BEST Fans made today?

[Judaeus Apella]

Ok guys, spill it. Whats the BEST possible fan you can get that combines high cmf and the lowest possible noise for that high cmf? Even if its AC or DC, I dont really care. Common, share! None of these dinky fans that only do 110cmf and below. Im talking like 130 and up! I like that 150cmf Delta..... but the Deltas have a few issues. They're loud, and if you try and tame them with a controller, then they make a loud machanical noise. I think these are meant for large server stations and industrial use where noise is expected.

[craig588]

That can't be done, air movement creates turbulence and it will always make noise as it hits the fins of a heatsinks.

I have even purchased high end electric motors with essentially no vibrations and then attached specially balenced fan hubs to their shaft and they still produced very little noise, but the second I put it next to a condenser there was large amounts of noise.

[thegreek]

Whats the BEST possible fan you can get that combines high cmf and the lowest possible noise for that high cmf?

That my friend is called a blower.

[Judaeus Apella]

Blower? You mean like a slot fan? I don't understand.....

Please explain further. :)

[STEvil]

blowers make more pressure than cfm.

If you space the fan away from what it is cooling then you can cut down a lot of the noise often.

EDIT

Like this http://www.xtremesystems.org/forums/showthread.php?p=682712#post682712

[Judaeus Apella]

Ok.... then tell me this. Is there a fan that does around 140 or more that doesn't make that loud machine noise when you try and tame it with a controller?

Also, Im not talking about fans mounted on components. These are fans on the case, thats all.

[STEvil]

Not that I know of, under 172mm..

[dimasdw]

i found this
Sanyo Denki 109P1412M101
140x140x38mm
1900rpm
38dB(A)
117CFM
http://www2.ko-soku.co.jp/sales/fan/sanyo/109p1412m101.jpg
more info click (http://sanyodb.colle.co.jp/product_db_e/coolingfan/dcfan/cooling_dcfan.html)

[Judaeus Apella]

Hmmmm.... looks good. Lets do a little math.

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 52.5 dBA = 2.704

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 53.0 dBA = ~2.865

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 38dBA = ~3.079

Ooooooo..... so close. Nice fan though! Although, a little big for my taste. Common guys, lets keep looking!

The quest for the ultimate fan continues!

[dimasdw]

Hmmmm.... looks good. Lets do a little math.

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 52.5 dBA = 2.704

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 53.0 dBA = ~2.865

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 38dBA = ~3.079

Ooooooo..... so close. Nice fan though! Although, a little big for my taste. Common guys, lets keep looking!

The quest for the ultimate fan continues!

hey where this calculation come from?
:confused:

[FallenAngel]

I've found this 120mm fan but 'cos is in german, I don't know how much CFM does, they say it does 126m3 /h (CFM??) here's the link (http://www.blacknoise.de/shop/de_DE/produkt/id_is_70767_and_NB-UltraSilentFan_SX2_Blue_Rev_20.html) and his specs (http://www.blacknoise.de/shop/de_DE/produkt/id_is_70767_and_technische_beschreibung_is_true_an d_NB-UltraSilentFan_SX2_Blue_Rev_20.html) in german.

EDIT: I've found it in english here (http://www.blacknoise.de/shop/en_EN/produkt/id_is_70767_and_NB-UltraSilentFan_SX2_Blue_Rev_20.html), sorry it does only 40CFM to 70CFM, anyway there is another one (http://www.blacknoise.de/shop/en_EN/produkt/id_is_71174_and_NB-UltraSilentFan-SX2Pro_Blacksilent.html) it does 64CFM but only 26dBA, perhaps it's not what you are searching but I really like them

[Ad Rock]

Sanyo/Denki 120 mm fans are proboly the best combination of CFM and dB. I believe their 120mm models move about 100 cfm at 33ish dB's.

[Judaeus Apella]

Your killin me guys! Post power hungry fans that make children cry and would push your PC if you mounted it on a skateboard! j/k Still, lets see some powerful fans, like ones that do more than 130cfm!

[craig588]

You could buy a 2 foot fan from home depot and use it as the side of the case like I have done. Usually those large fans are rated in excess of 3000 CFM and usually are quieter than deltas.

[MaxxxRacer]

angel, those fans are great for quiet case fans, but as for radiators go they are not very good. they are low pressure fans...

if your just using them for case fans to keep air moving around they are an excelent choice. you probably would not even need to fan control them.

