Someone call a priest, this Omen PC build is demonic!

Building and designing a PC around the desire to showcase the PowerColor Red Devil RX 7800 XT is brilliant, especially when the results look this awesome.

Omen PC build

This demonic PC build is not for the faint of heart. Inspired by the desire to use a PowerColor Red Devil GPU based on the new AMD Radeon RX 7800 XT card, this concept is something we couldn’t come up with in our wildest dreams. Looking like something straight out of a Doom game, we were keen to learn more about how it came into existence. 

Custom PC has been celebrating the best PC builds since 2003, and our Facebook group has over 420,000 members. We’ve seen many custom gaming PCs, from mods based on existing case designs to scratch builds. Here we chat to Marios Dalainos about how they assembled and designed this Omen PC build.

A side by side image of the Omen PC build, one with the prison bars attached, and one with them removed

Custom PC: Were there any key influences for your build?
Marios: PowerColor sent me its new Red Devil AMD Radeon RX 7800 XT card and I really wanted to build something to showcase this incredible GPU. I figured what better way to do this than base the whole theme around it!

Custom PC: How did you plan out this setup?
Marios: Every build I complete starts as a concept in my head. I’m bad at drawing so try to bring my designs to life without having to plan things out on paper.

Custom PC: What tools, machinery, and materials did you use?
Marios: I only used basic tools like a drill, screwdriver, handsaw, and a brush.

Custom PC: How long did it take you to make this build, from start to finish?
Marios: I honestly can’t tell you! I tried to spend as much of my free time on the build, but didn’t keep track of how long this was.

Custom PC: Did you come across any difficulties in designing and making your build?
Marios: The first problem I ran into was the clay I used for the interior of the build. I had to be quick when applying it and forming the patterns because it dried very quickly. The second issue was working out how I could position and hang the GPU in the exact place that I wanted. A huge chunk of the build time was spent on perfecting this part of the build.

Custom PC: Are you completely happy with the end result, or is there anything else you’d like to work on next?
Marios: I’m really satisfied with the result but when I look at it over and over again, I find a few little areas that I believe I could have handled better, but that’s often the case when reviewing finished products!

Omen PC build specs


  • Raijintek Antila D5 pump/res
  • Raijintek fittings
  • Raijintek Forkis CPU block
  • EK 240 Coolstream radiator
  • EK Vardar 120mm fans
  • EK ZMT tubes

This is one demon we don’t want exorcised. Instead, we’d be quite happy to give it a home on our desktop!

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