Most desktop builders will never need more than an 850-watt PSU, and even 1,200-watt models are typically reserved for extreme enthusiasts or workstation-grade projects. But Corsair has shattered expectations with the debut of its WS3000 power supply, a monster capable of delivering a full 3,000 watts of output. In terms of raw capacity, it’s a new milestone for power supplies designed to fit inside a standard ATX case, raising the bar on what desktop hardware can demand.
The WS3000 is built with modern high-power components in mind. It features six 8-pin CPU rails and four 12V-2×6 GPU connectors that comply with the latest PCIe 5.1 and ATX 3.1 standards, ensuring compatibility with the most demanding multi-GPU setups on the market. The unit itself is 175mm long and cooled by a robust 140mm double-ball-bearing fan, built for endurance rather than whisper-quiet operation. Corsair has notably excluded RGB lighting and its iCue monitoring system, a choice that emphasizes professional functionality over aesthetics—something many builders will see as a welcome change.
In terms of use cases, Corsair isn’t pitching the WS3000 to average gamers. Instead, it’s targeting creative professionals and enterprise-level system integrators who need to power enormous workloads. That includes tasks like real-time 3D rendering, high-resolution video editing, or training machine-learning models that would overwhelm typical hardware setups. With multiple GPUs drawing full power simultaneously, stability is critical, and the WS3000’s massive overhead provides exactly that.
This kind of performance doesn’t come cheap. Corsair lists the unit at $600, though early retail sightings suggest that prices may dip below the MSRP depending on the vendor. While undeniably a niche product, the WS3000 fills an important gap for professionals who need server-grade power in a desktop-compatible package. For those pushing the limits of PC performance, Corsair’s latest creation stands as one of the most extreme options available on the market today.