Alternative to Gentle Typhoons?

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Everyone seems to think that the Gentle Typhoons are THE way to go for quiet + effective cooling. However they are 25 mm thick. Here is a 38 mm fan that seems to be quiet.

http://www.sidewindercomputers.com/pa12ulqu.html

And with the higher CPM at the same fan speed can't you run the 38 mm fan at a lower speed than a 25 mm fan?

Just asking. :confused:
 
Huh?
What's wrong with 25mm fans?

The Panoflo is 3dBA louder than the GT AP-15s.
Every 3 dBA is double the amount of sound.

Stupid Imperial/Metric measurements...
 
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A lot of people think that Gentle Typhoons are the best fans out there, but there are loads of alternatives. For example the Akasa Viper:
http://www.akasa.com.tw/update.php?...type=Fans&type_sub=PWM Control&model=AK-FN059
It has 83.63 CFM at 28.9 dB, which is better and more quiet than your 38 mm Panaflo. It is my experience, that 38 mm fans tend to be louder than 25 mm fans. It's not like 38 mm fans are just better than 25 mm fans.
 
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Idef1x said:
Poster above me - ShadowStriker. The specs you post for the Gentle Typhoons are way off. The specs you post are actually cubic meters per hour and not cubic feet per minute. For example a GT 1850 rpm have 58 CFM and not 98 as you state.
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Oops, my bad. Don't understand why people use both >_<
 
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The only thing I've seen that actually competes with the Gentle Typhoon series with accurate specs is the San Ace 9S series.
 
How about Noctua fans? The two that came with my NHU12 are silent, or at least are a lot more quiet than the cooler master fans that came with my case.
 
Teenyman45 said:
How about Noctua fans? The two that came with my NHU12 are silent, or at least are a lot more quiet than the cooler master fans that came with my case.
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Guys, thanks for all the replies. Sometimes it seems that all I read is how the GT's are the ONLY choice, that everything else is inferior, etc., etc. and it's heresy to question that. I just wanted to raise the question. Too bad we don't have a smiley that shows they guy hiding under a chair. That's the one I would use for this question.
 
Teenyman45 said:
How about Noctua fans? The two that came with my NHU12 are silent, or at least are a lot more quiet than the cooler master fans that came with my case.
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Noctua fans are silent but come with a price,their airflow is not really high compare to others.Also their fans are overpriced imo.
 
The following is based upon personal experience and Martin's extensive fan testing (which has spanned years now):

38mm thickness fans seem to offer no advantage until 2000+ RPM. They sound a bit noisier at low RPM, and there exist better 25mm thickness options below 2000 RPM. Delta And Sanyo Denki offer superior 38mm+ thickness High CFM solutions, however (Well, I'm not sure how they compare to the High RPM Scythe GT's, which are available at 3K - 5.4K RPM... but those are screamers).

In terms of measured noise with respect to CFM through a radiator restriction, I haven't seen any 120 or 140mm fan test better than the Scythe GT series.

I personally also like the Scythe GT series, but I understand that it actually doesn't possess the best noise character. Some people find its sound to be annoying, preferring instead technically louder fans. I'm not one of those people (or I got a good batch).

The Noctua P12 is a popular choice, and it's a good fan. Yate Loon SL-Petra fans perform quite well, as do the Arctic F12 and Zalman ZM-F3.

Here are some of Martin's reviews:

http://martinsliquidlab.org/2010/11/04/120mm-fan-testing-on-an-mcr120-radiator-round-6-summary/
http://martinsliquidlab.org/2010/12/16/120mm-fan-testing-round-8/
http://martinsliquidlab.org/2010/12/10/r7-140mm-fan-testing-on-a-hwlabs-sr1-radiator/

There was much more than this, but this is plenty.

Note that he thinks we reach diminishing returns at low RPM (approaching 1000 and below), and that fans are less able to differentiate themselves in that range.

Quote from Rnd 8: "In the end for me, I’m still eyeballing the sub 1000RPM range, and the yate and slipstream SL were smoothest down there. I think the slipstream SL vs GTAP13 or 12 would be a close match..."

I personally think that AP13 (1150RPM) is the lowest RPM GT worth the price. It is a great fan, however, and it allows me slightly more output than a true low-rpm fan would provide.
 
Ive noticed that the thicker the fan the louder they are in general. This is usually because the blade pitch is more aggressive, As a byproduct you get more airflow as well. Same goes for blade count. The fewer blades there are the louder it is and more if flows in conjunction with thickness.

Im sure there are exceptions to this but its a general trend.
 
I find my Noctua P12s are comparable in noise/performance to my Scythe GT, but the GT can go to higher speeds when required. The noctua fans also have really good bearings, you can see it in how they spin, there is no wobble in it like most other fans. I've had a couple which I've been using for 4 years and they're still quiet now like they were back when I got them.

Honestly I wasn't that blown away by the GTs, they're good but I dont know if I'd call them better than other high end fans available.
 
I am thinking about getting the "Scythe Gentle Typhoon 120mm x 25mm Fan - 3000 RPM "

http://www.frozencpu.com/products/1...0_RPM_D1225C12B7AP-29.html?tl=g36c15s60#blank

to put on my Megahalems because my NB multiframe fan seems to be dying (sometimes BIOS shows a measly 500 RPM...)

