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Fan Configuration Help - Fractal Arc Mini R2

post #1 of 8
Thread Starter 
Hi guys,

I hope to get some feedback and advice on my current setup. I'm not satisfied with it at the moment, and maybe you could help me.
Room temp is around 21-22, CPU idle at 35, GPU idle at 44..





Check out the picture.
- CPU Noctua fans on silent mode with reduced voltage, temp is fine and also the noise.
- case has 3 way (12v-9v-6v) switch with 3 fan connections
- case has dust filters on every side, dust is not a problem since I keep the case higher of the ground
- I have a fan splitter cable
- I also have 1 fan potentiometer that can connect onto the mobo

Now I have two front intakes, and upper/back on exhaust, and I usually keep the case voltage on 6v
I'm considering moving 120mm fan from HDDs to the bottom so it blows directly on the GPU, additionally, switching the upper right 140mm to intake air

What do you think is the best airflow setup? Best positions?
Should I remove some of the fans ?

Thx
post #2 of 8
I have the Arc Mini R2 and used to have mine lined with the FD Silent Series fans. They did a good job, but not as good as I wanted so I lined my case with FD Venturi fans and now my CPU idles at 30c and GPU at 33c. My setup is 2x120mm intakes up front, 2x140mm intakes up top, 1x120mm exhaust, and my EVO 212 has 2x120mm in push-pull configuration.

Looking at your setup, the airflow from the bottom 120mm up front is obstructed from the hard drive bay and probably isn't helping the GPU pull in as much fresh/cool air as you would like. I would try seeing what would happen if you pulled that fan and mounted it as an intake on the bottom of the case in front of the PSU. As for the CPU, you can always try flipping your top fans over to intakes and see what temps you get there.

Experiment with it and post the results. @doyll probably has some better input than I do.
post #3 of 8
Try putting the first top fan (the one closer to the front) as an intake.
post #4 of 8
Quote:
Originally Posted by Package View Post

Hi guys,

I hope to get some feedback and advice on my current setup. I'm not satisfied with it at the moment, and maybe you could help me.
Room temp is around 21-22, CPU idle at 35, GPU idle at 44..





Check out the picture.
- CPU Noctua fans on silent mode with reduced voltage, temp is fine and also the noise.
- case has 3 way (12v-9v-6v) switch with 3 fan connections
- case has dust filters on every side, dust is not a problem since I keep the case higher of the ground
- I have a fan splitter cable
- I also have 1 fan potentiometer that can connect onto the mobo

Now I have two front intakes, and upper/back on exhaust, and I usually keep the case voltage on 6v
I'm considering moving 120mm fan from HDDs to the bottom so it blows directly on the GPU, additionally, switching the upper right 140mm to intake air

What do you think is the best airflow setup? Best positions?
Should I remove some of the fans ?

Thx
First suggestion is click on "Ways to Better Cooling" link in my sig and read posts #2 and #5. #2 is at the end of #5 .. it's that important to know what the air temperature going into components is.
  • Idle temps mean little. They actually sound rather on the high side.
  • Monitor cooler intake air temp at idle and heavy load, then unplug both top fans and monitor idle and load again. My guess is temps will be lower with them unplugged.
  • Remove dust filters from exhaust vents .. be they with or without fans on the. Why filter air coming out of the case? You already filtered it going in. tongue.gif Also, the filter restricts how much air the vent can flow.
  • Add on of the top fans as a bottom intake and set case up with 30-40mm blocks under the feet. You can use bottle caps, spray can caps whatever. This should give GPU a better cool air supply. Post #15 in "Ways to Better Cooling"
  • Remove all unused PCIe back covers. This improves front to back airflow.

If it was my system, I would probably put a Phanteks PWM controlled variable voltage fan hub in and control all case fans with CPU fan header PWM signal. Post #4 in "Ways to Better Cooling"

Sorry @Duality92, but having intake and exhaust fans side by side generally forms an air loop.
Post #21 in "Ways to Better Cooling"
post #5 of 8
Warning: Spoiler! (Click to show)
Quote:
Originally Posted by doyll View Post

First suggestion is click on "Ways to Better Cooling" link in my sig and read posts #2 and #5. #2 is at the end of #5 .. it's that important to know what the air temperature going into components is.
  • Idle temps mean little. They actually sound rather on the high side.
  • Monitor cooler intake air temp at idle and heavy load, then unplug both top fans and monitor idle and load again. My guess is temps will be lower with them unplugged.
  • Remove dust filters from exhaust vents .. be they with or without fans on the. Why filter air coming out of the case? You already filtered it going in. tongue.gif Also, the filter restricts how much air the vent can flow.
  • Add on of the top fans as a bottom intake and set case up with 30-40mm blocks under the feet. You can use bottle caps, spray can caps whatever. This should give GPU a better cool air supply. Post #15 in "Ways to Better Cooling"
  • Remove all unused PCIe back covers. This improves front to back airflow.