[FallenAngel]

I see, so for someone that don't like noise as myself the best for a rad is like 'Ad Rock' said, 'cos 33dBA for me is already loud

[MaxxxRacer]

well the denkis at 12volts are too loud. but once you turn them down they are nice and quiet and still push more air than the 25mm fans.

[Butcher_]

Hmmmm.... looks good. Lets do a little math.

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 52.5 dBA = 2.704

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 53.0 dBA = ~2.865

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 38dBA = ~3.079

Ooooooo..... so close. Nice fan though! Although, a little big for my taste. Common guys, lets keep looking!

The quest for the ultimate fan continues!
It doesn't work like that - dB is not a linear scale. dB is logarithmic - 40dB is 10 times more powerful than 30dB, however it sounds twice as loud due to the way the human ear works. To compare fans you first need to convert dB to a loudness figure, this is is simply 2^(dB/10). So 30dB is 2^3 = 8, 40dB is 2^4 = 16 and so on.

Using this the correct numbers are:

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 2^(52.5/10) = 3.73

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 2^(53.0/10) = 3.833

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 2^(38.0/10) = 8.40

As you can see the Sanyo Denki wins by long way.

[saaya]

delta 120mm wfb 1212 hh

dont know if theyre THE best, but they are great! they can go from completely silent with ~30-40cfm with 5v to moderable noise with 100cfm and 12v :)

[Judaeus Apella]

And just where exactly do you buy one of these?

[Kobalt]

I see, so for someone that don't like noise as myself the best for a rad is like 'Ad Rock' said, 'cos 33dBA for me is already loud

25dba for me is loud.

[isp]

on paper I'm impressed with Silenx 120mm 14dBa fan...

supposedly 58cfm @ 14dBa

...makes me wonder if those numbers are embellished at all... ;)

[Butcher_]

You consider 25dBA loud and run raptors? ok...

[Ad Rock]

on paper I'm impressed with Silenx 120mm 14dBa fan...

supposedly 58cfm @ 14dBa

...makes me wonder if those numbers are embellished at all... ;)

They must of been measuring those dB levels from 20 feet, because there is no way a fan could move that much air at that low of level.

[Kobalt]

You consider 25dBA loud and run raptors? ok...

yep...my computer is pretty loud with even so called 21dba fans. I guess its because of the resistance. Raptors arent that bad...its just a whine. also i wear headphones when i use my computer and you can talk right next to me an i wont hear

[RAINFIRE]

You could buy a 2 foot fan from home depot and use it as the side of the case like I have done. Usually those large fans are rated in excess of 3000 CFM and usually are quieter than deltas.

ROTFLMAO!

[STEvil]

http://www.mpja.com/productview.asp?product=15010+FN

Got 2 of those, pretty quiet @ 12v. Silent @ 8v.

Almost grabbed two DV 6200's.. they were $30 each.

http://www.papst.de/english/products_luefter_dcdiagonal01.html

[isp]

silverstone makes an adjustable one...

17-44dBa and it goes up to I believe 103CFM. That's not too bad is it? You could just turn it up when you needed it and keep it dead silent when you're just cruising in windows I suppose.

[Judaeus Apella]

Im leaning more towards 120mm fans STEvil, but if your interested in 170mm x 150mm, this place carries one: http://www.frozencpu.com/fan-88.html

Unfortunately all they have for it is a 150mm to 80mm adaptor...... um... ok? I understand someone putting it on a cpu...kinda...... but why in the hell don't they carry a 150mm to 120mm adaptor? I mean... it only makes sense. Its only one or two sizes away. It would make more sence to mount a 150mm over a 120mm dock.... than an 80mm dock! You loose a lot of your air flow and its gonna be loud as hell. Might as well try forcing it to blow through a 40mm fan dock, LOL.

I like the 127mm fan on that site though, is that sold on any US websites? This one:
http://www.papst.de/pdf_dat_e/DV52gb.pdf

[FallenAngel]

What's the difference between AC or DC ?

[STEvil]

Alternating Current or Direct Current.

Your PSU feeds Direct Current (+3.3v, +5v, +12v) to the components inside the case. The PSU is fed from the wall (either 110v or 220v Alternating Current).

The short explenation between them is AC is short pulses, DC is not pulsed.

