Odroid C2 + Cogent.design heatsink/case combo

Guides and tutorials for various stuff. Posted by DietPi users.
User avatar
Fourdee
Site Admin
Posts: 2746
Joined: Tue Feb 06, 2007 12:36 pm

Odroid C2 + Cogent.design heatsink/case combo

Post by Fourdee » Thu Oct 06, 2016 5:27 pm

Intro:

Cogent.design: https://cogent.design/

The Cogent.design Odroid C2 case is a heatsink + metal case, built into one complete and gorgeous unit:
1.jpg
The heatsink design is built into the top section of the case:
top.jpg

How does it perform as case?

Positives:
  • Its a heatsink and case, all built into one.
  • Although the CPU will transfer all heat to the case, other components will heat up. This has been thought out well in the case design and features various slots and holes for air ventilation
  • The metal finish on the exterior of the case is exceptional, with a glistening brushed finish and no sharp edges, high quality craftsmanship throughout and it shows.
  • The thickness of the metal is roughly 3mm thick, its extremely high quality and exceptionally strong.
  • There is also a satisfying weight to the case, it feels like its built to last.
  • The case is provided with 4 adhesive, soft gel feet pads to prevent slip.
  • There is only 2 parts to the case, a top and bottom.
  • Both the top and bottom parts of the case, appear to be created from a single mold with no additional welding.
Negatives:
  • No EMMC access has been built into the design. Would require removal of the bottom section for access. EDIT: Upgrade case with EMMC access: https://cogent.design/?product=odroid-c ... -enclosure
  • There is no access to GPIO built into the case design. The top section would need to be removed for access.

How does it perform as a heatsink?
When we consider the heat will be dissipated through the whole case, with a large surface area, one should expect great results.

Lets run some CPU stress tests:
I ran two Odroid C2's at the same time, one with the Cogent.design case, and the other with the stock heatsink and case from Odroid.
stress.jpg
The stress tests consisted of a CPU burn on all cores, for 10 minutes using the following commands:

Code: Select all

apt-get install -y stress 
stress -c $(nproc --all) -t 600 &
while (( $(ps aux | grep -ci -m1 '[s]tress') )); do echo -e "$(date) | $(( $(cat /sys/class/thermal/thermal_zone0/temp) / 1000 ))'c"; sleep 1; done
Stress test results:
  • Idle temps:
    • Cogent.design Case = 29'c
    • Stock heatsink/case = 44'c
  • Max temps reached from stress test:
    • Cogent.design Case = 47'c
    • Stock heatsink/case = 75'c
The Cogent.design case runs 28'c cooler than the stock heatsink/case. This has completely exceeded my expectations with a 37.3% reduction in max temperatures.

Guide:

Step 1: Remove the stock heatsink:
First you need to remove the pins:
  • From the top of the board, push one pin down.
  • Use a pair of tweezers to "squash" the bottom sides of the pin.
  • Release the pin and tweezers. If successful the pin will exit through the hole on release.
Now we need to gently remove the heatsink:
  • Get your girlfriends hair dryer and heat up the heatsink.
  • Once the heatsink is warm, gently twist the heatsink in both directions.
  • Repeat the process several times.
  • Over time it will become lose and can easily removed.
heatsink_removed.jpg
Step 2: Clean the s905 chip:
We must remove all residue left on by the stock heatsink and thermal compound:
  • Grab your girlfriends nail varnish remover and some cotton wool buds.
  • Place a small amount of the nail varnish on the cotton wool pad.
  • Gently rub the s905 chip with the bud, until all reside is removed.
  • Dry the s905 chip by using a clean cotton wool bud to remove all remaining nail varnish.
heatsinkremoveclean.jpg
Step 3: Apply thermal compound/adhesive:
This is required to give maximum heat dissipation efficiency through both surfaces:
NOTE: Although I was provided with a thermal compound, I decided to use a Akasa thermal adhesive pad instead as I want a permanent attachment.
themaladhesive.jpg
Step 4: Complete the case build:
Here is the method I used to complete the case build, to achieve a dead centre board alignment with case:
  • Place the Odroid C2 on the bottom section of the case, line up the holes.
  • Push all the 4 bottom screws, through the bottom of the case so they are visible from the top. This will ensure the case and board alignment is perfect.
  • Line up the top section of the case and gently place it on top of the bottom section.
    When the top section touches the screws, gently lift the whole case up. The screws will fall out and you should be left with a perfect allignment.
  • Gently press the bottom and top section together and ensure its flush.
  • Now you can insert the screws and fix it into place.
end.jpg
If you find our project or support useful, then we’d really appreciate it if you’d consider contributing to the project however you can.
Donating is the easiest – you can use PayPal and Bitcoin.

