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* * Ways to Better Cooling; Airflow, Cooler & Fan Data..*

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post #51 of 1557 (permalink) Old 04-06-2015, 11:33 AM
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I replaced some Aerocool Sharks with AC DS fans and while they are a little quieter they don't move much air. Temps went up so I replaced them with el cheapo Arctic Cooling F12s and temp and noise went down.

There are lots of better fans out there than the DS.

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post #52 of 1557 (permalink) Old 04-08-2015, 06:27 AM
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@doyll

Hey there, since this seems the most appropriate place, I thought I'd ask you questions I have regarding airflow in the case here instead of starting a new thread.

First of all, the specs for my current build are in my sig, but basically it's in a Corsair 750D, Running a Noctua NH-D15 with stock fans and an MSI R9 290. The case is elevated off the ground, placed on a cabinet with no obstructions to intake or exhause beyond the already restrictive front panel and Demciflex filters. For fans i'm using 7 x AP-15 for all intakes and rear exhaust. The blue rectangle in the picture consists of 2 x Bitfenix Spectre Pro LEDs hung from a bracket.

All intake fans are run off a fan controller (NZXT Sentry 3) at 40% when doing day to day tasks but would be ramped up when needed. The Noctuas and rear exhaust are run off the motherboard with the exhaust having a more aggressive fan profile in order to exhaust out warm air at a higher rate. Ambient temps are around 30deg C and cooler intake temps hover around 2-3 degrees higher.

With fans in their lower settings, I get temps about 6-8 degree above ambients for my cpu but when I crank all the fans to their full rpms, i somehow get warmer temps. Could this be because I have insufficient exhausts? Or that warm air is recirculating back into the case?

Also, i'm thinking of ghetto-rigging another fan to the pcie brackets to obtain a "straighter" path of fresh air past the gpu. In your opinion, would this help in any way or would it just be a waste of time?

Kindest Regards,
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post #53 of 1557 (permalink) Old 04-08-2015, 07:26 AM - Thread Starter
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Hi @cephelix
Looks like a good system.

I think what you are experiencing is what I call airblow, not airflow.
  • Airflow is cool air moving into case to coolers and their heated exhaust moving on out of case without contaminating the cool airflow.
  • Airblow is air moving everywhere mixing heated and cool air and raising temps.

Think of the case as a tub full of water. We want cool water flowing in at one end of tub and the warmed water moving out the other end .. not a jacuzzi mixing it all up.

My suggestions are:
For intakes 2x front, 1x bottom & 1x top should be plenty. Remove all unused PCIe back covers and anything else you can to improve front to back airflow. We want the GPU exhaust to move back and out of case .. out the side if there is a vent directly over or slightly above it sometimes works well. It is often a lot of trial and error experimentation finding the best combination.

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post #54 of 1557 (permalink) Old 04-08-2015, 07:33 AM
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Quote:
Originally Posted by doyll View Post

Hi @cephelix
Looks like a good system.

I think what you are experiencing is what I call airblow, not airflow.
  • Airflow is cool air moving into case to coolers and their heated exhaust moving on out of case without contaminating the cool airflow.
  • Airblow is air moving everywhere mixing heated and cool air and raising temps.

Think of the case as a tub full of water. We want cool water flowing in at one end of tub and the warmed water moving out the other end .. not a jacuzzi mixing it all up.

My suggestions are:
For intakes 2x front, 1x bottom & 1x top should be plenty. Remove all unused PCIe back covers and anything else you can to improve front to back airflow. We want the GPU exhaust to move back and out of case .. out the side if there is a vent directly over or slightly above it sometimes works well. It is often a lot of trial and error experimentation finding the best combination.

Yeah, I think i am experiencing airblow as well...didn't want to use the term since i wasn't sure I'd be using it correctly. I've already removed all unused pcie brackets but i may put them back on since sometimes my nieces and nephews come over and they may be very tempted to put stuff into the slots...The case doesn't have a side vent though. Any thoughts on strapping another exhaust to the free pcie slots?

I would try out your configuration when stressing my comp and see if that makes any difference....

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Cooling
Alphacool Monsta 240mm
Cooling
EK Radeon Vega Acetal+Copper Full Cover
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post #55 of 1557 (permalink) Old 04-08-2015, 07:39 AM
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@cephelix. hello, I peg your pardon but I'd like to tell you my subjective and personal opinion, as well, since it is already hiding inside your post :

Quote:
Ambient temps are around 30deg C ...

Do not expect much.

Thank you.

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post #56 of 1557 (permalink) Old 04-08-2015, 07:45 AM
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Any suggestion on fan setup with the current hardware that I posted? The 980 Hall of Fame exhausts air into the case.
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post #57 of 1557 (permalink) Old 04-08-2015, 07:59 AM
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Quote:
Originally Posted by LostParticle View Post

@cephelix. hello, I peg your pardon but I'd like to tell you my subjective and personal opinion, as well, since it is already hiding inside your post :
Do not expect much.

