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Corsair 540 Air Auto-Cooling Solution - Page 2

post #11 of 19
Quote:
Originally Posted by MyNewRig View Post

Thanks a lot, that indeed helps, i will have to rely on the spec sheet to make my "theoretical" calculations or best guesses as i have nothing else to work with, i will calculate the performance/noise of two SP120 High Performance vs. three SP120 Quite Editions and go with the best noise/performance ratios and keep only one intake, like you said SP fans should creative positive pressure and push air out from the vents anyways so no need to overdo the exhausts by using two instead of one.
Assume you mean one exhaust??


CFM specs are not accurate and even if they were they are with no resistance... like setting on a table blowing... so really mean very little.

dBA specs are also setting in the open with no resistance. You can test this by plugging in a fan and holding it flat 10cm above a table, than slowly lowering it to 1cm above table. As the fan gets close to the table. 2-3cm you will notice a difference in how much noise it makes the closer to the table you go. This is because the airflow to the fan is being restricted.

Remember, static pressure is how far the fan pushes water up a tube before it stops moving any air. Static = stopped, still, not moving.

This is why I keep tell everyone to forget the fan specs as they mean very little. Use fan reviews that show how well the fan cools (moves air when restricted) and how much noise they make while cooling. Some reviews even give different fan rpm to cooling and noise.

If I had to guess 3x SP120 PWM High Performance fans will supply enough air to cool your system... this is a guess. It is not easy to calculate how much will do what. This is also assuming you will either have a dedicated fan control or be using automatic PWM control.

Edit:
Google is your friend. There are many dBA calculators out there. There are also many explanations of how CFM and dBA work and what different dBA volume levels sound like

dBA calculator:
http://www.sengpielaudio.com/calculator-spl.htm

dBA of coolers at 700rpm and full speed
http://www.hardwaremax.net/reviews/kuehler/647-test-thermalright-archon-sb-e-x2.html?showall=&start=8

What the coolers actually sound like
http://www.hardwaremax.net/reviews/kuehler/420-test-thermalright-silver-arrow-sb-e.html?start=5
http://www.hardwaremax.net/reviews/kuehler/647-test-thermalright-archon-sb-e-x2.html?showall=&start=8
Edited by doyll - 7/31/13 at 7:23am
post #12 of 19
Thread Starter 
Quote:
Originally Posted by doyll View Post

Assume you mean one exhaust??


If I had to guess 3x SP120 PWM High Performance fans will supply enough air to cool your system... this is a guess. It is not easy to calculate how much will do what. This is also assuming you will either have a dedicated fan control or be using automatic PWM control.

Yes i meant exhaust.

Did you mean quiet fans? or 3 HIGH PERFORMANCE? in this case won't that be so loud?

Just to confirm? you guys say that because these fans have to pull air through the filter in the front they need to be SP fans, remember than this case does not have HDD cages in front or any other obstructions in the way, must i really use SP fans or am i better of with AF fans?

And if i get 4-pins fans to control them from the Motherboard through PWM and that fails and i decide to get a fan controller, can i still use thee PWMs with 3-pin voltage controlled fan ports in the controller?
post #13 of 19
First thing I'd do on a 540 would be throwing the HDDs into the back room, and chainsaw my way thru the floor for two extra 140 intakes ChainsawMadMan.gif .
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post #14 of 19
Thread Starter 
Quote:
Originally Posted by TELVM View Post

First thing I'd do on a 540 would be throwing the HDDs into the back room, and chainsaw my way thru the floor for two extra 140 intakes ChainsawMadMan.gif .

Sounds good but too much work than need be, i would not go that far trying to cool a computer case as it starts to sound like rocket science .. lol

If i have the same view about this case as you i would not buy the 540 to begin with, given that there are countless cases in the market with bottom mounted fan spots out of the box.

