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[Official] Noctua NH-D14 Club - Page 38

post #371 of 3947
Quote:
Originally Posted by rms View Post
People have certainly done this. I'm going to try it with a pair of Panaflo M1A (~80cfm 38mm 120mm) fans which I have from my previous build, leaving the middle stock fan in place. I'll also attempt a simple shrouding experiment using either plastic wrap or aluminum foil to prevent air from bleeding out around the fans, to see what effect it has. Hopefully within a day or two!

rms
lol.. hurry up >_< me want to see the resultssss. curiosity is killing me. haha.
Im just asking though I don't think I would personally every use a fan to cool my cpu thats over 28 DB, but I think i prefer 19 DB or lower.
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post #372 of 3947
When I get to my own D14 testing I'll be sliding a Kaze Maru 1900 rpm fan in there, and then a KM2 1700. But won't anyone else try it first?
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post #373 of 3947
Quote:
Originally Posted by rms View Post
Hello! My DH-14 will be arriving today, along with a Phenom2 955, Gigabyte's new 890gx motherboard, Dominator ddr3-1600 ram (yes i'll be removing the heatsink extender on these), and AS5.

I do have questions:

1) Should I use the included DH-14 heatsink compound or the AS-5 ?

2) Anyone running this motherboard?

3) Anyone tried different, higher output fans on the DH-14? Specifically, I'm looking at this article:
http://http://www.bit-tech.net/hardw...est-case-fan/3
who's tests show the Noctua NF-P12 is a relatively poor performer, with only 36cfm. A related article
http://www.bit-tech.net/hardware/coo...est-case-fan/5
suggests the Scythe Gentle Typhoon D1225C12B4AP-14 with 61cfm.

In addition, a newegg review of the Gentle Typhoon suggested a very similar fan, the Servo Gentle Typhoon
http://www.aerocooler.com/shop.cart?..._id=FAND12B515

So, I guess I'm asking if higher cfm fans would produce any significant temp drops on the DH-14, and asking for some quantitative A vs B results

rms
1) AS5 is not as good as Noctua's Thermal Interface Material (TIM). AS5 was the first really good TIM but it is somewhat dated. Google for TIM reviews and you'll see just how good Noctua's TIM is.

2) I haven't seen anyone put a NH-D14 on any board with a 890GX/FX motherboard but I'm pretty sure you could get it to work. Verify with Noctua's compatibility list to be sure.

3) The reviews I read of the NH-D14 tested it with the same fans they test all their HSF units with, in order to maintain a degree of objectivity. The conclusion was that the 140mm fan is fantastic, and the 120mm fans are good at the nearly-silent noise-level. If you want better cooling at the cost of additional noise, swap the fans out for something better. Just remember you can't use x38mm fans as they won't fit in between the two towers.
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post #374 of 3947
Ok, *preliminary results*. After some incredibly scientific testing with plastic wrap, 2 Panaflo M1As, and quantities of rubber bands:

This is a brand new build. I had not done any stability testing under load until mid-way through this, so bear with me.

Running just at idle, first I tried wrapping plastic wrap around the all stock heatsink (not the bottom, just sides), then replacing the stock outer intake fan with a Panaflo, then with 3 fans, Panaflos on intake & outtake, and stock fan in the middle (I have nothing to replace this yet).

BTW, the Panaflos at full speed are certainly audible, but not obnoxious, even with the side cover off, but this was not an ideal application for them. They have a large central motor, and I strapped them directly onto the heatsink, so there would be a large deadspot in front of the motor, and they wouldn't be providing much airflow to the center of the heatsink. A blower fan of some kind would be a better intake fan choice, or at least adding a 'standoff box' to mount the Panaflo some distance from the side of the heatsink.

Here are some idle temps:
3.9ghz 1.45v (955 BE C3)
stock 34/42 (cpu/system temps in C)
shroud 33-34/45
intake 34/44
in/out 33/39

So the shroud had little or no effect, and replacing the intake fan had little or no effect.

But adding an outtake fan on the left gave a huge 5C drop in the system temp. This is likely an artifact of my old case, which has no exhaust fan opening in the back, so alot of the outtake fan's air is just blowing around the chipset area. But for me now, this is a big plus, and this added fan is dropping system temps even more under load, probably by 15C or more. It is not clear, however, that the outtake fan has any effect on cpu temps.