[dimasdw]

the AC fan get power from wall ,not from PSU

[Judaeus Apella]

One time I accidently hooked a DC fan to an AC current a long time ago, it worked (badly) but it buzzed, LOL.

[Butcher_]

http://www.mpja.com/productview.asp?product=15010+FN

Got 2 of those, pretty quiet @ 12v. Silent @ 8v.

Almost grabbed two DV 6200's.. they were $30 each.

http://www.papst.de/english/products_luefter_dcdiagonal01.html
63dB at full speed? Ouch! I thought my 55dB 172x150 fan was bad. :p

BTW anything blowing over about 80CFM will have a reasonable amount of air noise, so complete silence isn't possible without having low airflow.

[craig588]

ROTFLMAO!


CFM != noise
RPM + turbulence = noise

[extremecorvette]

Two 172mm 185CFM 12v 14 watts, with the fan controler I would say it's around 35dba, with both at full 45dba

http://www.public.iastate.edu/~nknause/Case1.jpg

http://www.public.iastate.edu/~nknause/Case2.jpg

[Judaeus Apella]

Nice set up ya got there. I was actually looking at the 120mm drill hole cutters, and man those were expensive as it is. Wonder how much the one you used for that cost!

[FallenAngel]

@extremecorvette
Can you confirm that is only 35dB, 'cos at that dim. it rocks and hard

[Butcher_]

Nice set up ya got there. I was actually looking at the 120mm drill hole cutters, and man those were expensive as it is. Wonder how much the one you used for that cost!
You can do big holes with a pair of tin snips and a file. ;)

[extremecorvette]

Nice set up ya got there. I was actually looking at the 120mm drill hole cutters, and man those were expensive as it is. Wonder how much the one you used for that cost!

Just drill a 1/2" hole and use a hand held reciprocating saw to cut the hole out. If the hole is not shaped right use a file to shape the hole.

The fans cost me $85.00 for them both.

[extremecorvette]

You can do big holes with a pair of tin snips and a file. ;)

The saw is much better, just make sure you get a blade for metal, not wood.

[Butcher_]

I got lucky with mine, £5 (~$9) for one rated to 235cfm.

Yeah I have a reciprocating saw, with metal blades. ;)

[extremecorvette]

I got lucky with mine, £5 (~$9) for one rated to 235cfm.

Yeah I have a reciprocating saw, with metal blades. ;)

I had two that where rated for 265cfm but there where way to much dba and each was rated at 23 watts for 12v so I went and bought these two fans. The 265 fans even with the fan controler where around 45-50 dba,

[Judaeus Apella]

Like I mentioned above, this one below is also a great fan..... although its 170x150. :(

http://www.frozencpu.com/fan-88.html

[empyrean]

blowers make more pressure than cfm.

If you space the fan away from what it is cooling then you can cut down a lot of the noise often.

EDIT

Like this http://www.xtremesystems.org/forums/showthread.php?p=682712#post682712

Nice STEvil... I just copied your method using an 80mm Panaflo with a broken blade (so I broke it out and used the housing) with my Volcano 12 HSF and it's working like a charm... sucking air out, it got rid of some of of the high-pitched whine at max RPM, and my temps have dropped about the same as yours did.

Hot glue guns are your friends! :devil:

[pudds]

Ive got a 120mm delta 192CFM 59db, i use a thermaltake pci bracket fan controller and i don't notice any mechanical sounds when changing speeds, controller gives me choice of high/medium/low.

[Waxman]

I have here an Enermax 120mm fan.

94 cfm's @ 2300 rpm = 30db's! :D

It's a 120x120x25 mm fan and it comes with a small fan controller! :banana:

[Butcher_]

I had two that where rated for 265cfm but there where way to much dba and each was rated at 23 watts for 12v so I went and bought these two fans. The 265 fans even with the fan controler where around 45-50 dba,
Mine's a 24V it's pretty quiet at anything below about 15V, the roar at 24V is insane though.

[extremecorvette]

I have to find a fan for a Thermalright SLK-900, and the largest that will fit on it is a 92mm, what 92mm fan has high CFM's but a dba around 35?

[blinky]

I have to find a fan for a Thermalright SLK-900, and the largest that will fit on it is a 92mm, what 92mm fan has high CFM's but a dba around 35?

i love these fans :)http://www.sidewindercomputers.com/sanyodenki92mm.html

[Waxman]

Check this one out!!!


http://www.sidewindercomputers.com/92clearulwit1.html


I had one!!!

