
Dark Matter – Top-Tier Gaming PC Build! Intel i9-14900K + AMD RX 7800XT
OVERVIEW:
In this guide, we’ll walk you through the assembly of the Dark Matter gaming PC, which is designed for top-tier gaming performance. The build includes an Intel i9-14900KF processor, 64GB of DDR5 RAM, a 2TB NVMe SSD, and an AMD RX 7800 XT graphics card. The PC is housed in the Thermaltake Tower 300 case, which offers excellent cooling and aesthetic appeal.
See the official Intel specs for this model
REPAIR TIME & SKILL LEVEL:
This build is estimated to take about 2 to 3 hours to complete and is of INTERMEDIATE difficulty, requiring basic knowledge of PC components and assembly.

STEPS:
Tools You Need
To assemble the Dark Matter PC, you’ll need a Phillips screwdriver, thermal paste (if not pre-applied), and some cable management tools like zip ties.
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Anti-Static Work Gloves Lightweight
$5.00 -
GD900 Thermal Paste High Performance Grease, 1 Gram Syringe
$5.00 -
86 in 1 Steel Bit Precision Magnetic Screwdriver Tool Set with Case for Phone PC Electronics
Original price was: $45.00.$37.00Current price is: $37.00. -
6 in 1 Steel Bit Precision Magnetic Screwdriver Tool Set with Case for Phone PC Electronics
$8.00
Unbox and Prepare the Motherboard
- Unbox the motherboard and remove all accessories.
- Take out the Wi-Fi antennas, SATA cables, RGB splitters, and the small internal I/O board.
- Keep the accessories aside for later.

Install the CPU
- Open the CPU socket on the motherboard.
- Align the small triangle on the CPU with the triangle on the socket.
- Drop the CPU in, making sure it seats properly, and close the socket.
Install the 2TB NVMe SSD
- Use a screwdriver to remove screws securing the thermal pad cover on the SSD tray.
- Remove the SSD from the protective tray, install it into the slot, and replace the thermal pad cover.
Position the Backplate for the CPU Cooler
- Open the cooler packaging and locate the backplate for Intel LGA 1700 sockets.
- Attach the backplate to the motherboard, ensuring the standoffs match the socket type.

Mount the CPU Cooler
- Install the cooler’s mounting hardware.
- Attach the cooler’s pump to the motherboard and secure it using screws in a cross-pattern to ensure even pressure.
Install the RAM
- Open the RAM slots on the motherboard.
- Line up the notches and click both RAM sticks into place.
Install the AIO Cooler and Fans
- Mount the 360mm AIO cooler in place.
- Attach the fans to the radiator using longer screws.
- Plug in the fan splitter to connect the fan wires to the motherboard.

Manage Cables and Install the Motherboard
- Prepare the case by removing unnecessary components.
- Install the motherboard standoffs and slot the motherboard into place.
- Screw in the motherboard using the appropriate screws for the ITX form factor.

Install the Graphics Card
- Remove the necessary PCIe slot covers from the case.
- Slot the graphics card into the PCIe slot and secure it with screws.

Install the Power Supply
- Install the power supply bracket and mount the PSU with the fan facing down for optimal airflow.
- Plug in all necessary power cables, including the 8-pin EPS and 24-pin motherboard power cables.

Finalize Cable Management
- Organize and route all cables neatly inside the case to ensure good airflow.
- Double-check all connections, including those for front panel I/O and USB.

CONCLUSION:
Now that the Dark Matter gaming PC is fully assembled, it’s ready for testing and use. Ensure all components are securely connected and that the system is properly powered before turning it on. With its powerful specs, this PC is built to deliver an incredible gaming experience.


VIDEO TUTORIAL:
Looking for a more in-depth tutorial? Check out our complete teardown video for a detailed step-by-step walkthrough.
MAIL-IN REPAIR SERVICE:
We offer professional PC building services. If you’re unsure about doing this assembly yourself, send your components to our expert technicians for fast and reliable assembly.
SHOP PARTS:

Gaming PC Components
SHOP TOOLS:
Using precision tools ensures a safe and efficient repair. Always use the right tools to prevent damage to delicate components.

REPAIR TOOLS
Discover an extensive range of tools, including screwdrivers, tweezers, pry tools, and more, essential for all your repair and maintenance needs.
HAVE QUESTIONS?
We’re here to help! Contact us:
- Phone: 818-456-4479
- Email: [email protected]
















