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  #41  
Old 03-04-14, 11:09 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by Bartacus View Post
Yummy, perfect SATA spacing, for once. I never understood why power supply manufactures always left so much bloody space between SATA connectors! HDD cages have been pretty much standard for spacing since the dawn of time.
Yup, I'm very much looking forward to seeing how it looks with some disks
in it.

And agreed, HDD spacing in most cases is ridiculous, you only need a little
bit of space and a little airflow so that the air doesn't just sit there and heat
up, that's it.


Also, the build has been share by MaximumPC on Twitter and Facebook
as well as on The Mod Zoo's FB feed. Yay!

(Is it OK to post these links here? If not, apologies.)

https://twitter.com/maximumpc/status/451821285924827136
https://www.facebook.com/TheModZoo/p...38321302951013
https://www.facebook.com/maximumpc/p...?stream_ref=10

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  #42  
Old 07-04-14, 07:52 PM
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Conchubair Conchubair is offline
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Good to have you back around here with your awesome builds, looks mighty finefine..
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  #43  
Old 07-04-14, 08:06 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by Conchubair View Post
Good to have you back around here with your awesome builds, looks mighty finefine..
Thanks mate, it is indeed.

Sadly I don't have as much time as I used to to just browse around forums
(well, I don't have as much spare time as I used to in general, hence why it
took so long to get this properly moving), but I have no intention of abandoning
ship.
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  #44  
Old 08-04-14, 07:57 PM
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alpenwasser alpenwasser is offline
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Chipset Cooling & Adventures in Instability

Chipset Cooling, Adventures in Instability


As some may be aware, I originally had some issues when trying to
get this machine to run stable. While stress testing with mprime,
it repeatedly and reproduceably crashed after less than an hour,
sometimes even already after a few minutes. Each time after
crashing, it took me several tries and about 10 to 20 minutes to
get the board to POST again.

After some troubleshooting and running a few diagnostics, it
turned out that the 5520 chipset was running really hot. It's
temperature threshold as indicated by the system is 95 degrees
Celsius, and when I was last able to check on it before a crash,
it had already passed 85 deg C, so I suspected that it was bumping
up against the threshold, upon which the board did an emergency
shutoff and mandated a cooldown period until it would run again.

As an emergency fix, I took the 80 mm San Ace fan that came with
the case and mounted it to the chipset heatsink with some waxed
cotton cord, and voilŕ somewhere slightly above 70 deg C maximum.


Unfortunately I forgot to take pictures of that rather ghetto
setup before dismantling it again and replacing it with something
more solid, but I have managed to blow up some sections from
another picture that should at least give you an idea of how it
looked.


Some Improvisation

Apologies for the horrid picture quality, as said this is a blowup
from a picture of which this section is only a small part.
(click image for full res)



A More Permanent Solution

The chipset heatsink is just your run of the mill alu heatsink held
on by a spring clamp with some hooks.

(click image for full res)



And the naked chipset after cleaning off the TIM. That stuff was a
bitch to get off, it had dried up rather significantly.

(click image for full res)



Since the 80 mm fan is quite a bit larger than the chipset
heatsink itself, I needed to either replace the heatsink or modify
it in order to be able to mount the fan to it. I took a
rather crude, but very effective approach: I took an L piece of
aluminium, drilled two holes across the heatsink, cut some M4
threads on those two holes (which worked despite the holes only
going through the fins and not being continuous), then bolted the
L piece to the heatsink with two M4 screws. Works like a charm.

Don't mind the unclean alu bits from the drilling and cutting on
the heatsink between the fins, it wasn't really possible to
properly clean that off and make the holes as clean as one usually
does.

(click image for full res)



And from the other side...

(click image for full res)



The fan itself is held down by three screws, two in the L piece...

(click image for full res)



... and one in the corner of the heatsink itself. The bent fins
are from drilling and cutting the thread, they got a bit
structurally weak at their edges due to that. Doesn't impair
functionality, so not such a big deal since it won't be visible
anyway.

(click image for full res)



And the whole package:

(click image for full res)



The heatsink unit mounted on the M/B. You need to unmount the fan
to do that. You can again see the bent fins here.

(click image for full res)



And mounted, with the fan:

(click image for full res)




That's it for today, thanks for stopping by.