It's a really good fan!!

Low: 1800 RPM, .13A, 1.56W, 47.34 CFM, 28.0 dB
Medium: 2300 RPM, .20A, 2.4W, 52.25 CFM, 32.6 dB
High: 2800 RPM, .28A, 3.36W, 64.15 CFM, 34.3 dB

[extremecorvette]

What do you think about this fan, it ultra low dba only 21dba with 52cfm.

http://www.maxcooler.com/noname307.html

[Waxman]

I've seen one of those at a friends house!

The 55 cfm doesn't seem "real"!!!!!! :stick:

It's really quiet but I compared it with my panaflo's 55cfm @ 35db's and that one is considerably weaker! :stick:

But it's almost SILENT!!!!

You'll be better of with the 92mm that I posted! :toast:

[total_assault]

Hmmmm.... looks good. Lets do a little math.

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 52.5 dBA = 2.704

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 53.0 dBA = ~2.865

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 38dBA = ~3.079

Ooooooo..... so close. Nice fan though! Although, a little big for my taste. Common guys, lets keep looking!

The quest for the ultimate fan continues!

Nice fan rating system, the higher the result the better the fan is cfm per dba

[extremecorvette]

I have here an Enermax 120mm fan.

94 cfm's @ 2300 rpm = 30db's! :D

It's a 120x120x25 mm fan and it comes with a small fan controller! :banana:

Can you make a 120mm fan fit on the SLK-900?

[AH^DK]

I have a 120x120x38mm Sunon fan for 220v lying around somewhere, it's about 55DBA, but it moves ALOT of CFM.

[Sentential]

I personalyl prefer my tri-blade Delta.

http://www.sidewindercomputers.com/de92trblhisp.html

[humeyboy]

The best fans in world are easily SILENTX and now avail in neon with mobo sence wires to for a change.

http://kustompcs.co.uk/acatalog/Kustom_PCs_Shop_Case_Quiet_Fans_72.html

[STEvil]

SilenX are rebadged, same with the PSU's.

[humeyboy]

So. who makes silentx fans cause in reviews they beat all for cfm/db ratio, i not care if made in china solongs they do as they claim. :)

[STEvil]

Look like NMB to me, but thats just a guess.

[simplyadvanced]

http://www.comairrotron.co.uk/ac_family.asp?FamilyID=52

i'm going to get 2-3... they are about 30-40db (produce a low humming noise)

http://www.comairrotron.co.uk/dc_family.asp?FamilyID=38

230cfm anyone?

[tinker77]

SilenX are rebadged, same with the PSU's.

I was thinking of getting some silenx led fans....but, can you ellaborate a bit more on that?

Anyone else used these fans??

[FallenAngel]

I dont want this fan for me, but isn't what you all are searching?

http://www.cooltechnica.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=Delta-WFB1212HH

[Judaeus Apella]

What I'd like to know is if anyone online sells high cfm crossflow fans! I just found this though, looks interesting although not very powerful:

http://www.frozencpu.com/hdc-23.html

Thats got to be the best dba I've ever seen on a 100cfm anything! I wonder what a higher powered one can do...

[fareastgq]

http://sanyodb.colle.co.jp/pdf/dc-sanace120g_e.pdf

That's the best fan imo, I'll be getting some of those soon :)

[Peen]

I have some fans, I dont know what they are but are from japan. They came off $250,000 printing press from my dads business (out of business, thats why I have) they use 110v AC power, and are 120mm. I'm really trying to figure out what they are. They say Flowmax and are made in japan, and I have 3-4 of them. These things are insane, and the bearings are awesome if u spin the fan it seriously spins for like a minute before it stops. They are made out of aluminum or something also, so very strong

they came off a Noritsu printing press I think

[0range]

3 blade delta fans are really good and quite...

[UnreaL]

Hmmmm.... looks good. Lets do a little math.

Delta 120x38mm EFB1212SHE (Triple Blade)

141.96CFM ÷ 52.5 dBA = 2.704

Delta 120x38mm FFB1212VHE

151.85 CFM ÷ 53.0 dBA = ~2.865

Sanyo Denki 140x140x38mm 109P1412M101

117CFM ÷ 38dBA = ~3.079

Ooooooo..... so close. Nice fan though! Although, a little big for my taste. Common guys, lets keep looking!

The quest for the ultimate fan continues!

