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Fractal Design R5 + Noctua D15 + Noctua A14 FLX - general help / questions - Page 2

post #11 of 35
Thread Starter 
Ok I swaped D15 to D15s, added one A15 as 2nd fan and 2x AF14 PWMs instead of the FLX
good now? thumb.gifthumb.gif

For my information:

the top front intake als PWM with CPU cooler and the bottom with GPU right?

so my final setup will look like this:

2x front intake PWM (top one CPU header, bottom one GPU header)
1x bottom intake DC
1x rear exhaust DC
Edited by tehelelol - 10/20/15 at 2:31pm
post #12 of 35
Quote:
Originally Posted by gftgy View Post

In most circumstance, an intake is going to be met with some obstruction for resistance, like a hard drive bay. This means that a fan that directs its airflow over the bay with greater air pressure will typically perform better than a fan that blows it to the sides when used as an intake. That is to say, the Fractal GP-14 which disperses its airflow in a perpendicular fashion will simply perform better as an exhaust fan than it will perform as an intake fan.

However, it could still actually be ideal for exhaust if the exhaust is faced against a wall. If the exhaust already directs the airflow perpendicular to the wall, then the air pressure doesn't have to fight against the wall to be redirected. Outside of this usage scenario, however, it is largely indifferent.
Basically it make little difference what the fan's airflow pattern is.
Quote:
Originally Posted by gftgy View Post

Yes, adding a "PSU powered PWM splitter" is adding "another layer of control complexity." That is to say, tehelelol would need to go out and purchase another product in order to control it, thereby adding in another layer of complexity as opposed to controlling fans directly via the R5 fan controller or the motherboard.
No, it is removing the FD fan controller and replacing it with a PWM splitter.
Quote:
Originally Posted by gftgy View Post

We don't have to disagree on everything, do we?
Of course .. not. biggrin.gif Fact is we often agree.
Quote:
Originally Posted by gftgy View Post

I wasn't talking about motherboard fan headers. I was talking about the fan controller integrated into the Fractal R5 case, which is powered by a SATA connection to the PSU.
FD fan controller is rated similar to motherboard fan headers.
post #13 of 35
Quote:
Originally Posted by tehelelol View Post

Ok I swaped D15 to D15s, added one A15 as 2nd fan and 2x AF14 PWMs instead of the FLX
good now? thumb.gifthumb.gif
The NF-A15 fan supplied with NH-D15S is a 1500rpm fan. The accessory NF-A15 fan is 1200rpm. Same model number but not same rpm.
post #14 of 35
Somewhat similar setup, I just strived for a positive pressure air-tunnel effect on mine (with an additional side intake above the GPU).




Not sure if it's the most optimal configuration but it works well enough.

Paying an extra premium for top-of-the-line RPM fans for case ventilation is IMHO just a waste of money. A few hundred RPM difference is hardly anything; how often do you plan on having them go at full blast, making more noise than it's worth?

As for PWM I'd say go for it. Being able to set the motherboard BIOS to control the fans' RPM curves based on CPU temp is just too convenient to not pay that little extra for.
    
CPUMotherboardGraphicsRAM
Intel i7 6700K @ 4.8 ASUS Z170 Pro Gaming GALAX / KFA2 GTX 980 Ti HOF 16GB Corsair LPX 3000Mhz CL15 DDR4 
Hard DriveHard DriveHard DriveHard Drive
SSD Samsung 850 EVO 500GB HDD HGST 4TB HDD WD 500GB HDD Samsung 500GB 
CoolingOSMonitorMonitor
Noctua NH-D15 Windows 10 Pro N BENQ XL2430T 144hz TN BENQ GW2250HM 60hz VA 
KeyboardPowerCaseMouse
Corsair Gaming K70 MX Red Chieftec Super Series 850W Fractal Design Define S Logitech G502 
Mouse PadAudioAudio
Zowie Swift Creative Sound Blaster Z Beyerdynamic DT 770 Pro 250 Ω (headset mod) 
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CPUMotherboardGraphicsRAM
Intel i7 6700K @ 4.8 ASUS Z170 Pro Gaming GALAX / KFA2 GTX 980 Ti HOF 16GB Corsair LPX 3000Mhz CL15 DDR4 
Hard DriveHard DriveHard DriveHard Drive
SSD Samsung 850 EVO 500GB HDD HGST 4TB HDD WD 500GB HDD Samsung 500GB 
CoolingOSMonitorMonitor
Noctua NH-D15 Windows 10 Pro N BENQ XL2430T 144hz TN BENQ GW2250HM 60hz VA 
KeyboardPowerCaseMouse
Corsair Gaming K70 MX Red Chieftec Super Series 850W Fractal Design Define S Logitech G502 
Mouse PadAudioAudio
Zowie Swift Creative Sound Blaster Z Beyerdynamic DT 770 Pro 250 Ω (headset mod) 
  hide details  
Reply
post #15 of 35
Thread Starter 
The Asus ROG Maximus VIII Hero got 6x 4 PIN PWM fan slots so I don't need any adapter right?
Thanks for feedback and your support.

