A Reddit user has shared a unique dual-PC gaming setup featuring two Ryzen 7 7800X3D-powered systems connected to a massive liquid-cooling installation mounted outside the gaming room. The project was built for the owner and his girlfriend, with the entire cooling infrastructure moved beyond the room’s walls to help keep temperatures under control during long gaming sessions.
Both gaming PCs are built around AMD’s Ryzen 7 7800X3D processor, one of the most popular gaming CPUs among enthusiasts. The owner’s machine pairs the chip with GeForce RTX 4080-class graphics and 32GB of DDR5 memory, while the second PC combines the same processor with a Radeon RX 9070 XT and 32GB of DDR5 memory. According to the builder, the hardware was purchased shortly after the Ryzen 7 9800X3D arrived and assembled later during 2025.
The most interesting part of the project sits outside the gaming room. Instead of relying on conventional internal radiators, the builder installed two reservoirs, four pumps, and dual MORA 400 radiators on a wall behind the PCs. Each radiator is fitted with four Noctua 200mm fans, resulting in a total of eight large fans dedicated to cooling duties.
Large tubes connect the cooling wall to both gaming PCs, creating a shared liquid-cooling loop for the two PCs. The setup occupies far more space than a traditional water-cooling configuration, but it removes much of the heat-producing hardware from the room itself.
The builder explained that room temperatures had previously reached around 33°C while gaming. Rather than adding more fans inside the room, the decision was made to place the cooling hardware elsewhere. According to the post, coolant temperatures now remain below 32°C despite cooling two high-performance gaming PCs from the same setup.
To keep an eye on the loop, the owner installed Aquacomputer High Flow Next monitoring devices. These monitor flow conditions throughout the cooling setup and trigger an audible warning if liquid flow drops to zero. For a loop spanning two PCs, four pumps, and multiple radiators, that extra layer of monitoring provides added protection against failures.
Photos shared by the builder show a cooling arrangement that resembles a dedicated server-room project more than a typical gaming setup. The dual MORA radiators dominate the wall, while the reservoirs, pumps, tubing, and monitoring hardware create a complex network connecting everything together.
The project generated plenty of discussion among PC enthusiasts, particularly because of its scale. External radiators are already uncommon in gaming PCs, but dual MORA 400 units paired with four pumps and two reservoirs place this build in a category rarely seen outside extreme custom water-cooling projects.
The owner was also asked about the large number of fans visible inside the PC cases. His answer was straightforward: many of them were installed simply because they looked good. Even with the enormous external cooling wall doing most of the heavy lifting, the extra fans remain part of the overall aesthetic of the build.
While most gamers rely on air coolers or compact liquid-cooling solutions, this setup takes a very different approach. Between the dual Ryzen 7 7800X3D systems, giant MORA radiators, wall-mounted cooling hardware, and temperatures staying below 32°C, it stands out as one of the more ambitious enthusiast PC projects shared online this year.
Source: Reddit (Key-Cap-8617)
