Heatsink modding

[TerryH]

These heatsinks are made from copper, but they are only 5mm tall. They are obviously worse than all other options recommended.

Copper is a significantly better heat conductor than aluminium, so this is probably incorrect.

[robmich]

I'm curious, has anyone tested the temps without modding? What kind of temps does this get without modding?

Without mods, I average between 53c and 72c. I have not experienced any obvious throttling of the CPU.

Rob

[portezbie]

Copper is a significantly better heat conductor than aluminium, so this is probably incorrect.

I think he means because the 15mm heatsink allows it to touch the case so the heat can transfer to the metal body of the case. But you are probably right that 15mm copper heatsinks might be even better.

[portezbie]

Without mods, I average between 53c and 72c. I have not experienced any obvious throttling of the CPU.

Rob

Thanks.

So how do these three items look?

http://www.amazon.com/Arctic-Alumina-Thermal-Adhesive-5g/dp/B0009IQ1BU/ref=sr_1_1?ie=UTF8&qid=1422657824&sr=8-1&keywords=thermal+adhesive

http://www.****.com/itm/1pcs-100mm-0...item3a9ca056bb

http://www.****.com/itm/5pcs-30x30x1...item2ec0bc8312

Also, do you use the thermal adhesive to mount the pad as well, or is that just for the heatsinks?

Thanks for your help guys I have never done anything liket his before, but it seems like a wise thing to do and not too tricky.

If someone wanted to write up a more step by step instruction, that would be great as well.

[loko]

Copper is a significantly better heat conductor than aluminium, so this is probably incorrect.

5mm vs 15mm total height makes a huge difference. Judging from the photos, the 5mm copper heatsink has a 2mm solid base and 3mm fins, while the aluminium heatsink has a 3mm solid base and 12mm fins. The difference in the total surface is huge. Copper is indeed a better (but slower) heat conductor, but I guess not 3-4 times better than aluminium.

I think he means because the 15mm heatsink allows it to touch the case so the heat can transfer to the metal body of the case. But you are probably right that 15mm copper heatsinks might be even better.

No, I did not generally compare copper vs aluminium heatsinks. I compared a 5mm copper heatsink with a 15mm aluminium heatsink, saying that the 5mm copper heatsink is too short to be good, which was questioned above as being probably incorrect.

[portezbie]

My apologies if I misspoke for you.

[kotobide]

Here are some pics. Sorry for poor quality. But you can imagine how to set it up.
Bye.

That metal plate with the holes in it that you have the heat sinks on is that stock that came with the box or is that something you added?

[no_spam_for_me]

I'm curious, has anyone tested the temps without modding? What kind of temps does this get without modding?

Edit: Nvm, I found it.

e.g. at KODI with deinterlacing you get during secs more than 80°C and the CPU begins to throttle down ...

[no_spam_for_me]

:
http://www.****.com/itm/1pcs-100mm-0...item3a9ca056bb
:

If I'm not wrong someone contacted this seller and got the answer that these pads only have 1 - 1.5 W/mK and that's not really good...

http://www.tomshardware.co.uk/forum/282255-29-thermal-paste-higher-worse

[noggin]

That metal plate with the holes in it that you have the heat sinks on is that stock that came with the box or is that something you added?

That's what comes with the Pipo. It's mounted onto the PCB (though can be quite easily removed). There is a sticky heat pad stuck on top of the metal plate. Most of us are looking at attaching stuff to this thin metal plate rather than removing it and going for something directly on the chips I think.

[sogoku_vn]

My heatsink modding

[portezbie]

If I'm not wrong someone contacted this seller and got the answer that these pads only have 1 - 1.5 W/mK and that's not really good...
http://www.tomshardware.co.uk/forum/...e-higher-worse

Ok, thank you. So are the thermal adhesive and heatsinks ok?

http://www.amazon.com/Arctic-Alumina...ermal+adhesive

http://www.****.com/itm/5pcs-30x30x1...item2ec0bc8312

And can you or anyone recommend a better thermal pad?

[no_spam_for_me]

Here they talk about > 9,0 W/mK

http://www.amazon.de/Arctic-Silver-Alumina-W%C3%A4rmeleitkleber-Gramm/dp/B003MA5Z1E

But if I'm you, I would try to find a pad with >= 5 W/mK, adhesive on both sides and e.g. 0.5mm, so you can replace the heat sinks...
Also try to find one with good W/mK and adhesive at only one side (I don't know which mm you need) to replace the one under the metal plate over the CPU...

[portezbie]

Sorry not following you.

[loko]

What about these? I would recommend probably the thinnest one.

100mm x 100mm x 0.15mm ; 0.30mm ; 0.50mm ; 1.00mm ; 2.00mm ; 3.00mm ; 4.00mm ; 5.00mm

http://stores.****.co.uk/andyscomput...ape+Conductive

Or these? The blue ones have better thermal conductivity than the black ones.

http://stores.****.co.uk/thegameboot...+ADHESIVE+TAPE