Scythe Gentle Typhoon 1850 or Akasa Venom Vipe

w00dy85 · 1 Nov 2011 at 09:11

Kingy1968 said:
What speed and cpu are you running and what are the temps at the moment on idle and load??

I currently have my i5 at 4.3GHz and its max load temp using realtemp is 64 and at idle 27 -30.

I'm still unsure which to get, the noise dose not bother me to much as I game with headphones on.

Sorry it took me so long to reply

Hotwired · 1 Nov 2011 at 09:17

ATIorNvidia said:
GT's don't even have good static pressure. The only reason why they're popular is because of the little amount of noise they make. The AP-15 (1850rpm model) is rated at 20Pa (which is around 2.0mmh20). There are many fans that walk all over these in terms of raw performance, i.e the Scythe S-Flex's.

This.

The noise for the cooling is the only thing that makes them different.

And for that matter the noise they make is higher pitched than usual so it may sound no quieter at all.

A microphone might think its quieter but your ears are not a microphone and they're differently sensitive.

For a given RPM they cool just as well as a standard fan.

For a given RPM they have a lower DB rating.

As for what to get, tbh you have to have them in your rig to know.

I've tried fans and binned fans with NO temperature difference, but the tone of each fan is different and you might prefer the noise fan A makes over fan B.

Kingy1968 · 1 Nov 2011 at 10:04

w00dy85 said:
I currently have my i5 at 4.3GHz and its max load temp using realtemp is 64 and at idle 27 -30.

I'm still unsure which to get, the noise dose not bother me to much as I game with headphones on.

Sorry it took me so long to reply

Ive still got the stock fan on mine and i cant hear it....

As for your temps i cant see nothing wrong with those.....

w00dy85 · 1 Nov 2011 at 10:06

So which fan has the best static pressure?

I found someone saying on the [H]ard|Forum that the GT 1850 static pressure is 2.057mm H20 and Overclockers say the vipers static pressure is 2.98 mm H2O. I looked on the Scythe website and could not find what the static pressure is for the GT.

So dose anyone Know if 2.057mm H20 is right for the GT?

vectisitch · 1 Nov 2011 at 12:26

this is turning into a very interesting thread.i like it keep it coming.i've read somewhere that the noise to the human ear that the gt's make is worse than the vipers

JeffyB · 1 Nov 2011 at 13:20

GentleTyphoon D1225C12B4AP-14, 1450rpm version

from http://atreview.net/en/casefan.html

GoogalyMoogaly · 1 Nov 2011 at 14:03

If noise doesn't bother you what about a Scythe Gentle Typhoon 120mm 5400 RPM?
http://www.overclockers.co.uk/showproduct.php?prodid=FG-032-SY

w00dy85 · 1 Nov 2011 at 14:26

GoogalyMoogaly said:
If noise doesn't bother you what about a Scythe Gentle Typhoon 120mm 5400 RPM?
http://www.overclockers.co.uk/showproduct.php?prodid=FG-032-SY

I did look at that, but I like the idea of 2 fans in a push/pull set up.

Troezar · 1 Nov 2011 at 18:36

I've got some 2150rpm Gentle Typhoons on the way, currently delayed due to far eastern weather! Will be interesting to see how well they work in push pull....

gropingmantis · 1 Nov 2011 at 19:20

I just ordered the Viper and the 1850 GT hopefully arriving tomorrow so will let you all know what I think.

w00dy85 · 1 Nov 2011 at 19:31

gropingmantis said:
I just ordered the Viper and the 1850 GT hopefully arriving tomorrow so will let you all know what I think.

I was just thinking the same thing, I was going to order a GT and see how it compares to my viper on my Antec Kuhler H20 620. A friend has already said he will buy the GT off me, if I'm not happy with it.

GoogalyMoogaly · 1 Nov 2011 at 21:49

This might be of some interest. If you look you can see the "noise-meter" and the "airflow-meter" reading for both fans (sorry to get all technical

)

The Akasa Vipers;

The Gentle Typhoon AP-15 (1850rpm):

Of course different tests may return different results...

ATIorNvidia · 1 Nov 2011 at 22:30

w00dy85 said:
So which fan has the best static pressure?

I found someone saying on the [H]ard|Forum that the GT 1850 static pressure is 2.057mm H20 and Overclockers say the vipers static pressure is 2.98 mm H2O. I looked on the Scythe website and could not find what the static pressure is for the GT.

So dose anyone Know if 2.057mm H20 is right for the GT?

Yes that sounds about right.

GTO656 · 1 Nov 2011 at 22:31

r these really quiet?

Hotwired · 2 Nov 2011 at 04:19

GTO656 said:
r these really quiet?

Listen to the clips two posts before you.

The answer depends on what you call quiet. I don't call either even slightly quiet at full speed.

gropingmantis · 2 Nov 2011 at 07:34

Well in those tests the Viper did much better and seemed (to me) to have a much better tone. The sound of the GT seemed to be quite annoying. I shall see tonight, Royal Mail willing.

Hotwired · 2 Nov 2011 at 07:50

That's the thing.

The microphone thinks the GT is making less noise but its a higher pitched noise than your average fan.

Angel_Rex · 2 Nov 2011 at 12:59

gropingmantis said:
Well in those tests the Viper did much better and seemed (to me) to have a much better tone. The sound of the GT seemed to be quite annoying. I shall see tonight, Royal Mail willing.

I have the GT1450 & akasa apache I'm happy with both but the GT1450 cools my ALC ECO rad better than the apache's at full speed.

So I now use the GT's on the cooler and the 3x apache as case fans (1 side in, 1 top out & 1 front in).

Id be interested in ur findings!

gropingmantis · 2 Nov 2011 at 18:39

Well the fans arrived. There is pretty much nothing between them. The temperatures that I recorded were exactly the same (running IBT), on my AXP-140 using IC Diamond they both achieved a max temp of 52C both running at full speed.
Sound wise it was difficult to tell which I prefer. At max speeds the Viper is louder but the GT is more annoying.

In the end for me it came down to control. The Viper has PWM so it is easier to lower the speed and so make it virtually silent but still get good temps. I am not sure what the GT is like at lower speed because I don't have a fan controller, maybe the annoying whine goes away, I do not know. What I do know is that the Viper can become silent without me having to have a fan controller so that is the one I am going for.

Not a great review but if you dont have a fan controller the Viper seems to be the way to go.

MichaelM · 2 Nov 2011 at 19:22

gropingmantis said:
Well the fans arrived. There is pretty much nothing between them. The temperatures that I recorded were exactly the same (running IBT), on my AXP-140 using IC Diamond they both achieved a max temp of 52C both running at full speed.
Sound wise it was difficult to tell which I prefer. At max speeds the Viper is louder but the GT is more annoying.

In the end for me it came down to control. The Viper has PWM so it is easier to lower the speed and so make it virtually silent but still get good temps. I am not sure what the GT is like at lower speed because I don't have a fan controller, maybe the annoying whine goes away, I do not know. What I do know is that the Viper can become silent without me having to have a fan controller so that is the one I am going for.

Not a great review but if you dont have a fan controller the Viper seems to be the way to go.

I think the viper's noise is just the air rather than the fans mechanics which is why they seem less annoying to the ear.
I've got 6x 120mm and 3x 140mm Vipers but also 3x 1450 GT's that came with the V12 kit but I have not tried out the GT's at all.
From the boxes it says the GT's use a double vibration damper system (coils) while the vipers use a hydrodynamic bearing structure.

I would have also thought that the smaller motor housing of the vipers would make them better for a radiator as well.