-aw
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  #45  
Old 09-04-14, 02:19 AM
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JayCobs JayCobs is offline
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This is awesome. I might do it to my MoBo heatsinks.
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http://forum.overclock3d.net/showthread.php?t=56390
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  #46  
Old 09-04-14, 10:07 AM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by JayCobs View Post
This is awesome. I might do it to my MoBo heatsinks.
Haha, thanks! It's a bit crude, but very effective.
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  #47  
Old 09-04-14, 12:34 PM
Gk1ngs Gk1ngs is offline
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Maybe crude, but as long as it works and it's inside a server so wont be seen anyway so all is good
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  #48  
Old 09-04-14, 02:16 PM
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alpenwasser alpenwasser is offline
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Quote:
Originally Posted by Gk1ngs View Post
Maybe crude, but as long as it works and it's inside a server so wont be seen anyway so all is good
Precisely my line of thinking.


I must admit, I would have loved to make this build all pretty and such, I
even had a colour scheme: Powdercoat the interior black, make purple
custom cables. I think the purple might have gone well with the green PCBs
of all those server parts if it's the right shade.

But alas, it just doesn't really make sense from a financial POV (my dad is
paying for part of the build since he uses it for his business too), and even
if, I don't have the time at the moment to go that far with it.

Still, I have grown very fond of this machine and the mods I've done on it,
it might not be the prettiest thing ever, but it does get the job done, and
done well, which is what I set out to do above all else.
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  #49  
Old 09-04-14, 08:25 PM
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alpenwasser alpenwasser is offline
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Disk Ventilation


Although disks have become quite frugal when it comes to
power consumption these days (at least some of them) and HDD
cooling is not really a huge issue for most people, packing
24 disks as closely together as in this build will cause
heat issues without ventilation. There is no need for 3k rpm
Delta fans though, a whiff of cool air breezing over the
disks should do the job nicely.

For this purpose, as you may have seen in some previous
pics, I have chosen 6 120 mm Papst fans, specifically the
4412 GLL model, and am running them at 7 V. The fans draw
air in through a vent area, and it then gets passed through
the M/B compartment and out the back.

Each fan is fixed to a rail riveted to one of the disk rack
panels with two screws.


You've seen this before, but for completeness' sake I'm
adding the pics of the bushings used to prevent the fan
frames from being crushed to this update as well:

(click image for full res)



I exchanged the copper screws for some silver ones, and in
the process added some dampening foam between the mouning
rails and the fan frame.

(click image for full res)



The whole fan panel assembly:

(click image for full res)



While doing some test runs, I noticed that a rather large
amount of air was being expelled through the front of the
case instead of going into the M/B compartment and out the
back (I wasn't really surprised by this seeing as how open
the front was). Obviously, this was not optimal. So I took a
1.5 mm panel of alu and bolted it to the front.

Because the existing front has a few folds in it, I needed
to do some cutting on the case first.


(click image for full res)


(click image for full res)


(click image for full res)


(click image for full res)



After having done that, I turned my attention to the side
panel, making an opening for the ventilation. I thought of
several ways of doing this, but all of them were a bit more
complicated than I'd have liked them to be. Cutting such a
big hole with a dremel isn't really practical, so I
considered doing it with our jigsaw, but after doing a few
test cuts I didn't really like the result as I couldn't get
a straight enough cut. And the cut needed to be clean,
because there's no space to fit a U channel over the edge,
and I don't really like the idea of covering it up on the
outside.

Anyway, the guy just used a nice big angle grinder for the
cut, and since he's a metal worker by trade, it turned out
almost perfectly straight (not 100%, but it's still cut by
hand, after all ). After that, I painted the bare edge
with some model paint to not have the blank metal staring at
me.

I thought about painting the mesh, but at the moment I don't
really have the time, plus I kind of like the look of this
bare piece of alu, so I've left it as-is.

(click image for full res)



The mesh doesn't cover the whole fan area (nor is it very
open with those rather narrow slots), but there is no need
for high-power ventilation here, so this is not a big deal.

(click image for full res)


It's fixed to the inside of the panel with some double-sided
adhesive tape.

(click image for full res)



And in its final config:

(click image for full res)



Drive temperatures hover between 28 deg C and 35 deg C at
the moment, ambient is about 23 deg C.


Until next time,
-aw
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  #50  
Old 09-04-14, 09:06 PM
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Feronix Feronix is offline
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Now that's... industrial

I love it!
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