Asus 48V Architecture Makes It Safer to Push 1,000W Through a Single GPU Cable
Asus has shown off a unique solution to the GPU power cable overheating problem that has plagued so many RTX 50-series graphics cards at Computex 2026: switch from 12V to 48V. As VideoCardz reports, this allowed it to run an ROG Matrix RTX 5090 at 1,000W over a single cable without overheating concerns.
The generally accepted reason some of Nvidia's high-end Blackwell graphics cards have experienced melting-cable problems is that too much current is flowing through individual wires. That causes a cascade as wires overheat, dumping excess current into the rest of the wires, and it quickly overheats and burns out. Switching from 12V to 48V is no easy task, but in Asus' demo, the system seems much more robust in handling these high-wattage cards.
Featuring a custom PSU converted for the purpose and a bespoke 12V-2x6 cable rated at 48V, the system can reportedly deliver up to 1,200W...
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