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[Official] Noctua NH-D14 Club - Page 181

post #1801 of 3949
Hi guys, i have just bought the D14, going to order the rest of the PC soon, I have a question about connecting the fans... motherboard will be a Asus P8Z68-V.

I would like to use the U.L.N.A splitter but then wouldn't that keep it at 1 speed 24/7? Am i right in thinking if i use this ulna AND asus fan xpert then it wouldn't work due to not enough volts?

If i wasn't to use the U.L.N.A splitter and run at 12v can i use Asus Fan Xpert to control BOTH fans? 1 fan in CPU_FAN and 1 in CHA_FAN or CHA_FAN2 as these support Asus fan xpert.

Or Use the Y-Splitter but my understanding on that is you can only control 1 fan as 1 of the connection is 2 pin.

I hope this makes sense but basically i want to know if i can use Asus Fan Xpert on both the fans? Set a profile to increase fan speed as the temps get higher.


I think my best way to control both fans on this will be 1 in CPU_FAN and other in CHA_FAN and set them both on the same profiles?

EDIT, just looking at the P8Z68-V manual it shows the board as having a CPU_FAN & CPU_FAN_OPT header. Does the OPT stand for "Optional" for these dual fan coolers? If so that would make sense and about time lol but will an xpert run on that header?

Zvsr2.jpg
Edited by Steev08 - 9/13/11 at 12:25pm
post #1802 of 3949
I don't want to burst your bubble, but I have the same mobo and it only has PWM cpu fan control, so it won't controll the fans, they will just run full speed non stop...
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post #1803 of 3949
Apparently Noctua dont use PWM Fans?

http://forum.overclock3d.net/index.php?/topic/32394-noctua-nh-d14-fan-speed-problem/

I don't know, so my only options are..

1, Connect both to a Fan Controller.
2, Connect them to the Y Splitter = both 12v from CPU_FAN
3, Connect them to the U.L.N.A Splitters separately = both about 8v? to CPU_FAN & CPU_FAN_OPT?

I guess i will have a play when i build it, the 2 fans at 12v 24/7 will be perfectly ok if its silent anyhow lol.

Yeah, its not the MB its just because the fans are 3 pins and dont support PWM. Buy 2 new 4 pin fans and we could control them am guessing? Sak it though, am buying a fan controller anyhow so will just use the Y splitter and connect both of the fans as 1 in the controller.

Am thinking of getting this controller because it looks pretty neat and go well with the CM 690II case

http://www.scan.co.uk/products/nzxt-sentry-mesh-5-channel-30w-fan-controller-525-black

5 x 30W Channels, the NF-P14 fan only uses 1.2W according to specs so using both the D14 Fans on 1 of the channels will be WAY more than enough? Maybe overkill but i do like the look of it and will use my 2 front case fans as well as another 1 or 2 fans as well.
Edited by Steev08 - 9/13/11 at 2:04pm
post #1804 of 3949
I'm in the same boat mate.
Don't want to change the fans as from what I hear they're goodens.

Looking at fan controllers myself but I think I'll see how loud they are at 100%
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post #1805 of 3949
I have them connected to a single fan controller port with a Y splitter. Works good, on lowest it's inaudible and on high is bareable (I am a quiet freak, so I can't have it on high non stop).
It sucks when you buy a 150€ MOBO and it doesn't support 3 pin fans on the CPU socket... I mean, my 60€ Gigabyte board supported that.

I don't know if it would work by plugging the fans into the Case fan socket, since I don't know if it bases the speed off the CPU temp?

I guess that's the next thing for me to try, since I would love to have it automated because I tend to forget to ramp up the fans when gaming... and PWM fans aren't an option. I mean I shouldn't have to buy it, after spending so much on a cooler and MOBO frown.gif
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post #1806 of 3949
You not tried the ULNA cables? Going by Toms review from OC3D theres not much difference in temp and its near on silent at about 8volts. Think am going to have to have a good play with different setups and OCs on my i5 2500k

ULNA with a 4Ghz OC
Normal 12v with a 4Ghz OC

Test the noise/temp ratio see what's best. Hard to decide without a build but yeah, i didn't realise the fans were not 4 Pin PWM fans when i ordered frown.gif Should have checked tbh.

My old rig was a Q6600 AMD rig, forgot the MB was about £100 or so and a ASUS Silent Square Evo 4pin PWM controlled cooler, nice and simple, plug it in, set up the profile in asus fan xpert and sorted.
post #1807 of 3949
Yup, I had a Gigabyte board and Arctic Freezer Xtreme. 3 pin fan, worked like a charm... now I got this better PC and I have to do it manually.

And there is minor difference betwen low and high fan speed.
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post #1808 of 3949
Got this yesterday and installed today, pretty pleased with the temps (about 25C idle and 42C at 100% prime 95 smallffts with stock clocks), it replaced a be quiet dark rock advanced which was giving me fairly high load temps and also when i took it off it looked like not all of heatsink had made contact with the TIM on the CPU (this is the 2nd time this had happened, the mounting system is just rubbish).

Anyways I've tried setting it to voltage mode and read a few pages in this thread, but at idle i only get about 300RPM and about 600RPM at load, is there any way of changing this? Anyways since the temps are so good I think I'll just attach the ULNAs too for the lower noise level if there is no way to get the RPM higher than it currently is using smart fan voltage setting.

I also read this on the Noctua website, I hope this isn't the case with my motherboard (Gigabyte Z68 UD4):

"The fan doesn’t start with the Ultra-Low-Noise Adaptor (ULNA)!
Unfortunately, many Gigabyte mainboards use a special control circuit that can lead to start-up problems in conjunction with the Ultra-Low-Noise Adaptor (ULNA). This control circuit remains active even when automatic fan control is disabled in the BIOS. In these cases, please use the fan without the ULNA or connect it directly to the power supply (or an external fan controller) in order to ensure reliable operation with the ULNA."
Edited by smaudioz - 9/13/11 at 3:46pm
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post #1809 of 3949
smaudioz - go into your BIOS. On the first page find PC Health. Look in there toward the bottom. There should be a pair of settings that allow you to set the cpu fan(s) to auto control, with Voltage control mode. Then all you need is the Y-cable. No need for ULNA adapters: the motherboard will slow the fans down during idle, spin them up to max only during max load.

You'll be happy you chose a Gigabyte board.

BTW - look at the manual, p55.
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post #1810 of 3949
Quote:
Originally Posted by ehume;14928341 
smaudioz - go into your BIOS. On the first page find PC Health. Look in there toward the bottom. There should be a pair of settings that allow you to set the cpu fan(s) to auto control, with Voltage control mode. Then all you need is the Y-cable. No need for ULNA adapters: the motherboard will slow the fans down during idle, spin them up to max only during max load.

You'll be happy you chose a Gigabyte board.

BTW - look at the manual, p55.

There's nothing alike for the asus Z68 boards? I just find it wrong that on a brand new £120+ board that it doesn't slow the cpu fans down during idle and speed them up?

Or am I confusing automatic speed with Asus fan thing? Surely all boards future the lower rpm for fans when idle, but I can't use the profile manual setup of fan speed due to the fans not being pwm correct? But the mb will still auto adjust the rpm for when idle but I just don have a say as to what rpm?
Edited by Steev08 - 9/14/11 at 12:42am
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