In the high-end world, the boundaries are constantly pushing. But what a user on Reddit recently unveiled goes beyond even the wildest imaginations. He’s outfitted his “battlestation” with four ASUS ROG Astral RTX 5090 graphics cards at once, creating one of the most extreme gaming machines out there.
The total value of the GPUs themselves? Approximately $12,950 which is a sum you could easily buy a family car for. This project immediately caught the attention of the tech community and became a symbol of both the sheer power and insanity that accompanies the launch of NVIDIA’s latest generation of Blackwell cards .
The design and cooling of this build
Each of the ASUS ROG Astral RTX 5090 cards are among the latest models in the ROG lineup, combining a massive three-fan design with a premium metal frame and ARGB lighting. ASUS used an improved Axial-Tech system for the Astral series, where larger, lower-speed propellers achieve better airflow at lower noise levels.
In this configuration, however, four such monsters mean one thing – extreme heat. Each card has a claimed wattage of around 600W, so a quad build can draw up to 2,400W under load for the GPU alone. The system owner did use a 2400-watt power supply, but the community immediately questioned its stability.
The cooling was designed to provide the best airflow in the case – but physically it’s such a massive build that it takes up almost all the space. The cards themselves weigh more than 10kg in total, so vertical mounting brackets and steel reinforcements had to be used to avoid overloading the PCIe slots.
Technical specifications of the ASUS ROG Astral RTX 5090
Like the Matrix models, the Astral series is based on the NVIDIA Blackwell GB202 architecture. It offers 32 GB of GDDR7 memory with a 512-bit bus and a VRAM speed of 28 Gbps. On the performance side, it’s a monster – the card has 21,760 CUDA cores, next-generation Gen 3 RT cores, and Gen 2 AI acceleration.
Compared to the RTX 4090, this is a more than 70% increase in compute performance at 4K to 8K resolutions. Additionally, the Astral model is one of the best cooled versions in the entire ASUS portfolio, designed for long-term OC profiling and professional workstation tasks.
In the tested build, four such cards are plugged into a special motherboard with increased current capacity and improved PCIe slot layout. Despite the fact that SLI and NVLink are no longer officially supported, the build can efficiently distribute computations in professional AI and rendering tasks.
Estimated price of the kit
Each ASUS ROG Astral RTX 5090 card sells for around $3,300 USD in the US market, so a quad configuration represents an investment of over $12,800 for the GPU alone. The total price of the entire build (including motherboard, processor, power supply and cooling) can exceed $19,300 to $21,400 USD. The kit thus goes far beyond casual gaming – it is a challenge and a visual manifestation of performance for the most demanding enthusiasts.
Conclusion
The ASUS ROG Astral RTX 5090 quad build is not a product from a store, but a pure manifestation of hardware passion. The enthusiast built it himself – not because he needed it, but because he could. Four flagship GPUs in one box don’t feel like a computer, they feel like a piece of technological art. It’s not practical, it’s not sensible, but it’s fascinating, and that’s where the beauty of the computing world lies.
The ASUS ROG Astral RTX 5090 delivers extreme performance, premium cooling, and a design that every high-end hardware enthusiast will love.