Asus has introduced a power supply unit that pushes the boundaries of what a single PC can draw. The company's ROG Thor 3,000W Titanium III Edition 20 can deliver enough electricity to run four GeForce RTX 5090 graphics cards at once.

Extreme Power for Extreme Builds

The 3,000-watt unit carries an 80 Plus Titanium efficiency rating, meaning it wastes less energy as heat than lower-tier supplies. Asus designed the ROG Thor with fully modular cables and a large 200mm fan to cool the internal components. The PSU targets enthusiasts building multi-GPU workstations or the most demanding gaming rigs.

Republic of Gamers, or ROG, has long catered to performance-focused users who want the fastest hardware available. This new PSU represents the extreme end of that philosophy. It can handle transient power spikes that often trip lower-wattage supplies when four top-tier GPUs ramp up simultaneously.

Why This Matters

High-end PC building is entering a new era of power consumption. The RTX 5090 alone is expected to draw substantial wattage under load, and stacking four of them creates an unprecedented demand on a single system's power delivery. This drives three major concerns for consumers.

First, the cost of builds will rise sharply. A 3,000-watt PSU plus four flagship GPUs and supporting components can push system prices well beyond what typical gamers or professionals would pay. Second, cooling becomes a serious challenge. Dissipating heat from so many high-power components requires advanced liquid cooling and careful case airflow planning.

Third, residential power infrastructure may struggle. Standard household circuits in many regions deliver 15 to 20 amps at 120 volts, which limits the maximum continuous draw to around 1,800 to 2,400 watts. A system with a 3,000-watt PSU could trip breakers unless the builder installs a dedicated higher-amperage circuit. This shifts PC building from a plug-and-play hobby into a project that may require electrical work.

Asus's announcement signals that the industry expects GPU power needs to keep climbing. While most users will never need such a massive power supply, the ROG Thor 3,000W Titanium III Edition 20 sets a new ceiling for what's possible in a consumer PC. It also forces the PC community to confront the practical limits of home power delivery.