If it was my system, I would probably put a Phanteks PWM controlled variable voltage fan hub in and control all case fans with CPU fan header PWM signal. Post #4 in "Ways to Better Cooling"

Sorry @Duality92, but having intake and exhaust fans side by side generally forms an air loop.
Post #21 in "Ways to Better Cooling"

I guess I knew what I meant, but I didn't say it xD

I wanted to add to disconnect the top rear fan.
post #6 of 8
Thread Starter 
Thanks alot guys.

Using your suggestions..
A - I would connect 2 front intakes on a controller, and the rest on the case 3way controller
B - probably would make a less noisy setup. back exhaust on a PWM and the rest on the case control



Question for the bottom fan. Originally it is a 120mm slot, but a 140mm can fit there nicely + the grid covers a bit wider area than 120mm. Which one should I use ?

@doyll Thats a very interesting read. tnx.
Unfortunately I cannot measure the temps inside, only from direct GPU CPU reading.
I usually lay my case horizontally to have better airflow for the psu, do you suggest keeping it vertically ?

If i decide to use the PWM it's going to take up that PCIe slot.
You think I could also remove the metal mobo protection cover for the USB, 3.5mm etc., would it help the Flow? wheee.gif

@Dimensive I would gladly post results, but I don't have time at the moment, and measuring tools. I will keep you updated with the final result
post #7 of 8
go with option A and remove the expansion slot covers to allow a more direct path for the hot air to escape from the GPU

as far as the mobo IO panel, leave it in since you are already using an exhaust fan on the back drawing the air away.. besides, you want more of the GPU air to escape from the expansion slots, not the IO panel.
post #8 of 8
Quote:
Originally Posted by Duality92 View Post

Warning: Spoiler! (Click to show)

I guess I knew what I meant, but I didn't say it xD

I wanted to add to disconnect the top rear fan.
Might work, but I'm afraid the top intake will likely be useless or be recycling heated exhaust leaking out back top vent .. and if case sets under a desk or back is under a shelf the heated air coming out the back will be flowing up and out over the top and into the top intake.
Quote:
Originally Posted by Package View Post

Thanks alot guys.

Using your suggestions..
A - I would connect 2 front intakes on a controller, and the rest on the case 3way controller
B - probably would make a less noisy setup. back exhaust on a PWM and the rest on the case control



Question for the bottom fan. Originally it is a 120mm slot, but a 140mm can fit there nicely + the grid covers a bit wider area than 120mm. Which one should I use ?

@doyll Thats a very interesting read. tnx.
Unfortunately I cannot measure the temps inside, only from direct GPU CPU reading.
I usually lay my case horizontally to have better airflow for the psu, do you suggest keeping it vertically ?

If i decide to use the PWM it's going to take up that PCIe slot.
You think I could also remove the metal mobo protection cover for the USB, 3.5mm etc., would it help the Flow? wheee.gif

@Dimensive I would gladly post results, but I don't have time at the moment, and measuring tools. I will keep you updated with the final result
A, without the top fan and all PCIe slot covers removed.

What case do you have? I ask because I'm trying to figure out what vents and where they are that all this intake vent area / airflow is supposed to leave the case. We need at least as much exhaust vent area as intake for air to flow properly. And the more open the lower part of case back is the better the GPU airflow will be.

What are motherboard temps now? If they are not hot, don't bother removing I/O shield. Removing I/O usually helps airflow over motherboard around CPU, but to remove it requires removing motherboard.


psyclum and I have very similar views of what works. thumb.gif
I have not experience problems with GPU heat when I/O shield was removed, but I also have not done any real comparison testing to determine if there is in fact any difference in airflow with and without I/O installed.
Edited by doyll - 2/26/16 at 1:00am
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