[TPU] Noctua Presents NH-U12A Premium Class 120mm CPU Cooler - Page 9 - Overclock.net - An Overclocking Community

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[TPU] Noctua Presents NH-U12A Premium Class 120mm CPU Cooler

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post #81 of 90 (permalink) Old 05-17-2019, 12:54 AM
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Quote: Originally Posted by AlphaC View Post
http://blog.livedoor.jp/wisteriear/a...074190742.html


Cooling an i9 in Aviutl+x264 , on par with NH-D15S albeit with higher fan speed
that sounds about right.

but on a serious note, the single-fan U12A matches the U12S at the same RPM.
this does imply that the only thing good about the U12A is that the fan can rev. higher and has two of them.

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post #82 of 90 (permalink) Old 05-18-2019, 04:19 PM
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Quote: Originally Posted by AlphaC View Post
http://blog.livedoor.jp/wisteriear/a...074190742.html


Cooling an i9 in Aviutl+x264 , on par with NH-D15S albeit with higher fan speed
Higher fan speed but at same noise levels, right? So because its form factor and better sound signature of NF-A12x25, is NH-U12A the best "sound wise" cooler for an i9-9900K, or that CPU is water dependent (for low OC obviosly with good air flow and good ambiente temperature)?

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post #83 of 90 (permalink) Old 05-18-2019, 04:24 PM
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Quote: Originally Posted by EniGma1987 View Post
Quote: Originally Posted by The Robot View Post
Yeah, 9900K alone can draw 200W. Noctua is for 95W max, that's my guess.

Id peg it as closer to 140-150W max. The basic stock POS coolers that come with CPUs and especially older gen CPUs with no heatpipes, small amount of fins, and a sucky fan were even rated for 95w. This Noctua is significantly better than those were.
Of course an overclocked 8 core CPU can draw 200w at 5Ghz. At stock with MCE enabled it pulls 145w. Manual overclocking a 9900k draws around 140 @ 4.8Ghz on all cores.

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post #84 of 90 (permalink) Old 05-19-2019, 06:49 AM
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Quote: Originally Posted by WannaBeOCer View Post
Of course an overclocked 8 core CPU can draw 200w at 5Ghz. At stock with MCE enabled it pulls 145w. Manual overclocking a 9900k draws around 140 @ 4.8Ghz on all cores.
I was talking about the cooler rating....

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post #85 of 90 (permalink) Old 05-19-2019, 09:01 AM
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Quote: Originally Posted by WannaBeOCer View Post
Of course an overclocked 8 core CPU can draw 200w at 5Ghz. At stock with MCE enabled it pulls 145w. Manual overclocking a 9900k draws around 140 @ 4.8Ghz on all cores.
My 8700k draws 140w during AVX loads at 4.5Ghz all core.
A 9900k draws 200W easy at all core 4.7Ghz and over 250W at 5Ghz.

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post #86 of 90 (permalink) Old 05-19-2019, 09:10 AM
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Quote: Originally Posted by Cryptedvick View Post
My 8700k draws 140w during AVX loads at 4.5Ghz all core.
A 9900k draws 200W easy at all core 4.7Ghz and over 250W at 5Ghz.
Funniest thing I've read all day.

Edit: My sources

https://www.gamersnexus.net/guides/3...-duration-z390

https://www.anandtech.com/show/13400...600k-review/22

https://www.anandtech.com/show/12963...board-review/8
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Last edited by WannaBeOCer; 05-19-2019 at 09:23 AM.
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post #87 of 90 (permalink) Old 05-19-2019, 09:55 AM
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First graph shows blender AVX loads, not stress testing AVX loads and uses the in built auto overclocking functions of different mobos. Steve is the man when it comes to pc hardware testing and such, but in the link you posted he is investigating a different thing entirely, Intel's TDP.

Second graph makes me laugh, 192W at 5Ghz, I can draw 240W with my 8700K at 5Ghz with P95 AVX loads and around 186 with IBT and 200W or slightly more with other stress tests. They're using POV Ray as a test for power draw, which for example right now, running at 4.5Ghz 1.13v (did a quick test) drew a max of 108W. Even intel burn test 2.54 draws ~120W and P95AVX ~141W and these are results that I ran right now. personally, I rate my overclocks with IBT, Realbench and OCCT since P95 AVX is a little too extreme.

Third graph also makes me laugh with 153W at 5Ghz with 1.29v. First of all, even with the low voltage of 1.29v, for 5Ghz, the chip would pull more than that easy.

Below you can see my results on my 8700k at 4.5Ghz vs 5Ghz during gaming, benchmarks and stress testing where you can see temps, power draw and voltages. These are real world results.