These results are I think consistent with the SPCR review of the NH-D14, which noted that the stock intake fan did little, and that the middle fan was doing most of the work of moving air. Replacing the middle fan with a higher flow model is the next logical step to try, but I don't have one now.

I also did some simple load testing with Prime95 and Seti@home to stress all 4 cores, and can now run at 4ghz pretty reliably at full load (I say 'pretty reliably', as I'm stopping the tests after temps stabilize, 15min at the most), and this is as far as I've gotten:

4.029ghz 1.6v vcore load Seti@home
206 bus, raised all NB volts 2notches
in/out 62/43

So the cpu is maxing out around 62C, even with a very high 1.6v vcore (1.4v stock). I want to run below 60C though, so I'll be backing off of these settings. And note that the system temp is only up to 43C from 39C idle, even with higher freq/voltages; that outtake fan is really helping.

Future tests:

1) replace the middle fan
2) Load test with stock intake fan (or even no intake fan at all)
3) Load test with no shrouding
4) Test with a blower-type fan on the intake.

The upshot is that since replacing intake & outtake fans had so little effect on cpu temps, has the performance limit for this heatsink been reached? Just how important is that middle fan?

rms
post #375 of 3947


Intel Test Platform
Component Brand/Model Pricing
Processor Intel Core i7 920 Click Here
Motherboard Intel DX58SO Click Here
Memory Kingston DDR3 3GB 1333MHz ValueRAM Click Here
Video Card ATI X1950 XTX Click Here
Hard Drive Western Digital 250gb SATA Click Here
Power Supply PC&C Silencer 750 Quad Click Here
Chassis Ultra M998 Click Here
Operating System Windows Vista Ultimate (64bit

[IMG][/IMG]



Turning up the heat a little with the system overclocked to 3.5GHz, the NH-D14 is really starting to shine beating the Cooler Master V10 by 2.25 degrees, and it is a massive 21.25 degrees ahead of the stock Intel cooler.

With the system overclocked to 3.5GHz the heat is on and the H50 moves up a spot on the chart ahead of the Thermalright Ultra 120, but they are still neck and neck with only a 0.25 of a degree separating them.

What if…



Now I decided to try out the system with two fans because I knew our readers would ask if we had them and what the temps would be. So I mounted up the H50 system with a pair of Noctua NF-P12 120mm fans in the exhausting configuration, and I was pleasantly surprised.



The temps dropped a fair amount, into what most would consider very nice. 63.88* C is a very nice temp and would give the Cooler Master V10 a run for its money.

In the end Intel Core i7 920 overclocked to 3.5

Corsair H50 Noctua NF-P12 120mm fans = 63.88c

Noctua NH-D14 = 62.25c

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post #376 of 3947
I did this test myself..results in the Link in my sig
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post #377 of 3947
I don't know if someone posted this already.

http://www.xbitlabs.com/articles/coo...4_7.html#sect0


Edited by whoisron - 4/5/10 at 12:08pm
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post #378 of 3947
Quote:
Originally Posted by R1P5AW View Post
I did this test myself..results in the Link in my sig
What these tests make me suspect is that the H50 is held back by the small radiator.

The simple calculations on this page http://www.swiftnets.com/forums/viewtopic.php?t=993#top

show that, depending on the temp diff between the water coolant & ambient, significant gains could be gotten just by using a dual radiator.

After all, the DH-14 essentially has twice the radiator area of the H50, with twice the number of fans.
post #379 of 3947
Can someone tell me if the NH-D14 will fit in an Antec 900 case Midtower? http://www.newegg.com/Product/Produc...82E16811129021 I have an artic freezer cooler rev 2 installed at the moment which is giving some mid 80 temps at full load/20 pass using IBT/OC at 3.8.

Thanks.
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post #380 of 3947
Well guys I would like to join the club also. I ordered my NH-D14 today as well as the rest of my parts for my rig today..Ill post some pics when it gets here thursday or friday. I can't wait to see this beast in person...Please add me. Here is a really good review from youtube...I am not sure if this was ever posted:film_go.pngYouTube- Noctua NH-D14 Review
Edited by GuardDawg30 - 4/6/10 at 3:10pm
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