Thank you.
Oh,i know about that...these are just normal operating temps..when i get down to stressing i'll turn the air conditioning on.that brings ambients down to 25 degrees.weird thing is the thermistor on my fan control,which i put about 5cm away from the cooler intake displays 23deg.lol.i may need to adjust the thermistor's position

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Kingston Low Voltage Value Ram
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Western Digital Green 3TB
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Seasonic X750
Cooling
EK Supremacy Evo
Cooling
Nidec Servo Gentle Typhoons 1850rpm x 8
Cooling
Alphacool Nexxos XT45 360mm
Cooling
Alphacool Monsta 240mm
Cooling
EK Radeon Vega Acetal+Copper Full Cover
Cooling
EK XTop D5 PWM Revo
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Corsair Obsidian 750D
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post #58 of 1557 (permalink) Old 04-08-2015, 08:04 AM
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Quote:
Originally Posted by cephelix View Post

Oh,i know about that...these are just normal operating temps..when i get down to stressing i'll turn the air conditioning on.that brings ambients down to 25 degrees...

Ah, I see, great then! thumb.gif

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Cooling
Corsair H110
Cooling
2 x Noctua NF-A14 industrialPPC-2000/3000 PWM (Push)
Cooling
Case Fan: 1 x Noctua NF-A14 PWM (rear, exhaust)
Cooling
Case Fan: Noctua NF-S12A PWM (front, intake)
Cooling
Case Fans: 2 x Noctua NF-S12A FLX (front, intake)
Cooling
Noctua NH-D15S
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post #59 of 1557 (permalink) Old 04-08-2015, 08:07 AM
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Quote:
Originally Posted by LostParticle View Post

Ah, I see, great then! thumb.gif
Cross your fingers and wish me well...forgot to mention,if it makes any difference that the cpu sits in the path of the aircon vent as well...

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post #60 of 1557 (permalink) Old 04-08-2015, 07:19 PM
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Quote:
Originally Posted by doyll View Post

Fractal Design Define R2 modified to 140mm fans, bottom & back grills removed, front refitted to 140mm fans

Very nice. How much of a restriction is the fan.. "grill" built into pretty much every case? Is there much of an improvement in airflow because of the removal of the restriction, or is there more of a noticeable difference in the sound level of the fans while they are moving air? I am interested in doing this myself to both of my cases, but tbh, I'm a tad nervous about it, and do not know what to use for tools. Or how to go about such a thing.

Any tips for that?

Quote:
Originally Posted by Dwhite311988 View Post

I had recently purchased an Air 540 in Arctic White to do my black/white (mostly white) themed build. I am running an Asus Mark S Sabertooth with the Avexir Sabranco limited edition ram sticks and a Galax GTX 980 Hall of Fame gpu. I know some of that seems irrelevant, but I kind of wanted to give an idea on the theme I have going on here before I ask my questions. I was wondering which black/white fans would be optimal for my case? I am trying to further understand your guides to help choose and set up my fans. Also, I would like a matching cpu cooler that will still allow me to show off my blinking white LED lights on the ram without sacrificing cooling performance? I hear that the mounts for the front intake on the air 540 can slightly restrict the airflow when using two 140mm fans instead of 3 120mm fans. As far as cpu cooler goes, I know there is a Dark Knight II Frostbourne Edition that seems like it may fit well with my theme - http://www.techpowerup.com/180801/xigmatek-dark-knight-frostbourne-edition-cpu-cooler-announced.html. Any suggestions on case fan choice/setup would be greatly appreciated. What is your opinion on the Aerocool Dead Silence case fans? I am also considering the TY-147A fans. I live in the United States, but I don't mind having anything shipped from overseas. Thanks in advance!

Quote:
Originally Posted by doyll View Post

Sorry for the delay. Busy weekend chasing bunnies. biggrin.gif

Some of this you already know, but here goes.

Your Mark S Sabertooth has about 50-52mm center CPU toward RAM.
Avexir Sabranco is 30mm tall

Cryorig R1 Universal is mostly white and is 48.5mm center CPU to front of 13mm front fan.



Stock fan clears no problem. Using TY-147 or TY-147A fans or some other white fans would move fan over RAM a little.





Not many white coolers out there. I'm not impressed with the Dark Night coolers. Have you considered using white light gray spray paint on a cooler? As long as the top is color matched to your system, the fins hardly show. And by spraying at a steep angle the edges get colored when painting the top of cooler without hindering cooling. We just don't want a lot of paint going between the fins, but on the edges it no problem.

I have never used Aerocool fans so can't really help there. I do use TY-140, TY-143, TY-147 and TY-147A fans and love them all.

I know that these are really more CPU cooler fans, but.. I have Phanteks PH-F140HP and they work great. They're quiet and keep my Phenom II 1090T six core pretty cool when running IBT for 3 hours. I know the CPU cooler comes into play a lot in this though. As case fans.. not sure. I wanted to use them in my case but the design of the mounts in the case are not normal so I could not use them. I'm not trying to step on Doyll's toes or anything, just a suggestion. Maybe he could chime in.

Also, chasing bunnies.. literally?

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