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post #41 of 47
Thread Starter 
Hi again...
finally i had some time to test this at full load playing Crysis3 for about 2 hours...


After saw the Hwmonitor results i got a max temp of 67ºC on GPU (now with the 2x Noctua NF-P12 as intake at max rpm and the 2x Collermaster Sickleflow on the vga cooler at max rpm too) - just 1º or 2º more than with the 2x Noiseblocker XL2 in intake but with a pretty less noise...so acceptable for me.

I can see too something strange...Hwmonitor gives me 128ºC on the TMPIN2 (that i have no ideia what is) but as the max and min temps are the same i assume that is a bug or something...

About the rpm of the fans the parameter FANIN1 its the rpm of the noctuas and FANIN2 the rpm of the vga cooler fans. Here another value is strange (that 675000rpm)...somehow i cannot get a correct reading just on the noctua fans rpm...i dont know why.

My cpu went till 55ºC but the cpu cooler fan (PWM Noiseblocker fan) got a max of 1171rpm (another strange thing - but here it might ca be because of the Q-fan settings in the bios that i put)

Another curious think that i could noticed is that despite the collermaster sickleflow are mentioned to be 19dba it must be on the min rpm for sure because @ max rpm (1800rpm) i can ear a bit of noise from them wich is more that the 19dba that are mentioned...

Any help about the interpretation of tthese results?

Thks a lot again wink.gif
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post #42 of 47
Thread Starter 
I dont wanna go that far about their lie but that 19dba that they mentioned are obviously not @ 1800rpm or more...maybe they are meaning that is @ min rpm and in fact with low rpm they are noiseless. Now the other thing that im worried is if with the air pressure that they say the same happens...these fan can really make almost 3.0 of air pressure?

Thks
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post #43 of 47
Quote:
Originally Posted by kelsinni View Post

I dont wanna go that far about their lie but that 19dba that they mentioned are obviously not @ 1800rpm or more...maybe they are meaning that is @ min rpm and in fact with low rpm they are noiseless. Now the other thing that im worried is if with the air pressure that they say the same happens...these fan can really make almost 3.0 of air pressure?

Thks

Okay, so I read a little about the difference between dB and dBa, and how I understand it is that dBa means perceived volume, compared to dB which means actual volume. For example humans don't hear low frequencies as well as higher frequencies, so 60dB at 30Hz, would maybe be perceived as 45dB. (Not scientifically correct.) The Sickleflow's actual dB rating is 42dB, but assuming it's a low frequency sound it would be perceived as 19dBa. I think. 40dB is equal to the sound of whispering, so that is pretty loud. Cooler Master of course uses the lowest number, to sell more units. A 42 dB rating wouldn't look too attractive. So, they're probably just loud fans.

EDIT: 3 mm/h20 isn't unbelieveable, in my opinion. There are (extremely loud) fans that can do 7-8 mm/h20.
Edited by Dogmatic34 - 10/9/13 at 7:46am
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post #44 of 47
Quote:
Originally Posted by kelsinni View Post

Hi again...
finally i had some time to test this at full load playing Crysis3 for about 2 hours... Warning: Spoiler! (Click to show)

After saw the Hwmonitor results i got a max temp of 67ºC on GPU (now with the 2x Noctua NF-P12 as intake at max rpm and the 2x Collermaster Sickleflow on the vga cooler at max rpm too) - just 1º or 2º more than with the 2x Noiseblocker XL2 in intake but with a pretty less noise...so acceptable for me.

I can see too something strange...Hwmonitor gives me 128ºC on the TMPIN2 (that i have no ideia what is) but as the max and min temps are the same i assume that is a bug or something...

About the rpm of the fans the parameter FANIN1 its the rpm of the noctuas and FANIN2 the rpm of the vga cooler fans. Here another value is strange (that 675000rpm)...somehow i cannot get a correct reading just on the noctua fans rpm...i dont know why.

My cpu went till 55ºC but the cpu cooler fan (PWM Noiseblocker fan) got a max of 1171rpm (another strange thing - but here it might ca be because of the Q-fan settings in the bios that i put)

Another curious think that i could noticed is that despite the collermaster sickleflow are mentioned to be 19dba it must be on the min rpm for sure because @ max rpm (1800rpm) i can ear a bit of noise from them wich is more that the 19dba that are mentioned...

Any help about the interpretation of tthese results?

Thks a lot again wink.gif

TMPIN2 is your northbridge. I am quite sure you can assume that temp to be just a flaw in HWMonitor. It is known to happen. And if it was actually that hot, you would know it.

As for noise.
The manufacturer stated dba ratings are most likely correct. But they don't always tell HOW they measured them. And yes, unless otherwise stated, the dba rating is at minimum speed.

There are many factors that affect the perceived noise in a PC. The acoustic properties of the case plays a part. As does the mounting of the fans. Not just how they are mounted, but also what they are mounted on and where.
The number of fans is a big factor as well. Perceived noise "stacks". For each identical fan (in terms of noise) the perceived noise level will go up by 3dba. In your case I count 7 fans (including PSU). If we just assume that they all produce 19dba, the actual perceived noise level will be closer to 37dba.