User avatar
johnvick
Legend
Posts: 530
Joined: Wed Jun 08, 2016 10:53 am
Location: New Zealand

Re: Odroid C2 + Chip Flinger heatsink/case combo

Post by johnvick » Tue Oct 11, 2016 7:01 pm

Nice case.

User avatar
Fourdee
Site Admin
Posts: 2746
Joined: Tue Feb 06, 2007 12:36 pm

Re: Odroid C2 + Chip Flinger heatsink/case combo

Post by Fourdee » Tue Oct 11, 2016 7:23 pm

johnvick wrote:Nice case.
Hell yes :)

Although, the case will most likely outlive the Odroid C2 thats inside it lol (eg: if/when Odroid C3 comes to town). Case is built like a tank.
If you find our project or support useful, then we’d really appreciate it if you’d consider contributing to the project however you can.
Donating is the easiest – you can use PayPal and Bitcoin.

mhoney
Posts: 9
Joined: Tue Sep 27, 2016 2:02 am

Re: Odroid C2 + Chip Flinger heatsink/case combo

Post by mhoney » Tue Oct 11, 2016 8:48 pm

Odroid-C2 cases are now available at http://cogent.design . If you want more than one or live outside the US and want a little better shipping price than the standard flat rate, feel free to message me or send an email to mhoney@cogent.design , I'll get you a quote for International First Class USPS.

mhoney
Posts: 9
Joined: Tue Sep 27, 2016 2:02 am

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by mhoney » Fri Oct 14, 2016 8:22 pm

In order to get the word out and get some feedback on the case design and quality, we've decided to sell our first batch of Odroid-C2 cases for $39. This is for our first batch only (run of 30), so if you want the best heat sink you can get combined with an almost indestructible enclosure now is the time.

http://cogent.design

User avatar
Fourdee
Site Admin
Posts: 2746
Joined: Tue Feb 06, 2007 12:36 pm

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by Fourdee » Fri Oct 14, 2016 8:33 pm

mhoney wrote:first batch of Odroid-C2 cases for $39.
I can't express enough how good this case it. Grab one while you can.
A case for life, doubles up as the best heatsink on the market currently for the C2. Cogent.Design have nailed the "case + heatsink" combo, and, its gorgeous.
If you find our project or support useful, then we’d really appreciate it if you’d consider contributing to the project however you can.
Donating is the easiest – you can use PayPal and Bitcoin.

mrneilypops
Posts: 6
Joined: Fri Oct 28, 2016 9:28 pm
Location: luxembourg

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by mrneilypops » Fri Oct 28, 2016 9:35 pm

Case ordered!
One thought...can you see some heartbeat light/red light action through the slots of the case?

User avatar
Fourdee
Site Admin
Posts: 2746
Joined: Tue Feb 06, 2007 12:36 pm

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by Fourdee » Sat Oct 29, 2016 12:52 pm

mrneilypops wrote:Case ordered!
One thought...can you see some heartbeat light/red light action through the slots of the case?
The path to the LED's is obstructed, but, it does reflect off the internal metal of the case, so it is visible.
If you find our project or support useful, then we’d really appreciate it if you’d consider contributing to the project however you can.
Donating is the easiest – you can use PayPal and Bitcoin.

mrneilypops
Posts: 6
Joined: Fri Oct 28, 2016 9:28 pm
Location: luxembourg

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by mrneilypops » Sat Oct 29, 2016 1:50 pm

@Fourdee
Thanks for the info 8-)

mrneilypops
Posts: 6
Joined: Fri Oct 28, 2016 9:28 pm
Location: luxembourg

Re: Odroid C2 + Cogent.design heatsink/case combo

Post by mrneilypops » Thu Nov 03, 2016 4:42 pm

C2 case arrived today.
UP and running @ 28C light load :o (ambient 19C)
Great quality product!

NOTES:
1. After removing stock heatsink pins the heatsink simply fell away - no need for heat treatment.
2. Using Arctic Silver thermal paste.
3. Don't forget to apply the plastic feet to allow air flow under and through the case.

I will edit with temp after some period of light usage...

T+3 HOURS @ 41C light load 8-) (ambient 19C)

Post Reply