Heatsink modding

[ultrabit]

I bought a 5mm thermal pad from ****. Thanks to all for advice to do this.

Before intelburntest sent the cpu to 90 degrees and throttled the speed to 700Mhz.

After putting in the pad the cpu goes no higher than 30 degrees with intelburntest. In fact the more I work the cpu the cooler it gets as more heat passes through the pad! Temps are 15 degrees higher at idle.

[Cypher]

Been reading this thread again after doing the 5mm pad mod. Since the bottom plate heat up alot, possible to attach heatsink to the bottom plate?

Either using high heatsink that will connect the top case and bottom plate or just attaching heat sink to the bottom plate.

Any opinions appreciated.

[lacko]

i've made following layers:

-------------top case plate----------------
small piece 5mm pad
big heatsink + small heatsinks
double side thermal adhesive tape
alu plate
0.5mm thermal pad
PCB (+cpu, ram, psu)
5mm phobya pad
-----------bottom case plate-------------

So, heat sources (CPU + RAM + PSU) are connected to both top and bottom case sides. Results are great (<70°C) and nothing is visible from outside and still it is absolutely silent as there is no fan.

Why do you want to add more heatsinks from outside? Your pad-mod results aren't sufficient?

[dickerpatti]

Hier ist mein MOD, ist ein alter xBox360 Kühler
Here is my MOD , is an old xBox360 cooler

[scooter2014]

This is halrious you guy have my cheap fix beat by miles. I use a old case fan 3 inch with 4 wallposter pins for feet and a old usb port. Wired the fan to the usb plug it in and wrap the fan in place with the elastic I can switch to any box when testing over clocked kernels and worked in every box even ones that Iv e removed heat sinks from air movement seems to be best heat removal tool. 😃 but I love what you guys have thought up...

[geppetto61]

I bought a 5mm thermal pad from ****. Thanks to all for advice to do this.
Before intelburntest sent the cpu to 90 degrees and throttled the speed to 700Mhz.
After putting in the pad the cpu goes no higher than 30 degrees with intelburntest.
In fact the more I work the cpu the cooler it gets as more heat passes through the pad!
Temps are 15 degrees higher at idle.

Hi you have got an impressive result indeed
... may i ask you if you have done something also above the pcb directly on the cpu ?
i was about to throw everything away ... there is so little room to work that is unnverving ...
the exchange area on the cpu is just ridiculous (11x11 mm ... ) ... i wonder if even it represents a flaw in the design.
Why not provide a wider surface for heat exchange ? that would make life much much much easier
I have bought some very nice fan ... they are just huge compared to that tiny area and ... they do not fit at all ...
However ---- i would like to try again
The sound i got from this little pc was amazing ... maybe i am me hearing things.
This unit as a huge potential as audio streamer.
Thanks again.

[ultrabit]

Hi you have got an impressive result indeed
... may i ask you if you have done something also above the pcb directly on the cpu ?
i was about to throw everything away ... there is so little room to work that is unnverving ...
the exchange area on the cpu is just ridiculous (11x11 mm ... ) ... i wonder if even it represents a flaw in the design.
Why not provide a wider surface for heat exchange ? that would make life much much much easier
I have bought some very nice fan ... they are just huge compared to that tiny area and ... they do not fit at all ...
However ---- i would like to try again
The sound i got from this little pc was amazing ... maybe i am me hearing things.
This unit as a huge potential as audio streamer.
Thanks again.

I only used a 5mm pad below the PCB as shown in the photo in my post above (number 436)

It is impressive, yes. The harder I work the cpu, the cooler it gets!
The temperatures in the taskbar in the screenshots below are from coretemp 1.0 RC6.

[geppetto61]

I only used a 5mm pad below the PCB as shown in the photo in my post above (number 436)
It is impressive, yes. The harder I work the cpu, the cooler it gets!
The temperatures in the taskbar in the screenshots below are from coretemp 1.0 RC6....