You have to understand that the absolute most important thing is what they are using for stress testing or to determine max power draw. If they use something like Blender or POV Ray or whatever other application that does indeed stress the CPU, but not as much as it should (or could), then in my opinion that would not be valid results because during different circumstances, you could get more power draw from the CPU and higher temps. When you overclock you need to properly stress test the CPU with good programs such as Intel Burn Test, prime95, AIDA64, OCCT, Realbech. P95 with AVX being the most extreme one. Then you can see actual peak power draw and peak temps, not some bs loads in POV Ray or whatever. Even running Cinebench R15 or R20 draws more from the CPU. Vcore is the major player tho. There could be chips out there that have a very big difference in vcore for a set freq like 5Ghz and they would get different results on the same stress test.
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Last edited by Cryptedvick; 05-19-2019 at 10:08 AM.
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post #88 of 90 (permalink) Old 05-19-2019, 10:06 AM
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9900K 5Ghz @ 1.20v~1.25v is pretty good, i've heard some needed like 1.29v or even 1.33v to get a stable 5Ghz.

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post #89 of 90 (permalink) Old 05-19-2019, 10:30 AM
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It depends on the workload and chip quality.

Typically i9-9900k peaks around 200W , Prime95 AVX2 small FFT without offset is an edge case.

https://www.kitguru.net/components/l...ighty-price/6/
Blender @ 5GHz = 205W CPU power (They use Cybenetics to monitor power draw and not software or a current clamp)

200W package power per hwinfo in Prime95

https://www.hardocp.com/article/2018...n_cpu_review/6
217W package power in Prime95


https://www.legitreviews.com/intel-c...marks_208526/9
220W max per hwinfo64 @ 5.1GHz in Cinebench using a cheaper Z370 STRIX board with 4 PWM phases

I've seen Gigabyte's initial overclock guide with i9-9900k showing package power 250W while testing in Prime95 AVX2.
https://www.gigabyte.com/FileUpload/...le/525/946.pdf

An "average chip" per MSI uses 1.32V for 5GHz:
https://www.msi.com/blog/intel-9th-c...0-motherboards

Korean Review showing 20W variance of multiple samples:
https://quasarzone.co.kr/bbs/board.p...187337&sca=CPU

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post #90 of 90 (permalink) Old 05-19-2019, 10:56 AM
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Quote: Originally Posted by AlphaC View Post
It depends on the workload and chip quality.

Typically i9-9900k peaks around 200W , Prime95 AVX2 small FFT without offset is an edge case.

https://www.kitguru.net/components/l...ighty-price/6/
Blender @ 5GHz = 205W CPU power (They use Cybenetics to monitor power draw and not software or a current clamp)

https://www.youtube.com/watch?v=95Ujni7-fVM
200W package power per hwinfo in Prime95

https://www.hardocp.com/article/2018...n_cpu_review/6
217W package power in Prime95


https://www.legitreviews.com/intel-c...marks_208526/9
220W max per hwinfo64 @ 5.1GHz in Cinebench using a cheaper Z370 STRIX board with 4 PWM phases

I've seen Gigabyte's initial overclock guide with i9-9900k showing package power 250W while testing in Prime95 AVX2.
https://www.gigabyte.com/FileUpload/...le/525/946.pdf

An "average chip" per MSI uses 1.32V for 5GHz:
https://www.msi.com/blog/intel-9th-c...0-motherboards

Korean Review showing 20W variance of multiple samples:
https://quasarzone.co.kr/bbs/board.p...187337&sca=CPU
I would say you are pretty much correct.
der8auer's video you posted is a pretty nice example where you can see actual package draws with non AVX loads. His P95 12k FFT running about 195W is pretty impressive, considering he's running at 1.23v vcore which is really nice to say the least.
Doing a quick P95 non AVX test, it drew for me 112W, which is under the 120W of IBT. At 5Ghz the differences would be much bigger. I could boot up my 5Ghz OC and do some quick tests for comparison but I'm sure there are plenty of results online for both 8700k and 9900k during non AVX and heavy AVX loads.

Bottom line is that you can expect a 9900k to draw 250W depending on how good the chip you got is and what you test it with.
Best case scenario, maybe you'll get a chip that needs really low voltage for 5Ghz and then you won't really see over 200W under non-P95 AVX loads. However, no matter how good the chip is, it will go towards 250W at 5Ghz under P95AVX2.

C2D 6750 -> C2Q 6600 -> C2Q 9550 -> i7 2600k -> i7 8700k
8800GT -> 8800GTS 512 -> GTX285 -> GTX480 -> GTX580 -> GTX780ti -> GTX980ti -> GTX1080ti
R.I.P. Daniel Costin (Syrillian)
Animal Mother
(19 items)
CPU
i7 8700k 5Ghz/4.8Ghz uncore 1.39v delid
Motherboard
Asrock Z370 Taichi
GPU
MSI GTX 1080Ti GamingX @ 2063Mhz/6000Mhz
RAM
16GB Corsair Vengeance 3600Mhz CL16 1.4v Hynix
Hard Drive
Kingston UV400 240GB
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Western Digital Red 2TB
Hard Drive
Western Digital Green 2x3TB
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WD Elements 2TB
Power Supply
Corsair TX750W V2
Cooling
Noctua NH-D15 w/MX4
Case
Cooler Master 690 II Advanced + 7 case fans
Operating System
Windows 10 x64
Monitor
LG 29UM69G 2560x1080 @ 75Hz
Keyboard
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Mouse
Redragon Titanoboa 2
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Last edited by Cryptedvick; 05-19-2019 at 11:04 AM.
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