“BlackBox“ 1.4L eGPU with Copper Modded AMD RX 6400

FlexxRocket

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Mar 5, 2023
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I tried to Mod my RX 6400 the Same like @REVOCCASES did , but with a Copper heatsink and 2 Noctua A6x25 Fans from N3rdware.com
The eGPU Thunderbolt Dock is the TH3P4 lite from EXP GDC (you can buy it at AliExpress) it only has an PCIe Socket, so your GPU´s TDP has to be under 75W
which is perfect for the rx6400 which has 53W TDP.
The Case was designed by me in Autodesk Fusion





The result was about 15 to 20 degree Celcius less Temperature in Games:
I tried 3D Mark´s TimeSpy and had the following Temps:


With Stock Cooler (RX 6400 Low Profile XFX)




And after Copper Modding it (with both Fans)

 
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FlexxRocket

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The Plate Just arrived .
Next i will Drill slightly bigger holes (2.00 to 2.10 mm )
And then cut 4 Threads with a M2.5 thread cutter
 
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FlexxRocket

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Removing the thermal paste and pads .
And putting 0.5 mm thermal Pads on the VRam
Is the Thermal Paste around the Chip dangerous? Because in the Post:
Its also around the chip
 
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FlexxRocket

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First i taped the two parts together with heat resistand tape ( Not recommended)
This is How it looks After soldering the two parts together
 
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FlexxRocket

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Its dirty from the heat resistand tape.
I wasnt able to remove it with isopropanol
So it has to Stay 🙃
 

FlexxRocket

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Acetone wasnt that successfull , but my fans arrived from n3rdware.
Next step will be printing the box and connecting everything together.
 
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FlexxRocket

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sadly the fans are always at 0RPM even at over 70 degrees celcius.is there a software where i can control the speed?
 

FlexxRocket

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Mar 5, 2023
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with a smaller Notua Fan it works
But that is no real Solution Because i Need at least a Fan with a diameter of 6cm
The 4cm from Noctua are way too small
 
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