Firstly dBa is not a standard scale, so for every 3 extra dBa you have double the noise.

Basically means your maths is all wrong.

[Judaeus Apella]

Oops... I posted it backwards, but that’s not the way I do it when Im actually calculating it. Sorry about that!

It's supposed to be the calculation you use for taming fans. With that math, you know how much dba you get per each cfm as you increase its power. Let me correct my self with an example.

Lets look at the fan's fareastgq posted about, the 9SG1212G102. At full power, that fan does 260cfm at 64dba. First you divide 64dba by 260cfm:

64 ÷ 260 = 0.24615384615384615384615384615385

I don't round off the numbers since I use the window's calculator, and just multiply the result of the last calculation. Anyway, that long number represents the noise level in dba for 1cfm with that fan. Let’s say you dame that fan and turn it down fifty percent. All you do is multiply it by half of 260, which is 130. You can also compare it to the maximum CFM of another fan that does just over 100cfm. Let’s compare the dba of the above Sanyo to some other fans by Sunon, Silverstone, Panaflo, and Delta:

Sanyo 9SG1212G102, max 260cfm @ 64dba
1cfm = 0.24615384615384615384615384615385
Siverstone SST-FMC3XW, max 103.44cfm @ 44.0dba
1cfm = 0.038669760247486466
Sunon KD1212PMB1-6A, max 108.00cfm @ 42.0dba
1cfm = 0.3888888888888889
Panaflo FBA12G12U max 114.70cfm @ 45.5dba
1cfm = 0.3966870095902354
Delta FFB1212VHE max 151.85cfm @ 53.0dba
1cfm = 0.3490286466908133
Delta FFB1212EHE max 190.00cfm @ 59.0 dba
1cfm = 0.3105263157894737
Delta TFB1212GHE max 220.01cfm @ 65.0 dba
1cfm = 0.2954411163128949

Looks like we have a new winner! The Sanyo 9SG1212G102 has beat the Delta’s most powerful 12v 120mm fan on the market!

By the way everyone, does anyone know anything about crossflow fans/blowers? I’d really like to find out some information on these! I bet STEvil would know….

[STEvil]

Well, first things first: Your method of calculating noise level per CFM when "taming" a fan is wrong. Quite simply it just cant be done without a meter. Calculating CFM per dB at known values is fine, but noise levels could increase or decrease logarithmically depending on the fan.

A delta that is louder than a panaflow at 12v might be quieter at 5v for example (though not likely).

Crossflow/blowers/squirrel cage/etc are all designed for high pressure. They can deliver CFM, but but get rather noisy when doing so.

[Judaeus Apella]

Ah well... at least I can say I tried!

About the crossflow fans, I posted this above but I dont think you saw it STEvil:

What I'd like to know is if anyone online sells high cfm crossflow fans! I just found this though, looks interesting although not very powerful:

http://www.frozencpu.com/hdc-23.html

Thats got to be the best dba I've ever seen on a 100cfm anything! I wonder what a higher powered one can do...

[STEvil]

almost local PC store in town has those, I really doubt they any more than 30cfm.

[Judaeus Apella]

STEvil, no one is stupid enough to over exaggerate 30cfm to as much as 100cfm....

Did you look at the link?

[Hicks]

Panaflo's are good fans.

[STEvil]

almost local PC store in town has those, I really doubt they any more than 30cfm.

Yes, I did. I'll be in town tomarrow so if they still have them or if i've got time (lot of stops to make) maybe i'll get one just for kicks.

As to bs ratings.. ever heard of "P.M.P.O" ?

[TMM]

Panaflo ftw. I've seen/used a silenx in person and they are crap. I don't doubt their noise rating... but the CFM on the other hand.... they don't move any where near as much air as they are rated for.

[jjcom]

Panaflo fan (80mm), thats what I use on my CPU heatsink. Mind you this is an older model, I pulled it from a 286 computer I got. Best fan I've got, not very loud and still moves lots of air :)

jjcom

[Judaeus Apella]

Man, you'd get a ton of air moving through your system if you had a CM Stacker, and filled up the front with these (http://www.frozencpu.com/hdc-23.html)! Lets see... if you've got a fan controller, multifunction panal, and two burners, that would leave you with... seven 5.25" slots. Thats 700cfm whipping through that bad boy! :slobber:

:toast:

If I was using a stacker, I'd totally do that!