Redditor crafts insane Quad RTX 5090 PC
This quad-RTX 5090 PC requires two 2400W PSUs to function
Sometimes, we wish that SLI and CrossFire were still a thing. There was something magical about the multi-GPU madness of pre-DirectX 12 PC gaming. Thanks to Zestyclose-Salad-290 on Reddit, we can see what today’s highest-end SLI PCs would have looked like. This PC uses a Quad RTX 5090 GPU setup, utilising four ASUS ROG Astral RTX 5090 GPUs.
Zestyclose-Salad-290 4X RTX 5090 PC uses a dual-chambered PC case with one chamber featuring a liquid-cooled Intel Xeon CPU and another that contains four RTX 5090 GPUs. These GPUs are connected to this PC’s motherboard using PCIe 5.0 riser cards.
Powering this system are two 2400W power supplies, with one PSU in each chamber of this PC case. This system has a total of 4800W of power available. Since Nvidia’s RTX 5090 is a 575W GPU, this PC calls for 2300W of power for its graphics cards alone. Add on this system’s memory, CPU and other components, and its clear that just one 2400W PSU wouldn’t be enough to fuel this insane system.
(Images from Reddit user Zestyclose-Salad-290)
Sadly, GPU manufacturers no longer support multi-GPU setups for gaming. Even so, just imagine how high your framerates would be if multi-GPU performance scaling were still a thing!
With a single ASUS ROG Astral RTX 5090 costing £2,599.99 in the UK, this monster of a rendering PC contains over £10,000’s worth of graphics cards alone. That’s a crazy amount of money for any system, and that’s just the GPU cost.
You can join the discussion on this insane 4x RTX 5090 PC on the OC3D Forums.

