High-capacity power supplies from 1000W and beyond are usually reserved for extreme-performance content creation and enthusiast-grade gaming PC build.
At this power range, you will be building with a powerful, power-hungry CPU and GPU combination like the Intel 13900K and the high-end RTX 4090.
Such high-power units are also the go-to PSUs for ultra-powerful multi-GPU and dual-CPU systems and superior dual-system PC builds.
At this level of power draw, you should get a top-tier power supply with a robust build design with premium internal components for unwavering reliability!
Here’s my recommendation for the best 1000W PSUs for extreme PC builds. They are all high-efficiency units with unrivaled stability and durability!
Corsair RM1000x Shift—Overall Best 1000W PSU
The Corsair RMx Shift Series PSUs are exceptionally built for a highly reliable power supply to extreme PC builds. They feature innovative side-mounted connectors for an easy DIY building experience!
These units are fully modular and meet ATX 3.0 standards for high-level power efficiency and reliability. The RM1000x Shift has a 140mm FDB fan with a zero RPM mode that runs entirely silent for 50% and below loads.
The Corsair RM1000x Shift has a top-of-the-range construction for exceptional stability, reliability, and durability. It comes with a 10-Year warranty at competitive pricing to make it the best 1000W PSU in the market!
Thermaltake Toughpower GF3 1000W Gold—Best 1000W PSU for Under $200
At 1000W and beyond, power supplies don’t come cheap! At this range, manufacturers understand that PC builders are looking for top-end specs, and such features come at a price!
The Toughpower GF3 1000W Gold delivers unique feature sets at under $200, which is quite competitive. As expected of Thermaltake, the unit is exceptionally built for a reliable power supply.
The Thermaltake Toughpower GF3 1000W Gold has excellent quality with premium components for a steady, stable, and reliable PSU. The smart zero fun switch allows silent operation at low loads for quiet productivity!
Corsair RM1000x (2021)—Best Value 1000W Power Supply
The Corsair RM1000x belongs to the same family as the RM1000x Shift. It’s also incredibly well-built, with an 80+ Gold certification and over 90% peak efficiency.
