow. I mean a few hundred CFM is cute and all, but come on. If you're going big and loud, go big and load then! XD

 

Somewhere between 05' and 08' >