The question I have is, is it worth it to buy 2 of them and run push/pull? And I noticed this has 3000 RPM but has a rated airflow of 83.0 CFM, while the Aerocool Sharks that Wicked Bass linked have a 1500 RPM but an airflow of 82.6 CFM and are ~10db quieter!


Damn I cant make up my mind
 
Up to you really. I just ordered 4 more sharks and a xspc rx240 to use them on.
There isn't much feedback on them but I took a crap shoot getting them and it turned
Out great in my favor.

If it were me I would get them :)
 
Wicked_Bass said:
Up to you really. I just ordered 4 more sharks and a xspc rx240 to use them on.
There isn't much feedback on them but I took a crap shoot getting them and it turned
Out great in my favor.

If it were me I would get them :)
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Yeah man I couldn't resist those Sharks, they are just too cool. Got myself a red one and a blue one, will run them in push pull on my megahalems... I'm thinking red on top blue on bottom? lol
 
Those 3K RPM Scythe GT's will completely outflow that 1500 RPM fan, and I assure you that no 3K RPM fan of that size will be quiet.

I suspect that at that speed, Delta offers the better solution, but I can't be sure. I wouldn't want a fan of that size spinning at that rate, however. It's just too loud.

http://martinsliquidlab.org/2010/12/10/r7-140mm-fan-testing-on-a-hwlabs-sr1-radiator/ - I linked this above, but it reviews the 140mm Aerocool Shark. The 2nd graph includes the performance of the 1850 RPM scythe GT as well as the high-RPM Delta, both using a 120-140mm adapter. The 120mm fans seem to perform better, objectively, but the Shark seems to be one of the better 140mm options. I'm guessing that the 120mm Shark is decent.

[ame="http://www.youtube.com/watch?v=IXmp7Rvb0e8"]YouTube - &#x202a;R7-140mm Aerocool Shark 140&#x202c;&rlm;[/ame] - Here is a video of the 140mm Shark for sound sampling
 
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I figured 3k RPM might be a bit much. The lower RPM typhoons were sold out, so I went with the 2x 120mm Aerocool Shark 1500RPM in push/pull... I'm only reading good things via google search, so we'll see.
 
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I just got a pair of 3k rpm GTs yesterday, and I am quite happy with the result. Of course they are loud on full blast (and perhaps too loud for some ears) but I don't think they are that much worse than ie. some old Antec Tri Cool I had before. The pressure the GTs provide is great, and I can see a clear difference in my temps.

I listened to some videos on YouTube before buying the GTs, but I think they are a bit misleading, since the actual noise they make are not that bad - especially when you stick them in a case, and not in free air.
 
NukeDukem said:
The question I have is, is it worth it to buy 2 of them and run push/pull? And I noticed this has 3000 RPM but has a rated airflow of 83.0 CFM, while the Aerocool Sharks that Wicked Bass linked have a 1500 RPM but an airflow of 82.6 CFM and are ~10db quieter!
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Never ever trust manufacturer specs for fans. There's no standard testing method so there's no way to compare specs from one manufacture with another.
 
NukeDukem said:
And I noticed this has 3000 RPM but has a rated airflow of 83.0 CFM, while the Aerocool Sharks that Wicked Bass linked have a 1500 RPM but an airflow of 82.6 CFM and are ~10db quieter!
Click to expand...

CFM is not everything. The GTs have a static pressure of more than 5 mm, which is awesome for a 25 mm fan at the given noise level.
 
Depends on what you want to do with the fans. The only time you need good static pressure is if you're using the fans on a heatsink or radiator. If they are simply being used as a case fan, than static pressure is irrelevant.
 
Rudster816 said:
Depends on what you want to do with the fans. The only time you need good static pressure is if you're using the fans on a heatsink or radiator. If they are simply being used as a case fan, than static pressure is irrelevant.
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Yes of course, but since the quoted user was talking about using them in push/pull on a Megahalems, it's not irrelevant.
 
There is a group buy going over at overclock.net for the 2150rpm version of the Gentle Typhoons.

They are the same size and design as the other lower RPM ones (AP13/14/15) but slightly faster and push more CFM.

This model has been made by Nidec for many years but just never imported by Scythe to the USA.

Part of the group buy is over (bare fans with no connectors and only 2 wire) but still going for complete 3 wire fans....

http://www.overclock.net/other-cool...5-official-gentle-typhoon-2150-group-buy.html
 
In my setup, no fan is an enemy. No fan is my friend. I will give the Sharks their chance.
 
I think the first thing people need to realize about fans is there is not magical setup out there that will net you amazing airflow and indomitable silence. You can not have something that shifts a lot of air without keeping it silent; the more air you move, the noisier it's going to be. So what separates the GTs from the plethora of fans out there? The motor combined with the fan blade design. Even at full speed the fan is quieter than many cheaper fans that run at lower speeds and the blade design generates great pressure which is extremely important for heatsinks and radiators. These two factors are what make GTs so damn good. Sure there are great alternatives out there, but they are usually far too overpriced for my liking. (i.e. Noctua and/or Noiseblocker)

The only thing that annoys me with Noctua fans is that their renown silence is mostly due in part to their low operating speeds. Caveat emptor. Also, people arguing with manufacture specs makes me chuckle. Never ever trust them.
 
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