This post is reproduced from
http://www.cbber.com/thread-50989-1-1.html
In the place of the original HDD I placed an traditional fan with radiator and air-exhaust towards the side, an mSATA drive, welded an additional 3 heat-pipes to CPU & GPU plus a custom cooling block and heat-pipe for the PCH.
The original fan on the left is now responsible for CPU, GPU & PCH and connected with 5 heat-pipes. The additional one on the right is only connected with two heatpipes and supports the CPU & GPU, so using a mouse on the right side won't feel any hotter.
CLEVO let's the system reach 60c before the fans are turned on and let it cool down to about 50c until it is turned off again. This approach reduces dust and increased the lifetime of the fan, but is not inappropriate for high speed quad-core setups.
It is impossible for me to control the fan speed via BIOS or EC, so I tapped into the 5v line of the original HDD connector and let temperature diodes control the fan speed.
An additional temperature-diode is at the PCH heat-pipe and controls the old fan below 60c (I have tapped into a 3.3v line)and an other diode prevents current back-flow once the original 5v EC controlled fan kicks in.
So we now have two 5v sources plus one 3.3v and the original cooling method is also functional.
Here the stock version with just a single fan & heat-pipe (a pic from the net) :
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And here the modded version with dual-fan & heat pipes :
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Modded bottom plate with 4 depressions to optimize the air intake from the right side (above the CPU):
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With bottom cover assembled. Before the passive cooling of the PCH used too overheat and release all the heat into the body:
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Temperature-dependent resistors to regulate the fan speed according to GPU & CPU temps:
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Tapped into the original 5v fan connector and added a diode to prevent current back-flow.
An additional temperature-diode at the PCH heat-pipe automatically controls the fan-speed:
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Homemade liquid metal. Cheaper than the cheapest stock thermal paste.
It has a melting point of 50c. Excess liquid was safely removed towards the sides until it stabilized:
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