The Ultimate RTX 5090 PC Build or a Fire Hazard?
For most PC enthusiasts, owning a single flagship graphics card is the dream. For one Redditor, that wasn’t nearly enough. In a feat of extreme computing, a user has assembled a PC featuring not one, but four ASUS ROG Astral RTX 5090 graphics cards, creating a system that is as much a power supply challenge as it is a technological marvel.
The build, shared by “Zestyclose-Salad-290,” packs the four behemoth GPUs into a dual-chamber case using PCIe 5.0 riser cables. The result is a towering machine where the second chamber is completely dominated by the graphics cards, essentially creating a “GPU crate with a motherboard attached.”
A Power Hungry Beast
The most staggering aspect of this build isn’t the cost—it’s the sheer electricity it consumes. Each RTX 5090 can draw up to 600 watts under load. With four cards, that’s a staggering 2,400 watts for the GPUs alone. After accounting for a high-end CPU and the rest of the system, the total power draw can easily exceed 2,600 watts.
To feed this hunger, the builder installed two 2400-watt power supplies. But here’s the catch: a standard household electrical circuit in the United States is only rated for 1,800 watts (15 amps) or 2,400 watts (20 amps). Running this PC at full tilt would likely trip a standard circuit breaker and, if the wiring isn’t robust, could pose a serious fire risk. As one commenter noted, this isn’t just benchmarking a PC; it’s “load-testing your house wiring.”
A Professional Tool, Not a Gaming Rig
So, what is this $13,000 GPU powerhouse actually for? The owner clarified that the system is dedicated to 3D rendering, a task that can efficiently utilize multiple GPUs simultaneously. Modern video games have largely abandoned multi-GPU support (SLI/NVLink), making this setup overkill for gaming.
Also, Read
- Repair Expert Warns Against Modifying NVIDIA’s RTX 5090 Founders Edition
- MSI Denies Selling RTX 5090 GPUs in China After Photos of Pallets Surface
- Another MSI RTX 5090 Down in Flames” – User Reports $3,000 GPU Destroyed by Melted Power Connector
This build serves as a stark reminder of the extreme end of PC building, where the challenges shift from software compatibility to fundamental electrical engineering. It’s a breathtaking display of hardware that operates on the very edge of what a residential environment can safely support.