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Ry_Darcy
Posts: 58
Joined: Sat Aug 29, 2020 1:18 pm
Location: EU

Cooling a Compute Module 4* on a TOFU carrier board

Mon Apr 19, 2021 12:49 pm

Hello all,

I am thinking of installing the above in a 3D printed plastic case (ventilated) made for the abovementioned. I have my reservations about cooling issues however.
According to the Tofu board specs, there is no fan header as there is on the CM4 I/O board, so I presume I will have to power and control the fan via the GPIO pins.
Would anyone have any ideas about what switching (circuit) that I might need.
Been spoiled up to now running a PI4B8GB in an Argonone M.2 case with excellent cooling.
Any tips/pointers much appreciated.

Links:

https://store.oratek.com/products/tofu
https://store.oratek.com/products/tofu- ... eq=uniform

Regards,

Ry
* When they become available again...

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Mon Apr 19, 2021 3:43 pm

Would install a passive heatsink first and then see if a fan is needed in addition.
See viewtopic.php?f=98&t=298810&p=1797688&h ... 4#p1797688
And viewtopic.php?t=216884

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Ry_Darcy
Posts: 58
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Location: EU

Re: Cooling a Compute Module 4* on a TOFU carrier board

Tue Apr 20, 2021 10:31 am

I fear, in my case a fan is a must as I am often in the south of France. Thanks for the tip anyway.
With the Tofu carrier board and case, it is not easy to find a suitable combination of fan and heatsink that "fits".


Regards,

Ry

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Tue Apr 20, 2021 4:06 pm

Ry_Darcy wrote:
Tue Apr 20, 2021 10:31 am
I fear, in my case a fan is a must as I am often in the south of France. Thanks for the tip anyway.
With the Tofu carrier board and case, it is not easy to find a suitable combination of fan and heatsink that "fits".
Regards,
Ry
as you are designing the case yourself (because there is non off-the-shelf) it should be no issue todesign a case which accepts a suitable fan (if it needs to be a case, my CM4IOs i.e. are mounted on a milled wooden board)

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Ry_Darcy
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Location: EU

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 4:50 am

Please visit the second link in my original post... The case is proprietary and is made by Oratek.

Regards,


Ry

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 5:13 am

Ry_Darcy wrote:
Wed Apr 21, 2021 4:50 am
Please visit the second link in my original post... The case is proprietary and is made by Oratek.
Regards,
Ry
sorry, I missed that they offer an assembled version to, and not just Step files only (that's what it defaults to when visiting the shop, CHF8 for the files, 35CHF (=USD38) for the assembled case)
Anyhow, as the top lid could either be modified easily (simly adding a small fan to id) or replaced by a new version (based on the CAD data) it should be fairly simple to get it hacked.

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Ry_Darcy
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Location: EU

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 5:31 am

Oratek tell me that I will have 19mm clearance between the top of the CM4 and the lid (roof) of the case. I would prefer to have a fan mounted directly on the CM4 SOC itself that behaves similiarly to the fan in the Argonone M2 enclosure. Seeing as the Ortek case is made of plastic or similiar I will not have the Argonone heatsink effect unfortunately.

Regards,


Ry

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 5:44 am

Did you take the time to visit Geekworm homepage? They offer the CM4 heatsink - which I've posted above - togehter with a suitable 30mm fan (which can be screwed to the heatsink directly) - at USD10.99
https://geekworm.com/products/cm4-12mm- ... 9307426904
From their website the fan is 3010 --> 30mm dia, height 10mm.

Sorry, but what else do you need? If there is 19mm clearance you could even mount a bigger fan with a small adapter plate i.e.

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 6:05 am

The pictures show a 4010mm fan placed on the cooler. with a small adapter plate this can be fitted as well quite easily. It's a 12V fan --> simply connect it to the input terminals.
IMG_20210421_075651.jpg
IMG_20210421_075651.jpg (115.39 KiB) Viewed 170 times
IMG_20210421_075704.jpg
IMG_20210421_075704.jpg (110.48 KiB) Viewed 170 times
IMG_20210421_075728.jpg
IMG_20210421_075728.jpg (78.64 KiB) Viewed 170 times

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Ry_Darcy
Posts: 58
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Location: EU

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 10:28 am

Will not work I am afraid. Heatsink and fan you propose will be too tall (high) to fit into the Ortek case. Thank you for the suggestion. I will go for a fan only solution. As I mentioned before, I am often in the south of France (temperatures).
The CM4 has screw holes which are not equidistant from each other, methinks I will have to source a fan and adapter to fit the CM4 screw holes.

Regards,

Ry

aBUGSworstnightmare
Posts: 2807
Joined: Tue Jun 30, 2015 1:35 pm

Re: Cooling a Compute Module 4* on a TOFU carrier board

Wed Apr 21, 2021 1:21 pm

Just as a side note: cooler only (120mm !) wasn't as effective as the passive heat sink from my testing.
Best results (lowest temp at 2GHz full load) was achieved with heatsink+cooler.

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