@doyl, I am gonna run both at 1200 rpm I guess for same cooling but almost no noise at all. I just read a review that's why I decided quick to add another AF15 1200 RPM fan.
A bit cooler than with single 1500 but at 1200/1200 only 4 instead of 8 dbA.
post #16 of 35
Should be fine assuming the mobo actually does have 6 PWM headers. Manufacturers have said things like this before when they were not.
post #17 of 35
I think the Maximus VIII Hero has two true pwm headers: one of them split between CPU_FAN and CPU_OPT (the former will get the tach reading), and the other being W_PUMP. I believe the others are voltage-controlled headers.

I could be mistaken, however. I don't have my hands on this board, and they are marketing it with "hardware-level 4-pin PWM/3-pin DC mode detection" for use with their Fan Xpert 3 software.

Still, even if it only has two pwm headers, that's one more than most motherboards have.
post #18 of 35
Quote:
Originally Posted by gftgy View Post

I think the Maximus VIII Hero has two true pwm headers: one of them split between CPU_FAN and CPU_OPT (the former will get the tach reading), and the other being W_PUMP. I believe the others are voltage-controlled headers.

I could be mistaken, however. I don't have my hands on this board, and they are marketing it with "hardware-level 4-pin PWM/3-pin DC mode detection" for use with their Fan Xpert 3 software.

Still, even if it only has two pwm headers, that's one more than most motherboards have.

The manual shows all headers being selectable in BIOS as DC or PWM. This was the case on Z97 boards, so unless they took a step back (which I doubt), the Z170 holds the same.
post #19 of 35
Quote:
Originally Posted by ciarlatano View Post

The manual shows all headers being selectable in BIOS as DC or PWM. This was the case on Z97 boards, so unless they took a step back (which I doubt), the Z170 holds the same.
Not to be pessimistic, but mobo manuals have said this before and it was not at all true.

Here's an ROG forum thread of similar problems .. "PWM" headers that LED light dim at lower fan speeds.
https://rog.asus.com/forum/showthread.php?49747-Problem-with-PWM-mode-on-CHA_FAN4-connector-Maximus-VII-Hero

Hint: PWM headers supply constant 12v to the fan. Normally this 12v goes directly to LEDs while internal PCB pluses 12v only to motor, not to LEDs. .. Variable voltage obviously does not have constant 12v power for LEDs, so their light dims as voltage is lowered.
post #20 of 35
Quote:
Originally Posted by doyll View Post

Not to be pessimistic, but mobo manuals have said this before and it was not at all true.

Here's an ROG forum thread of similar problems .. "PWM" headers that LED light dim at lower fan speeds.
https://rog.asus.com/forum/showthread.php?49747-Problem-with-PWM-mode-on-CHA_FAN4-connector-Maximus-VII-Hero

Hint: PWM headers supply constant 12v to the fan. Normally this 12v goes directly to LEDs while internal PCB pluses 12v only to motor, not to LEDs. .. Variable voltage obviously does not have constant 12v power for LEDs, so their light dims as voltage is lowered.

That was actually a bug in that board. I have several Z97 ASUS boards and all work correctly. So.....assuming the board is not defective.....
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