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post #941 of 1019
https://www.youtube.com/watch?v=_QvPslL9WHs

What if you split one of these fans into two and put a radiator between it vs a normal push/radiator/pull ? Would that be significant of an improvement or possibly worse?
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post #942 of 1019
Quote:
Originally Posted by czin125 View Post

https://www.youtube.com/watch?v=_QvPslL9WHs

What if you split one of these fans into two and put a radiator between it vs a normal push/radiator/pull ? Would that be significant of an improvement or possibly worse?

Interesting idea. I'd like to read the results of this as well. The problem is, I don't ever remember seeing a SanAce or Delta fan that was contra-rotating.

I would think whatever rotational energy the output of a fan had would be negated by the time it went thru a heatsink/radiator assembly.
post #943 of 1019
Thread Starter 
What 8051 said. The cooler / radiator straightens the airflow making counter-rotating fan a moot point.
post #944 of 1019
So I'm dealing with some guy (probably a Corsair fanboy) who's saying this:
Quote:
Looking at stats, the highest speed version of the (Scythe) GT is 69 CFM airflow, and 2.9mm H2O static pressure.
In comparison the ML120 is up to 75 CFM, and up to 4.2mm H2O.
So the ML120 is quite a bit better.

Does anyone have any proof that the GTs actually destroying everything else (incl. the ML120)? Possibly you @doyll? smile.gif

EDIT: Never mind, I forgot @Ehume has that 120mm fan review. That's what I used to shoot him down.
Edited by AyyMD - 5/22/17 at 9:53am
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post #945 of 1019
Thread Starter 
Quote:
Originally Posted by AyyMD View Post

So I'm dealing with some guy (probably a Corsair fanboy) who's saying this:
Does anyone have any proof that the GTs actually destroying everything else (incl. the ML120)? Possibly you @doyll? smile.gif

EDIT: Never mind, I forgot @Ehume has that 120mm fan review. That's what I used to shoot him down.
Geggeg of Thermalbench has tested both on radiator at various speeds .. not a lot of difference but ML has a little better mid-range performance. Just remember, sound level has to be 3db or more or less for ears to hear a difference.


http://thermalbench.com/2016/07/12/corsair-ml120-pro-120-mm-fan/3/
post #946 of 1019
I've got 2 thermometers that were used in a medical laboratory for fridges. Both can monitor 2 different temperatures: inside and outside. I've placed both on the top of the case just to be sure they are equally accurate. One of the wire sensors are inside the case hanged from the top to between the front intake and the CPU cooler. The other one is right at the rear exhaust.

Ambient temperature is 26 °C.
Prime95 ran for around 30 minutes.
Max core and package temperature was 83 °C on average, 85 °C max.
The measurements were performed with case closed and fans on auto.

Inside the case (between intake and CPU cooler) temperature is about 1 °C higher then the ambient: 26.7 °C. I find this either extremely good or really odd (seems too good to be true but maybe I have really good airflow).
Exhausted air temperature is 33 °C which I find really low. 50 °C difference between CPU package and exhaust makes me question if the cooler is transferring heat away efficiently.

Here are some pictures in case I wasn't completely clear (In temperature is ambient, Out is case or exhaust temperature):







Do you think these temperatures are perfectly fine or something is suspicious?
    
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post #947 of 1019
Temps on the CPU seem a bit high for whatever the monstrosity of a setup you have there is.

If you put your hand behind the rad, is the air hot? I'm guessing not. You might not have a good thermal paste job or something.
post #948 of 1019
Thread Starter 
Looking at the thermometer readout I see
25.9c & 26.2c in
31..8c & 26.?c out .. can't read the tenths on last one.
The intake temps may be slightly high on top of case. Maybe set one unit in front of intake vents.

The 31.8 is probably about right. There is a lot of airflow through the fins so the air temp coming out of cooler is not a huge amount higher then cooler intake.

I'm assuming this is only CPU load testing, not CPU and GPU ??

if I remember correctly you were having a slow climb for 25-30 minutes to reach equilibrium ?? What do cooler / case exhaust temps do during this time?

7700K is 4.5GHz stock so 4.7GHz is no much OC. How much did you raise voltage?

What are the temps if CPU is running stock?
post #949 of 1019
Quote:
Originally Posted by doyll View Post

Geggeg of Thermalbench has tested both on radiator at various speeds .. not a lot of difference but ML has a little better mid-range performance. Just remember, sound level has to be 3db or more or less for ears to hear a difference.


http://thermalbench.com/2016/07/12/corsair-ml120-pro-120-mm-fan/3/

I can confirm that the ML120's are amazing.

I really like the GTs and the Vardars but a couple weeks ago I bought an ML120 just for the sake of trying and I was amazed. They are extremely quiet and can go down until 280rpm with 0 bearing/clicling noise (Vardars and many other fans including noctuas bother me with their ticking sound at extremely low rpm).

That guy saying that the "GT destroy all the other fans" was clearly a fanboy, just like the Corsair guy who said the ML120's are better just by looking at the specs tongue.gif
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post #950 of 1019
i have ML140´s as case fans behind demcifilters for intake which if i am reading doyll´s post on airflow restriction correctly - is reducing airflow by 35%. does this mean that i should adjust for a more aggressive fan curve to compensate?
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