This is where the fan controller comes in. Play around with the fan speeds until you find the sweet spot.
Edited by Dire Squirrel - 10/9/13 at 8:05am
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post #45 of 47
Thread Starter 
Quote:
Originally Posted by Dogmatic34 View Post

Okay, so I read a little about the difference between dB and dBa, and how I understand it is that dBa means perceived volume, compared to dB which means actual volume. For example humans don't hear low frequencies as well as higher frequencies, so 60dB at 30Hz, would maybe be perceived as 45dB. (Not scientifically correct.) The Sickleflow's actual dB rating is 42dB, but assuming it's a low frequency sound it would be perceived as 19dBa. I think. 40dB is equal to the sound of whispering, so that is pretty loud. Cooler Master of course uses the lowest number, to sell more units. A 42 dB rating wouldn't look too attractive. So, they're probably just loud fans.

EDIT: 3 mm/h20 isn't unbelieveable, in my opinion. There are (extremely loud) fans that can do 7-8 mm/h20.

Quote:
Originally Posted by Dire Squirrel View Post

TMPIN2 is your northbridge. I am quite sure you can assume that temp to be just a flaw in HWMonitor. It is known to happen. And if it was actually that hot, you would know it.

As for noise.
The manufacturer stated dba ratings are most likely correct. But they don't always tell HOW they measured them. And yes, unless otherwise stated, the dba rating is at minimum speed.

There are many factors that affect the perceived noise in a PC. The acoustic properties of the case plays a part. As does the mounting of the fans. Not just how they are mounted, but also what they are mounted on and where.
The number of fans is a big factor as well. Perceived noise "stacks". For each identical fan (in terms of noise) the perceived noise level will go up by 3dba. In your case I count 7 fans (including PSU). If we just assume that they all produce 19dba, the actual perceived noise level will be closer to 37dba.

This is where the fan controller comes in. Play around with the fan speeds until you find the sweet spot.

After read your replies maybe i was a bit "believer" thinking these coolermaster could do that air pressure with just 19dBa...smile.gif
I know now that many times the values that are mentioned on their websites is all about marketing...until there isnt a standardize model for measurements and that all the brands are required to follow the better way is really to read some reviews smile.gif

In fact i have 7 fans in total (1x CPU, 2x VGA cooler, 1x Exhaust, 2x Intake and the psu fan) but @ min rpm my system now is really "noiseless" and i had never a low noise as i get now...even if i put the 2x Intake Noctua @ max rpm the noise keeps very low...the trick is just as the friend Dire Squirrel says: find the hot spot to put the 2x CoolerMaster Sickleflow @ the exact rpm...i have noticed yestherday that arround 1400rpm (and not the 1800rpm) the max temp. of the GPU keeps similar as they were @ 1800rpm and maybe i can reduce a little more rpm...

Other thing that passed to my mind is try to switch the 2x SickleFlow of the VGA for the 2x NF-P12 of the intake because i had already saw that the diference between max/min intake rpm doesnt affect too much the GPU max temp (just arround 1ºC or 2ºC)...

Another issue that i would appreciate you help is what values should i put in the bios on Q-fan option regarding the control of the CPU fan aswell of the exhaust fan...i dont know if the values that i have now as the most suitable. Later i will post here some pics of the option available in the bios fot that...

Thks again for all replies wink.gif
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post #46 of 47
Thread Starter 
Hi again...
well, im really adicted in this and trying to find the best installation to maximize performance (low temps) vs noise...

I was tinking too put one or two 140mm fan instead of the 120mm that i have now, and with that try to get less noise when they are at max rmp...i had read some good reviews about the Thermalright TY-141 and i have bought one to test if it could fit on my case and how it performed. So now im trying a diferent instalation on my system because the big problem were not the max temps but a bit o noise that the 2x CoolerMaster SickleFlow made when they were set at max rpm on the VGA cooler so now im trying this instalation:












With the instalation that i had befor one thing i had noticed: the 2x Noctua NF-P12 were really noiseless even at max rpm and so im trying them on the VGA cooler because their air pressure at max rpm (despite lower than the SickleFlow) is acceptable...

Now i have the Thermalright TY-141 and the Noiseblocker Black Silent Pro (both PWM fans) connected with the two 4pin in the motherboard and the intake/exahust SickleFlows and the two Noctuas of the VGA controled with the Zalman fan controller...

Maybe with this new configuration the max temps could eventually raize a couple of ºC but maybe that is acceptable if the dBa of the entire system go down a little....specially the VGA fans @ max rotation.

I will do some tests and reply here the results...
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post #47 of 47
Thread Starter 
Hi again folks...
Meanwhile i got another Noctua NF-P12 and put it as Exhaust fan replacing the CoolerMaster SickleFlow and after had some time to test this new fan configuration and played Crysis3 for about 2 hours and with ALL the 5 FANs at max RPM (all connected to the fan controller) my temps were like this:


As you can see the 2 Noctuas NF-P12 on the GPU increased my max. temps for about 5ºC. My intention is to replace the intake CoolerMaster SickleFlow and i have already order a Prolimatech Blue Vortex 14 (http://www.prolimatech.com/en/products/detail.asp?id=160&subid=620#showtab) because i eard a lot of good replyies about it and i really wanna see it work comparatively with the other intake 140mm Thermalright TY-141 so i can get and ideia of his noise at max RPM...

When i had it install then my goal is find the sweet spot of the max. RPM mostly for the 2 intake fans that because of their High CFM and low RPM and dBa i think i can get a cold system even when im playing...

After i done it i will post here the final settings and some pics too...


Thks again for all help given
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