I chose this case for looks and new concept, also the direct airflow concept and the large window in the side panel looks cool, that is pretty much about it, i could just keep it with the stock fans and call it a day, but i am trying to achieve something slightly better than stock, i would not go as far as drilling in the case smile.gif
post #15 of 19
Thread Starter 
So the final word is get SP fans for front intakes as apposed to AF ones? i am ready to order the high performance SP120s for front intake and try them out with the motherboard's PWM controller and call it a day, i hope i am not messing up somewhere.
post #16 of 19
If you care about noise levels the SP120 High Performance Editions are not your fan. Even with PWM versions the 40% duty cycle puts them down around 1000-1200 RPM, which is quieter but still not silent.

In comparison, the SP120 Quiet Editions are 1450 RPM max, the PWM versions can drop down closer to 500-700 RPM with the 40% duty cycle, which is near silent.

The Performance editions give you more headroom for sure, but they're going to be much louder than the stock fans.
post #17 of 19
Here'saudio of fans at speed. Both AF & SP120's as well as AF140 starting at 6:30 in video
http://www.youtube.com/watch?v=XFi39czpsac

I'm assuming the 2350rpm fan will idle down to same speed as 1400rpm with PWM control. That's what I've found with other fans that have different top speeds.
post #18 of 19
Thread Starter 
Quote:
Originally Posted by CorsairGeorge View Post

If you care about noise levels the SP120 High Performance Editions are not your fan. Even with PWM versions the 40% duty cycle puts them down around 1000-1200 RPM, which is quieter but still not silent.

In comparison, the SP120 Quiet Editions are 1450 RPM max, the PWM versions can drop down closer to 500-700 RPM with the 40% duty cycle, which is near silent.

The Performance editions give you more headroom for sure, but they're going to be much louder than the stock fans.

Quote:
Originally Posted by doyll View Post

Here'saudio of fans at speed. Both AF & SP120's as well as AF140 starting at 6:30 in video
http://www.youtube.com/watch?v=XFi39czpsac

I'm assuming the 2350rpm fan will idle down to same speed as 1400rpm with PWM control. That's what I've found with other fans that have different top speeds.


Thank you very much CorsairGeorge for your input, timely and much appreciated, and thanks doyll for your video link and all the great contributions to this thread, you guys are awesome.


Based on all the research i have done and interactions it seems that for the Corsair 540 Air case as far as corsair fans go, 3x SP120 Quiet Edition front intakes will provide the best CFM/Noise levels achievable while being PWM controlled, as they will be almost completely silent to the human ear @ 500-700 RPM while providing 100+ CFM in full load which should be enough to provide positive air flow for this case with one stock exhaust and at approximately half the noise of the High Performance ones, which should provide silent idle operation and tolerable noise levels under-load operation.

Funny enough that after conducting this research which took almost two days the case has went out of stock in the corsair web shop and the fan promotion will end by midnight today.

So no fans for me for now, i will use the stock fans for a while and see how things go smile.gif

CorsairGeorge i believe this case needs an early revision to a achieve perfection, there are unanimous requests for the following features:

1) Provide filters for all open vents of this case so even a negative airflow case would still not collect dust.
2) Make the SSD cage take 3.5 drives as well with 2.5 adapters so the case can take more drives in general.
3) Provide longer cables for the front panel connectors to be able to connect to all motherboards.
4) Make the bottom of the left chamber able to house 2 extra intake fans if users do not put 3.5 drives there (after giving the option for 3.5s in the left chamber)
5) Add the simple 2 step or 3 step fan controller that you have in the Carbide 500R which is already selling for less than this case so those who desire quieter operation can have that out of the box.


I think these are not costly adjustments and can be easily achieved even if the case sells for 10% more i think most people will be willing to pay the extra to have perfection, maybe a new edition called 540 Air Advanced or 550 Air? smile.gif

Thanks a lot.
post #19 of 19
I guess they kept the HDDs in the 'show room' because as it comes there are no fans ventilating the 'back room', so HDDs may overheat if placed there. This means no easy floor fans. Then the show window means no easy left panel fans. And all this means less than ideal air cooling (IMHO).

However the 540 is overall a bold concept with nice strong points. I particularly like the close proximity of front intake fans to the mobo, blowing the components at point-blank range (superb for cooling). The detachable rear grill is also a nice touch, that spares us dealing ChainsawMadMan.gif with the typical restrictive stamped honeycomb grill.

th_15_zps1b6f58a6.jpg
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