[DISCUSSION] Fans/Heatsinks/CPU Cooling Mods

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LazyBunny
Posts: 65
Joined: Mon Oct 24, 2016 10:38 pm
Location: USA
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Thu Nov 03, 2016 7:13 pm

Here's what i did for my cooling.
http://i.imgur.com/cio6DH2.jpg
*PS: the yellow stuff on the paper towel is flux i wiped off (with alcohol) after some SMD work.*

I removed the shroud, used a small 1cm tall heatsink with a small copper riser under it to lift it above the components, using high end PC thermal compound.
a small 30x30x10mm high CFM blower fan, and some kapton tape to act as a shroud.
i used a couple small beads of hot glue in safe/bare areas to hold it in place. Easy to clean up etc.

The fan has a small gap, and the kapton tape has a small flap that points a reasonable amount of air flow at the smaller chip near the bios.
And the fan is plugged into the 5v pins near the microUSB power plug.

Even under full load, the heatsink is fairly cool. It actually runs cool enough that i want to try a slight overclock. since the atom on mine tops out at 1.6ghz under load. But i haven't found any software yet that would do it.
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glebus
Posts: 6
Joined: Sat Dec 31, 2016 11:54 am

Thu Jan 12, 2017 5:01 am

Hi everyone!
My version of fan&heatsink.
cooler 12V so rotate not so fast and noiseless.
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ED209
Posts: 214
Joined: Tue Apr 19, 2016 3:31 pm

Thu Jan 12, 2017 7:43 am

glebus wrote:Hi everyone!
My version of fan&heatsink.
cooler 12V so rotate not so fast and noiseless.
This is incredible awesome fan...Would you mind to share a link to buy this fan? I will buy it for my 2 LattePandas...
And I think LattePanda team should improve their official case design to bring more flexibility for user to extend module for cooling system on the top and back side of the board. That will make it perfect with the fan you chosen.

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glebus
Posts: 6
Joined: Sat Dec 31, 2016 11:54 am

Thu Jan 12, 2017 1:32 pm

ED209 wrote: This is incredible awesome fan...Would you mind to share a link to buy this fan? I will buy it for my 2 LattePandas...
I would love to but I didn't buy this fan. Just found one in my old garbage :) I guess it was old AGP videocard.

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Thu Jan 12, 2017 6:37 pm

PARKER wrote:https://youtu.be/XGjLYezHU10

Managed to get the cpu to drop by 10 / 15c see vid above
so the general gist is that you removed the large metal covers over the chips and put some copper heatsinks on them? I've got copper heatsinks allover the metal covers on the front/back, but still getting 70/80c even when not using intensive stuff. Will an acrylic case+fan help?

I actually tried adding my own fan, but when I connected it to the 3-pin fan connector on the board, the fan barely spins at all, not enough power? are they not fan connectors? is there any way to get more power to a fan?

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glebus
Posts: 6
Joined: Sat Dec 31, 2016 11:54 am

Thu Jan 12, 2017 7:44 pm

I didn't remove metal cover (it's an interesting idea btw) and my heatsink is aluminium (sort of). Just covered thermal paste. I use two pins near micro-usb connector for the power. And my power supply is about 5V - 5A!!!

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Tue Jan 24, 2017 4:06 pm

Got the acrylic case and fan today, took the plate off the chips on the bottom and used some low-profile copper heatsinks on them and stuck the fan on top, take a look:

Image

Works great, doesn't get hotter than 67c maximum but I haven't done any stressing on it, just normal usage, what temp does it start to throttle at?

I have some questions though. How can I have the fan shut down when the LP powers down to sleep/hibernate or even shutdown mode from win10? it just stays running and I have to unplug it, kind of annoying.

Where the fan connects to the board, looks like there is room for another, can you connect another? If so, would there be any benefit to having it cool the top of the board too?

Thanks

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ED209
Posts: 214
Joined: Tue Apr 19, 2016 3:31 pm

Wed Jan 25, 2017 10:14 am

paradoxum wrote:Got the acrylic case and fan today, took the plate off the chips on the bottom and used some low-profile copper heatsinks on them and stuck the fan on top, take a look:

Image

Works great, doesn't get hotter than 67c maximum but I haven't done any stressing on it, just normal usage, what temp does it start to throttle at?

I have some questions though. How can I have the fan shut down when the LP powers down to sleep/hibernate or even shutdown mode from win10? it just stays running and I have to unplug it, kind of annoying.

Where the fan connects to the board, looks like there is room for another, can you connect another? If so, would there be any benefit to having it cool the top of the board too?

Thanks
Wow!!! It looks pretty awesome. Where did you get the fan and heatsink? It looks different from stuffs on LattePanda website.

I don't think it's necessary to connect another fan on the top. Because the CPU is soldered on the back of board. So the heat is more focusing on the back side as I known.

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Mon Jan 30, 2017 5:43 pm

Sorry dead links on those pics, here's some permanent ones:

Image

Image

Image

It's just the acrylic case + fan from the store here:
https://www.dfrobot.com/index.php?route ... ct_id=1463
https://www.dfrobot.com/index.php?route ... ct_id=1520

Like I say I took the plate cover off the chips, there is only a small thermal pad between the CPU and the plate, so I used some thermal adhesive tape to stick the low-profile copper heatsinks to the CPU and the two chips nearby (RAM?), however with the fan on top of the copper heatsink, it protrudes out of the case so I had to push the ventilation part off that side of the case so the fan would fit, which is fine really, I put some rubber feet on the corners of the fan and other sides of the unit so I can stand it however I like, but if I stand it on top of the fan it's too noisy so I leave it 'upside down'.

I don't think another fan is necessary for the other side like you say, however I really wish there was a way to adjust the speed, and also have the fan shut down when you shut the LP down, because having to unplug it is annoying (also if you want to leave the LP in sleep/hibernate mode, you want to keep it powered, but the fan is too noisy for that)

I'm thinking of adding a resistor to the fan to slow the speed, but adjustable with on/off ability would be best.

If anyone wants I can test the temperature with some stress testing (Prime95?)

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paradoxum
Posts: 26
Joined: Sun Nov 20, 2016 6:41 pm

Tue Jan 31, 2017 11:54 pm

Image

Idle temps:
Image

Intel burn test temps:
Image

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