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Fan choice for Watercool MO-RA 3 420 PRO/LT (18x140mm vs 8x200mm) - Page 5

Poll Results: Which will do better ?

 
  • 50% (1)
    9+9 140mm 2.5cm Thermaltake Riing 14, 1400RPM fan, push-pull
  • 50% (1)
    4+4 200mm 3.0cm Bitfenix Spectre Pro, 900RPM fan, push-pull
2 Total Votes  
post #41 of 76
Thread Starter 
Quote:
Originally Posted by ciarlatano View Post

The blade spacing doesn't change from front to back.
That's not what I wanted to say..... rolleyes.gif
post #42 of 76
Quote:
Originally Posted by ciarlatano View Post

No, but in this case it is Corsair that started the whole "static pressure" and "airflow" tags on fans along with an incorrect mental image of what each should supposedly look like. The fact that both static and airflow capabilities are both of importance in every application is another matter......
Exactly!
Use smoke and mirrors to manipulate the truth. Make 'scientific' data prove whatever they want, regardless of how it really works in application.

I have seen and worked with airflow test systems, but what is required to do accurately test fans is extremely sophisticated.
I'm sure you know exactly what I'm saying below, but for the benefit of others;
To control the air pressure into and out of the fan being tested there is at least one chamber with a fan and flow control being used to balance the pressure in so the both the intake and exhaust sides of the fan equal.
Problem with this is that in actual use the intake and exhaust sides of the fan are not the same pressure, because the simple fact is when a fan turns it's blades pull (suck) air in and push (blow) air out.
This simple act causes the intake air to be lower in pressure than the exhaust side.
But that's not all. In order to measure and determine the volume of air flow we have to measure the speed the air is flowing .. and the air all has to be flowing the same speed and direction. To do this we need to 'straighten' it, and doing this creates resistance, which makesit even harder to keep the pressure the same on both side of fan, but also the pressure has to be be same on both sides of the straightener and the fan. Then the iair speed can be measured and by knowing the volume of the section of this place in the chamber we can now calculate the CFM.
While many fan test facilities try to match the pressure difference to actual use levels, many do not. End result is without having one of the above fan testing system we generally cannot replicate the results many of the tests show
.

Few of us have access to such systems They cost tens of thousands of dollars, obviously very complicated .. and are quite large as well.
post #43 of 76
Thread Starter 
Quote:
Originally Posted by geggeg View Post

Depending on when I have caught up with the backlog smile.gif

But no, I really don't know when exactly all these will launch. Definitely not in the next couple of weeks if you are waiting for these to complete your build. Even then I don't know if they are going to be color over performance optimized.
I will wait as I'm going to change case + do some mods and this requires time.
I'm also going to swap my current case(CM Storm Trooper) to something else so I can have more radiator space.
TT X9 looks good, X71 too..... So I have to wait till all these new stuff hit the market and then I will start. For not, I;m just collecting info...
If they made Vardars in Led, that would be super cool. Or some revised/improved Corsair SP fans. thumb.gif
post #44 of 76
i have 6 corsair SP120 2350 and when mounted horizontal / exhausting air out the top of the case they make that annoying noise. Vertically mounted in the front of the case they don't make that noise at all. So i bought 6 of the EK - F4 vardar 2200rpm and they are great in push / pull at the top of my case mounted horizontally and none of that annoying buzzing sound.

meh just realized u cant use 120's doh.gif
Ek does have the 140 vardar fans but not led
Edited by lilchronic - 1/27/16 at 6:47pm
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post #45 of 76
fat4l, I finally got my Riing 14 in and put it as my exhaust to my case so it would match the (2) Riing 12s I have and I must say that it seems to move a good amount of air.
I don't have others brands to compare to, but first impressions are good with this one and my stock 200mm side intake case fan is still the loudest of the bunch.

I think you are smart to still consider the rest of the market though since you will be spending so much on fans, but figured I'd add that my 1 hour experience of the 140mm is good enough to keep it on your watch list.

*Edit: I forgot that fan header is on a fan curve I set with my Asus mobo software so it was only running at like 900rpm. I forced it to full speed and it does get a bit more noticeable with noise so if you plan to run 18 at max it may be worth reading up a bit more on sound levels if its important to you.*
Edited by mrtbahgs - 1/27/16 at 6:17pm
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post #46 of 76
Thread Starter 
Quote:
Originally Posted by mrtbahgs View Post

fat4l, I finally got my Riing 14 in and put it as my exhaust to my case so it would match the (2) Riing 12s I have and I must say that it seems to move a good amount of air.
I don't have others brands to compare to, but first impressions are good with this one and my stock 200mm side intake case fan is still the loudest of the bunch.

I think you are smart to still consider the rest of the market though since you will be spending so much on fans, but figured I'd add that my 1 hour experience of the 140mm is good enough to keep it on your watch list.

*Edit: I forgot that fan header is on a fan curve I set with my Asus mobo software so it was only running at like 900rpm. I forced it to full speed and it does get a bit more noticeable with noise so if you plan to run 18 at max it may be worth reading up a bit more on sound levels if its important to you.*
Nice man, thanks ! +rep

Is Riing 14 louder than 12 when both at full speed ?
post #47 of 76
Quote:
Originally Posted by fat4l View Post

Nice man, thanks ! +rep

Is Riing 14 louder than 12 when both at full speed ?

I am not sure, my 120mms are hooked up to the H100 pump socket so I dont think I can control them myself or override them unless I switch them to a fan header on the motherboard.
At least I assume that the pump manages the fan speed as needed, maybe it is running 100% 24/7.

Also to really test it, id have to do 1 of each and not compare it to dual 12's. Plus one more variable is the 12's are horizontally mounted and the 14 is vertical so that may or may not matter.
On paper I'd suspect the 12's to be louder since they can run 100 rpm faster, but that is far from scientific lol.

One thing to note, when the Riing 14 was hooked up to a fan curve, the brightness of the LED changes with the limited voltage so I ended up setting the fan to like 90% speed so the red ring was still at full brightness.
When it was down to maybe 40% or whatever I had my minimum set to, the light was disappointingly dim.

One thing I did not think of to test was if perhaps the Low Noise Cable, or whatever they call it, would reduce the fan to 1000RPMs, but still keep the LEDs at max brightness.
If that is true, it is probably worth me putting that on because the amount of air coming out the back of my case is insane and I may need to add a small intake to balance the overall net flow.

If someone has experience with Riing fans and how the Low Noise Cable affects the LEDs, please chime in because it won't be quick and easy for me to add it in.
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post #48 of 76
Thread Starter 
I think that low noise adapter will decrease the brightness as well.
There's a resistor inside that cable I believe.

Anyway, I will jsut buy 12 and 14 to try them out wink.gif
post #49 of 76
Maybe even try Koolance 12038HBK fans with 140 to 120 adapters? They are like 6.3mmH2O and really not that loud at all smile.gif
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post #50 of 76
Thread Starter 
Quote:
Originally Posted by AlienPrime173 View Post

Maybe even try Koolance 12038HBK fans with 140 to 120 adapters? They are like 6.3mmH2O and really not that loud at all smile.gif
No adapters man smile.gif
The solution has to clean and nice looking as well wink.gif
I will prolly go with Riing fans afterall.
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