Hi and thanks a lot for the kind and very valuable reply
i have ordered some 5mm pad myself. I have to tried again.
This little unit is amazing used as an audio player/streamer. I heard very good sound even watching youtube
there is potential.
For HD video streaming the HW shows some limits, as normal. I would use it only for audio.
Thanks a lot again.
Regards, gino

[drdtyc]

Here are the parts I ordered:
5mm thermal pad (5W/mK) - www.****.com/itm/121310769355
1mm thermal pad (7W/mK) - www.****.com/itm/121159893475
thermal adhesive - www.****.com/itm/330398675320
28x28x13mm heatsinks - www.****.com/itm/190710367111

Finally did the mod today.
I used Arctic Aluminum to attach TWO heatsinks to the alu plate.
Between the plate and the cpu I used 1mm thermal pad.
Underneath the circuit board I used 5mm thermal pad. Not one big pad. But 3 20x20mm pads.

After stress tests of over 2 hours, the CPU temperatures were steady and never went above 68 deg C with room temperature at 23 deg C. Screen shots are attached.



I am happy with the mod.
Thanks all for your sharings and advices.

[pyro42]

Been waiting 34 days now for my cooling pad to arrive. tomorrow I file with **** for refund. has anyone managed to find a US seller at a reasonable price for the 5mm pads? Also, I found this little gem while tearing down some 15-20yo computers. (Socket 7)


but now i have to find a 12v to hook it in to. It won't spin up from 5v.

Edit: nevermind, just found a US seller. http://www.****.com/itm/100x100x5mm-...item20f33a53c2

[rfwagner]

but now i have to find a 12v to hook it in to. It won't spin up from 5v.

How do you gonna make the moves to turn this on?
I bought 2 similars (HDD coller) and now i need to make a way to power it on, but my knowledge for thing like that is very weak.

[rfwagner]

Basically all I did was cut a piece of styrene and covered the bottom of the fan, then used another piece of styrene on the top and cut a hole in it the same size as the fan blades. This allows air to come in the fan but not exit out the bottom. I then cut about half of the fans frame on one side to give the air a place to exit. Here's a picture of my test fan to give you a better idea of what I did.

Hello dear friend, and how do you power it on??
EDIT: never mind, just made a way with a 12v charger, put 2 collers inside, one blow away hot air and other blow fresh air to inside

[peterscm]

Did the same mod at bottom of PCB using 5mm thermal pad for my PIPO X7S.

Before the mod can reach 88 degree Celsius just installing programs. With the mod, it max out at 82 degree Celsius when test with IntelBurnTest - Standard and Maximum test.

[geppetto61]

Hi Guys ! finally !
Thank you All for the very valuable advice !!! it works ! i am now about 20 C less than unmodded !
I must confess that i was skeptical at first but now i am convinced that the solution is try to transfer heat to the case and use this as heatsink.
yes ! after modding yesterday evening after surfing the net and streaming from Netflix for about 4 hours (my normal use of this unit) and the results are:

Max T reached on a core = 62 C
T during normal operations = 45 C to 55 C

I bought 2.5 mm thick thermal pads and placed two sheets below the PCB one on the other (for a total thickness of 5 mm).
Above the PCB directly on top of the cpu a thin sheet of i think 0.2 mm thermal pad, a little Al heatsink (12 mm high) and between the top of the heatsink and the upper case another sheet of 2.5 mm thermal pad.


The lower case gets nicely warm, not hot. So the heat transfer between case and lower side of the pcb is working ok ...
Instead the cover gets less warm. I am sure that i should improve the transfer between the top side of the cpu and the case cover. If i will be able to do that i think i could lower the T of at least another 5 C and get T in normal operating conditions ranging from 40 to 50.
And this would be enough i think to guarantee a decent lifetime for the unit.

So i am here to ask about the best way to improve the heat transfer between the cpu top and the upper case.
I have at hand 2.5 mm thermal pads and some Al heatsinks (12 mm high).

Thanks a lot indeed to All for the very useful advice.
Have a nice day !!!

P.S. Pipo X8 is coming ! for that i am even thinking of using a little fan i have. Space free is bigger.

[rfwagner]

for that i am even thinking of using a little fan i have. Space free is bigger.

The first thing I did was to put fans on it, since I found very easy in my town, and needed to bought from Internet the heatsinks and pads.
The cooling effect from the fans (put 2 50mmx50mmx10mm, one blowing air from outside and another blowing air from inside with only one old heatsink) are very good. Getting around 65 C with stress test.
The only downside is the noise, maybe because the fans I found are cheap ones and low quality.
But I will try the heatsinks and pads style and see what is the best for me