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Introduction The GPU cooling kit was designed to bring silent performance/gaming to the DB4 by allowing a discreet graphics card to be passively cooled using one of the side panels. It comprises of a GPU mount, heat sink mount, heat pipes, universal bracket and VRAM coolers, everything needed to cool a graphics card without the need of a fan.
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Prepare Graphics Card for Installation Before you can attach the DB4 GPU cooler to the graphics card, you will need to remove the existing cooler. The exact mounting mechanism is going to vary from card to card, but in general the stock cooler will be attached to the card with 4 screws that are accessed from the back of the card and screw directly to the cooler.
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Assemble the GPU Cooler Assembly The kit is supplied disassembled for shipping, so the CPU mount, heat sink mount and heat pipes must be assembled prior to attaching them to the graphics card. Slide the heat pipes into the slots in the GPU mount and heat sink mount, the shorter side of the heat pipes into the GPU mount and the longer side into the heat sink mount.
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Prepare to Fit the GPU Cooler Assembly Before fitting the GPU cooler assembly, it is important to determine the correct orientation so that when the graphics card is fitted into the DB4, the heat pipes run horizontally. The diagram below shows the correct orientation with the heat pipes running parallel to the card I/O bracket and in the direction of the PCI connector.
Fit the GPU Cooler Apply thermal paste to the die surface of the GPU and to the exposed area of the heat pipes in the GPU mount. Carefully place the copper shim onto the centre of the GPU then lower the cooler assembly onto the copper shim. The GPU mount arms can be adjusted for irregular hole spacing but in most cases the supplied position will be suitable.
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With the graphics card installed on the motherboard, lower the assembly into the DB4 being careful not to damage any of the heat pipes. Lock the motherboard tray in place with the thumbscrews and secure the graphics card bracket to the PCI mount on the bottom of the DB4. Thermal paste can now be applied to the heat sink mount along the exposed area of the heat pipes in preparation for replacing the side panels.
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HSM and side panel should be parallel which indicates that even force is being applied along the length of the HSM. The GPU cooler part of the installation is now complete and the rest of DB4 assembly can be followed as detailed in the main user guide.
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