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=='''Step 3: Fixating the thermal block'''==

=='''Step 3: Install the thermal block'''==

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Zynthian V5 gets a 25% extra power from the RPi4 by overclocking the CPU up to 2 GHz. For this to work properly, we need to evacuate the heat generated by the RPi4. As we don't want a noisy fan, prone to failure,  pushing dust inside our nice case, we are using the aluminum case as a huge heat-sink. This is achieved by the thermal block, a solid aluminum block that closely contact with the RPi4's chips and serve as a heat-highway to the aluminum case bottom, and from there, to the rest of the aluminum case. When your zynthian V5 is working hard, or when external temperature is high enough, you will note the V5 case is hot. This is good because it means the thermal block is doing its job of transferring heat from inside to the aluminum case body, where it's dissipated to the ambient.  

Zynthian V5 gets a 25% extra power from the RPi4 by overclocking the CPU up to 2 GHz. For this to work properly, we need to remove the heat generated by the RPi4. As we don't want a noisy fan, prone to failure,  pushing dust inside our nice case, we are using the aluminum case as a huge heat-sink. This is achieved by the thermal block, a solid aluminum block that closely contacts with the RPi4's chips and serve as a heat-highway to the aluminum case bottom, and from there, to the rest of the aluminum case. When your zynthian V5 is working hard, or when external temperature is high enough, you will note the V5 case is hot. This is good because it means the thermal block is doing its job of transferring heat from inside to the aluminum case body, where it's dissipated to the ambient environment.  

Having understand all this, you may realize '''this is a key step for getting your V5 working at 100%''' of its capacity, so don't be in a hurry and take your time for doing a good work. Let's start!

Having understood all this, you may realize '''this is a key step for getting your V5 working at 100%''' of its capacity, so don't be in a hurry and take your time to do a good job. Let's start!

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'''3.''' Using the rule-meter and the scissors or cutter, cut 4 little pieces of thermal pad with this recommended sizes:

'''3.''' Using the rule-meter and the scissors or cutter, cut 4 little pieces of thermal pad with these recommended sizes:

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[[File:IMG_4163_fixed_wiki.JPG|600px|right]]

[[File:IMG_4163_fixed_wiki.JPG|600px|right]]

'''6.''' Remove the transparent protective sheet from the 3 pieces of thermal pad and fixate the RBPi4 compute module to the thermal block using the 4 x ISO7380 M2.5 screws.

'''6.''' Remove the transparent protective sheet from the 3 pieces of thermal pad and fix the RBPi4 compute module to the thermal block using the 4 x ISO7380 M2.5 screws.

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