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Fan air flow disruptions? - Page 2

post #11 of 16
@ All3n
Nice system. thumb.gif

Not familiar with Asrock but most motherboard the 4pin fan socket accept both 3pin and 4pin fans and can be set to control using PWM or voltage.

Sorry I can't be more help.
post #12 of 16
I noticed in your post you say it can be set in the BIOS, I will have a look there.

Same with the two CPU fans, if I plugged them into CPU1 and 2, I could only slow down in CPU2. I am probably repeating myself now. CPU1 is a 4-pin.
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post #13 of 16
Thread Starter 
Quote:
Originally Posted by doyll View Post

TY-140 is first generation. Thermalright still makes them but don't think they are marketing them individually. TY-141 has little different blades and ball bearing motor. TY-145 is same as TY-141 with black housing and white fan. TY-147 has fan blades like TY-140 but is ball bearing with black housing and white fan. TY-143 is on steroids with TY-140 fan blades in red housing and orange blades it spins up to 2500rpm. All idle at same 660rpm and all make the same noise up to 1300rpm. Above that of course the TY-143 gets progressively louder.
PWM is pulse-width modulation. Basically it's a small circuit board in fan. Motherboard gets a rpm signal from fan and sends out a PWM signal to fan. Ciruit board uses that signal to control the 12v power lead to fan by sending pulses of power so fan spins at the speed the motherboard wants it to. The advantage is you can use a PWM splitter that uses plugs into PSU molex connector to power the fans. You have a master PWM socket to plug you master fan into that send the rpm signal to motherboard and a PWM plug to plug into motherboard PWM socket. The PWM signal coming from the motherboard is split into 23/4 leads to other fans. All the other fans use the same PWM signal to control their rpm. If they are all of similar rpm range they all spin as similar rpm as master fan.
The Fractal Design fans are okay but not PWM.
Your motherboard has 1x PWM and 3x 3pin connections. I'm guessing like most other motherboards the 4pin can be used for either PWM or 3pin voltage control depending on how it's set in Bios. You can set each of these motherboard connectors from Bios to control fan speeds. No idea what the total fan power load motherboard can handle.
Alright, thanks again guys.
So far i have only found 1 seller in Australia for the Thermalright fans (gotta pay postage ect)lol. Guess that's out of the question, since im already running over my budget.
As for the PWM splitter. The fans i will be using are 3-pin, the PWM splitter only does 4-pin. Right? 3-pin doesn't work with that splitter.
I think i feel comfortable using a fan controller and it would be better to use all the same type/brand of fans right?. I will respectively turn up the RPM's when i am gaming or rendering, then turn them down what i am not.
The ambient temp in my room is usually around 28 Celsius so it won't be hard for the computer to automatically turn the fans up lol.
I might put buying the additional two fans & fan controller on hold & just use what comes with the case till we can come to a final conclusion to what you can agree to since you know more than me :3
post #14 of 16
Ya maybe hold off on buying another fan controller for now, use the one in the case first.

Ideally the three fans that you connect with controller are similar RPM wise, not to say that some other combination would not work.

I'll let Doyll comment on the PWMs, oh and thanks for the compliments Doyll.

Feel free to experiment yourself, I am only making suggestions based on my recent experiences with a similar case.
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post #15 of 16
Quote:
Originally Posted by james990 View Post

Alright, thanks again guys.
So far i have only found 1 seller in Australia for the Thermalright fans (gotta pay postage ect)lol. Guess that's out of the question, since im already running over my budget.
As for the PWM splitter. The fans i will be using are 3-pin, the PWM splitter only does 4-pin. Right? 3-pin doesn't work with that splitter.
I think i feel comfortable using a fan controller and it would be better to use all the same type/brand of fans right?. I will respectively turn up the RPM's when i am gaming or rendering, then turn them down what i am not.
The ambient temp in my room is usually around 28 Celsius so it won't be hard for the computer to automatically turn the fans up lol.
I might put buying the additional two fans & fan controller on hold & just use what comes with the case till we can come to a final conclusion to what you can agree to since you know more than me :3

Correct, the PWM splitter is for PWM fans. You can plug a 3 pin fan into it but it will run on 12 volt with no control

Yes, using same fans as come in Arc Midi would be good. And like All3n said use the stock fan controller. It's probably good enough you can use a splitter on it's 3 leads and run a few more fans.

Try putting all 3 fans as intakes in front and bottom. Remove the removable top part of HDD cage and give it a try. My guess is 3x intakes will cool better than only 1 front intake and 2x back / top exhaust.

Your room at 28c is warmer than my system idles. biggrin.gif

Have you looked at the Fractal Design thread? Lots of good stuff there.
http://www.overclock.net/t/838683/fractal-design-case-club
post #16 of 16
Thread Starter 
Quote:
Originally Posted by doyll View Post

Correct, the PWM splitter is for PWM fans. You can plug a 3 pin fan into it but it will run on 12 volt with no control
Yes, using same fans as come in Arc Midi would be good. And like All3n said use the stock fan controller. It's probably good enough you can use a splitter on it's 3 leads and run a few more fans.
Try putting all 3 fans as intakes in front and bottom. Remove the removable top part of HDD cage and give it a try. My guess is 3x intakes will cool better than only 1 front intake and 2x back / top exhaust.
Your room at 28c is warmer than my system idles. biggrin.gif
Have you looked at the Fractal Design thread? Lots of good stuff there.
http://www.overclock.net/t/838683/fractal-design-case-club
Thanks for your advice man & yeh I've made many posts on there as well :3
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