Static Pressure and Gentle Typhoon 1850rpm

eagle2508 · 13 Apr 2013 at 17:31

I keep hearing about how important it is to have high static pressure fans when connecting them to a radiator, the Gentle Typhoon 1850rpm is also always mentioned as being one of the the best 120mm fans available.....

According to an official data sheet they have very low static pressure.... So I'm now completely confused.... Or am I missing something?

http://catalog.nidec-servo.com/digital/english/general/pdf/D1225C.pdf

Is it the lower the figure the more static pressure they have? As according to the above data sheet the maximum static pressure they have is: 0.081H20

SirConfused · 13 Apr 2013 at 18:13

From what i've read the quoted figures mean very little because they're not measured in 'real world' situations. The GT's perform very well in real world comparisons but looking at some of the newer fan models like the new corsair's etc you can get some 'better looking' fans which perform just as well.

It's becoming more about personal preference/cosmetics rather than picking that or performance. However I still think a lot of people would recommend GT's over anything else for rads as they still perform incredibly well when undervolted.

JonJ678 · 13 Apr 2013 at 19:39

0.081 inch water is 20 Pa. That sounds like quite a lot for a 25mm fan to me. Why do you believe this to be "very low"?

Noctua's NF-P12 is well respected iirc, and that's rated at 1.68mm water, 16.5Pa. I.e., markedly less than the typhoon.

The 38mm san ace are the best choice I am aware of - and they're rated to 65Pa - but they're leagues ahead of what most people screw to radiators.

eagle2508 · 13 Apr 2013 at 19:57

JonJ678 said:
0.081 inch water is 20 Pa. That sounds like quite a lot for a 25mm fan to me. Why do you believe this to be "very low"?

Noctua's NF-P12 is well respected iirc, and that's rated at 1.68mm water, 16.5Pa. I.e., markedly less than the typhoon.

The 38mm san ace are the best choice I am aware of - and they're rated to 65Pa - but they're leagues ahead of what most people screw to radiators.

You should take a look at these, from the specs and the reviews they are amazing!

http://www.silverstonetek.com/product.php?pid=366&area=en

Silverstone FHP141 3.7 H20 at max speed. 500-2000 rpm 42.8-171CFM 13.4-43.5dBA

I would imagine at full speed they will make your ears bleed but on a fan controller they could be something special

Kei · 13 Apr 2013 at 21:17

You've got the numbers from different measurements. One is mm of H20 the other is inches of H20. They aren't necessarily the highest static pressure available but at like for like noise levels, they probably are the best.

One thing to note with the silverstone fan you've linked to, is that it is a 140x38mm thick. (the scythe is only 120x25mm thick) Don't forget that there are uber fast versions of the gentle typhoons. (AP-29 and such that run up as high as 5400rpm, though they are not quiet by any stretch of the imagination)

dazzerd · 13 Apr 2013 at 21:26

JonJ678 said:
0.081 inch water is 20 Pa. That sounds like quite a lot for a 25mm fan to me. Why do you believe this to be "very low"?

Noctua's NF-P12 is well respected iirc, and that's rated at 1.68mm water, 16.5Pa. I.e., markedly less than the typhoon.

The 38mm san ace are the best choice I am aware of - and they're rated to 65Pa - but they're leagues ahead of what most people screw to radiators.

Yup and they sound horrendous too. I bought 3 a while ago for a fair bit of money and I thought they would bend my rad fins

eagle2508 · 13 Apr 2013 at 21:59

dazzerd said:
Yup and they sound horrendous too. I bought 3 a while ago for a fair bit of money and I thought they would bend my rad fins

Oops, I hold my hands up.... I missed the mm or inch part of the measurement lol won't make that mistake again.

Was it the San Ace fans your talking about?

Why is it so complicated.... I just want to find out which 140mm fans will work best for a push/pull setup using a H110 but can never seem to get a straight answer, either there stupidly loud, low static pressure, too low cfm or too much cfm so will be loud....

My head feels like it'll pop! LOL

Do you think the Silverstone fans will work well if connected to a fan controller
..

ubersonic · 13 Apr 2013 at 22:35

Kei said:
You've got the numbers from different measurements. One is mm of H20 the other is inches of H20.

This, imperial/metric confusion

dazzerd · 13 Apr 2013 at 22:41

eagle2508 said:
Oops, I hold my hands up.... I missed the mm or inch part of the measurement lol won't make that mistake again.

Was it the San Ace fans your talking about?

Why is it so complicated.... I just want to find out which 140mm fans will work best for a push/pull setup using a H110 but can never seem to get a straight answer, either there stupidly loud, low static pressure, too low cfm or too much cfm so will be loud....

My head feels like it'll pop! LOL

Do you think the Silverstone fans will work well if connected to a fan controller
..

They are old school fans. Used to be ran on servers and the like when servers used to run hot. Look up Sanyo Denko, they are the same thing. You can still pick them up from various places if you don't mind noise

ps don't put your fingers in them else you will lose them

dazzerd · 13 Apr 2013 at 22:43

eagle2508 said:
Oops, I hold my hands up.... I missed the mm or inch part of the measurement lol won't make that mistake again.

Was it the San Ace fans your talking about?

