Custom PC builds often lean on subtle aesthetics, but the MAINGEAR DOOM Edition NIGHTMARE! takes a different path. This limited edition machine, themed specifically for DOOM The Dark Ages, is a 72 pound monument to high end hardware and hellish design. Priced at approximately $5999, it represents the absolute ceiling of current consumer technology, housed in a chassis that looks like it was pulled directly from the game world.
The HAVN HS 420 Custom Chassis
The foundation of this build is the HAVN HS 420 Premium Mid Tower Case. While the standard version is a respected enclosure, this specific iteration features a custom green finish and extensive DOOM branding. The exterior is covered in symbols and script familiar to fans of the franchise, including the iconic Doom Slayer symbol which, according to lore, translates to a warning: DO NOT OPEN.
One of the most unique physical features is a magnetic skull accessory included in the packaging. This detail serves a dual purpose. It can be used as a decorative cover for the liquid cooling reservoir or attached to the exterior of the case to serve as a headphone hanger. The attention to detail extends to the internal panels, which feature hellish script, custom fan designs, and a dedicated plaque identifying this specific unit as number 0001 in the limited production run.
Internal Specs and Performance Hardware
MAINGEAR did not compromise on the internal components. The NIGHTMARE! edition is powered by the NVIDIA GeForce RTX 5090 FE, featuring 32GB of GDDR7 memory. This is paired with the AMD Ryzen 9 9950X3D, a 16 core processor capable of reaching speeds up to 5.7GHz. To ensure the system remains stable under load, the CPU is cooled by a Tryx Panorama SE 360 ARGB AIO. This liquid cooler includes an adjustable screen that, in this configuration, comes pre loaded to play original DOOM gameplay footage.
The supporting hardware is equally robust:
- Memory: 64GB of TEAMGROUP T-FORCE Xtreem ARGB DDR5 RAM (6000MT/s).
- Storage: 2TB TEAMGROUP T-FORCE CARDEA A440 PRO M.2 PCIe Gen4 NVMe SSD.
- Power Supply: MSI MAG A1250GL 1250W 80+ Gold.
- Cabling: Custom red sleeved cables to match the hellish aesthetic.
The system arrives pre configured with XMP and ReBAR enabled in the BIOS, ensuring that users get the maximum performance out of the box without needing to dive into manual tuning.
Gaming Benchmarks and Thermal Results
Performance in DOOM The Dark Ages is the primary benchmark for a machine of this pedigree. At 4K resolution using DLSS Quality settings, the system maintains approximately 140 FPS. Even at native 4K with DLSS disabled, the RTX 5090 keeps the frame rate around 90 FPS. The performance remains impressive across other demanding titles at both 1440p and 4K, including Alan Wake 2, Cyberpunk 2077, and Red Dead Redemption 2.
The cooling solution proves effective despite the massive power draw of the components. During testing in F1 24 and Cinebench 2024, the 360mm AIO and the airflow design of the HAVN HS 420 managed the thermal output of the 9950X3D and the 5090 efficiently. The red RGB lighting throughout the case emphasizes the theme while the internal DOOM logo GPU bracket provides necessary support for the massive FE card.
A Collector’s Item for the Hardcore Fan
At $5999, the MAINGEAR DOOM Edition NIGHTMARE! is a niche product designed for collectors and enthusiasts who want the fastest hardware available in a bespoke package. For those who prefer to build their own, the custom green HAVN HS 420 DOOM: The Dark Ages Limited Edition case is available separately at Micro Center for $329.99. However, the full MAINGEAR build offers a level of integration, from the custom decals to the pre loaded AIO screen content, that is difficult to replicate. It is a heavy, powerful, and uncompromising tribute to one of gaming’s most iconic franchises.
