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Is the Noctua U12S smaller heatpipes meant to be loose? Pics inside.

post #1 of 17
Thread Starter 
Just trying to find out if this is by design. My suspicion is that it is, but I'm looking to other owners for confirmation. They move around a little bit.

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Hannah
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post #2 of 17
I do not believe the pipes should not be loose. Some of the bottom fins are designed not to contact all pipes, but top ones should. That's the purpose of the fins; to draw heat away from pipes.
Quote:
To ensure good thermal conductivity between the different components, the five nickel plated copper heatpipes and aluminum fins of the NH-U12S heatsink soldered together. Soldering decrease thermal joint resistance between the two components and helps to ensure daily heating and cooling cycles don't loosen connections months down the road.
http://www.frostytech.com/articleview.cfm?articleID=2749

I know, it's Frosty, but still applies.

Email Noctua support with your picture and description asking if it should be that way.
http://www.noctua.at/main.php?show=support&lng=en
Edited by doyll - 3/28/14 at 11:56am
post #3 of 17
Thread Starter 
Thanks for the reply. I inspected further and it looks like they aren't heatpipes but 2 rods on each side that go down to the bottom most fin. I'm not sure what purpose they serve or if they are supposed to move in any way.

You can see them here http://www.frostytech.com/articleview.cfm?articleid=2749&page=2

Top right picture of the rear of the heatsink, the rod goes through the s of the watermark. There's one on each side. You can turn them and pull them a little. That may be by design. I simply don't know know. I also sent an email to Noctua asking them about it. I'm thinking it's by design judging by the curves at the end of each side. Seems intentional.
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post #4 of 17
Thread Starter 
Found 2 videos on Youtube that show what I'm talking about.

https://www.youtube.com/watch?v=KNm_l4xbOk4

https://www.youtube.com/watch?v=F-VlWZaYyrM
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post #5 of 17
I have the U14S, which is very similar to the U12S. The two rods are definitely not loose on my unit, and definitely do not rattle.
post #6 of 17
Thread Starter 
Just got the replacement unit, and this one doesn't have the rods AT ALL. Wow, is Noctuas QC this bad?

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post #7 of 17
Thread Starter 
(My bad. Double Post)

The rods obviously serve some purpose, otherwise they wouldn't be in the units.

rolleyes.gif
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Hannah
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post #8 of 17
Thread Starter 
Quote:
Originally Posted by saelz8 View Post

(My bad. Double Post)

The rods obviously serve some purpose, otherwise they wouldn't be in the units. Spend all this money on manufacturing such good cooling heatsinks, but don't spend the money on making sure their products are put together properly.

rolleyes.gif
Hannah
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Hannah
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post #9 of 17
Quote:
Originally Posted by saelz8 View Post

Warning: Spoiler! (Click to show)
Just got the replacement unit, and this one doesn't have the rods AT ALL. Wow, is Noctuas QC this bad?

]

There QC isn't bad. you got to remember that things will slip through the cracks. The QC is actually very good, I have not seen a faulty heatsink on here until now
post #10 of 17
Well they(noctua)tends to change the design of some heatsink

For example I noticed that the design of the nhd14`s base from 2011 was different from 2013.

Same with this...
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