Why is it so complicated.... I just want to find out which 140mm fans will work best for a push/pull setup using a H110 but can never seem to get a straight answer, either there stupidly loud, low static pressure, too low cfm or too much cfm so will be loud....

My head feels like it'll pop! LOL

Do you think the Silverstone fans will work well if connected to a fan controller
..

They are old school fans. Used to be ran on servers and the like when servers used to run hot. Look up Sanyo Denko, they are the same thing. You can still pick them up from various places if you don't mind noise

ps don't put your fingers in them else you will lose them

Edit: I notice you need 140mm fans; these are not. Though I believe Swiftech have a 140mm helix fan. Which would be about as good as you will get at that size.

eagle2508 · 13 Apr 2013 at 23:02

What do you think of these.....? As far as I'm aware these are the best stats wise but how they perform in real life I don't know..... There's very few reviews, a few on Youtube but they aren't in English lol

Prolimatech Aluminium Vortex Silver Wings

http://www.overclockers.co.uk/showproduct.php?prodid=FG-007-PL

1600 RPM - 127 CFM - 28 dBA - 1.8 mm H20
1200 RPM - 100 CFM - 20 dBA - 1.37 mm H20
900 RPM - 65 CFM - 15 dBA - 0.9 mm H20

If these aren't any good I'm kinda stuck.... I want to use the Corsair H110 to cool a 3930K but if I can't find the right fans may have to swap to a H100i and go down the Gentle Typhoon route.

dacads · 13 Apr 2013 at 23:14

Scythe GT AP15 not only look good but also perform well

You think people would recommend a rubbish fan?

eagle2508 · 13 Apr 2013 at 23:23

dacads said:
Scythe GT AP15 not only look good but also perform well

You think people would recommend a rubbish fan?

No not at all.... The problem is I want to use a H110 for the benefits of a larger rad so need 140mm fans.... The Scythe GT's are all 120mm :-[ if I was to get the H100i I would no doubt use the Gentle Typhoons.

ubersonic · 13 Apr 2013 at 23:32

Use Typhoons and 140-120 adapter shrouds, the choice of 140mm fans is nowhere near as good as the choice of 120mm ones, plus you get the performance boost of shrouds.

eagle2508 · 13 Apr 2013 at 23:35

Hmmm never thought about that.... Just wonder if it'll all fit in a Corsair 650D, the pull fans will be mounted on the top anyway but with a shroud on the push fans would there be clearance for the mobo?

JonJ678 · 13 Apr 2013 at 23:43

eagle2508 said:
You should take a look at these, from the specs and the reviews they are amazing!

Silverstone FHP141 3.7 H20 at max speed. 500-2000 rpm 42.8-171CFM 13.4-43.5dBA

From the specs, they're a lot worse than the san ace I prefer. 3.7 mm water = 36Pa. About half what the (very, very loud) fan sat next to me claims.

Just get the gentle typhoon. It's widely loved for a reason. The 120mm to 140mm shroud makes sense anyway, it's good to space the fan away from the radiator.

I think this was covered above, "in H20", "mm H20" and "Pa" are all units of pressure - but they don't have a 1:1 ratio. Link.

eagle2508 · 13 Apr 2013 at 23:55

I think your right, its just down to clearance now I think.... I visit to the OCuk showroom is in need to find out if it'll all fit together well!

tipes · 14 Apr 2013 at 12:04

ubersonic said:
Use Typhoons and 140-120 adapter shrouds, the choice of 140mm fans is nowhere near as good as the choice of 120mm ones, plus you get the performance boost of shrouds.

This. AP15 is the way to go IMHO.

Mark

Avenged7Fold · 14 Apr 2013 at 19:03

My personal preference are sp120's or GT's. +1 to using a fan shroud. Your maximum room at the top of the case for a 650D is 73mm's before it starts going over your board. The h110 is 29mm thick, so you can have one set of fans in there and a fair bit of clearance before your motherboard. If you want push/pull, mount the other set externally.

The h110 has moderate FPI so really high SP fans are not vital. The stock fans are 1.64mm-H2O and are 140 ones. So if you want to save yourself the extra cash, these will be fine but if you really want to drop temps by another degree or two get GT's or SP120's with a shroud. I know i said it already but H110 has moderate fin density and very thin as most radiators go, so you will find little improvement when comparing medium static pressure 140 fans and high static pressure 120 fans.

eagle2508 · 14 Apr 2013 at 20:04

Avenged7Fold said:
My personal preference are sp120's or GT's. +1 to using a fan shroud. Your maximum room at the top of the case for a 650D is 73mm's before it starts going over your board. The h110 is 29mm thick, so you can have one set of fans in there and a fair bit of clearance before your motherboard. If you want push/pull, mount the other set externally.

The h110 has moderate FPI so really high SP fans are not vital. The stock fans are 1.64mm-H2O and are 140 ones. So if you want to save yourself the extra cash, these will be fine but if you really want to drop temps by another degree or two get GT's or SP120's with a shroud. I know i said it already but H110 has moderate fin density and very thin as most radiators go, so you will find little improvement when comparing medium static pressure 140 fans and high static pressure 120 fans.

That's really good info, thanks Avenged7Fold.

I think I'll do exactly that, GT 1850rpm fans with shroud on the inside then mount two of the Prolimatech Aluminium Vortex Silver Wings on top externally. Should work well together :-D