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Noctua NH-D14 Horrible Performance Beaten By Cogage True Spirit Need Help 56K Warning - Page 3

post #21 of 23
Thread Starter 
I did some due diligence and did an apples to apples test by mounting my Akasa Vipers on the D-14 via zipties and rubber bands. I did a couple of runs of 5 IBT runs on maximum stress. One run was with the Vipers on the PWM cpu fan header and the next was in one of the regular fan headers wide open. I noticed that the max RPMs on the PWM were just under 1600. On the regular header, it was over 1800. After those two runs, I put the stock Noctua fans back on. I used the same seating for all tests so I could rule that out. Turns out the seating of the heatsink must not have been so great. Anyway, on to the results.

Core i7 930 @ 3.8 GHz vcore normal (1.21250) IBT Max Stress 8 Threads 5 Runs

2 Akasa Viper Fans (PWM) Ambient temp max = 22.9
Max for each core 69 67 67 66 AVG = 67.25 Delta = 44.35

2 Akasa Viper Fans (Full) Ambient temp max = 22.9
Max for each core 68 66 66 66 AVG = 66.5 Delta = 43.60

Stock Noctua Fans (Full) Ambient temp max = 22.8
Max for each core 72 69 69 69 AVG = 69.75 Delta = 46.95

So, apples to apples, the Akasa fans perform 2.6 to 3.35 degrees C better on the D-14 than the stock fans. TheVipers were noticeably louder when running full around 1800 RPMs than when on the PWM setting. Given the less than 1 degree C difference, the sound isn't worth it. However, my GTs are still louder. If I have those on full blast, I really can't hear the difference between the Noctua fans and the Vipers. However, if I turn the GTs down, there is a definite difference in the Noctuas' favor.

I'm going to try a couple of more reseats with different TIM application methods until I find something that works better. I may also make my own spacers so that I can get better pressure on the CPU.
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post #22 of 23
I have to say, after reading your posts, that you have rediscovered an ancient verity: when not dealing with junk, louder fans make cooler temps.

But why are you frustrated? 47c TOA with your chip and Vcore is an average result. Be at peace.

I've just finished solo fan testing on my own D14. With an 860 (admittedly a hotter running chip than yours) at 4GHz and a Vcore of 1.312v, I'm getting 49.3c to 49.9c TOA with the stock fans. I'd say they're roughly comparable. I could get the same with my Megahalems in the same rig, but with a 40dBA fan.

The main benefit you get with a D14 is the quietness . . . while running a high OC.
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post #23 of 23
Thread Starter 
I got my Silver Arrow today and man, what a difference. I seated the new heatsink tonight, and I have to say, it's definitely not as user friendly as the Noctua. I don't think I did that good of a job on the first try. However, I did a quick run of 5 IBT passes at 3.8, just like all the other tests I've run in this thread. Ambients were 22.0 to 22.8, just like the other tests in this thread. However, max temps were as follows:

64 62 62 63 Avg. 62.75. I'd say that's awesome improvement.

I bet I'll pick up another degree or two when I reseat this weekend now that I have a better grasp on how to do it. Another pleasant surprise was that I was able to mount this thing over my G.Skill Ripjaws RAM without removing the heatspreaders. Don't get me wrong, the front fan is sitting on the RAM, but it works. I'm very pleased.
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Black Sunshine II
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120GB Intel 510 SSD Samsung 1TB WD LiteOn iHAS324-98 Y Cougage Tru Spirit (lapped) with Akasa Viper Pu... 
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Overclock.net › Forums › Cooling › Air Cooling › Noctua NH-D14 Horrible Performance Beaten By Cogage True Spirit Need Help 56K Warning