PGC NEWS

The demand for high-wattage power supplies has surged alongside the increasing power consumption of modern graphics cards. Manufacturers have responded by incorporating new technologies, ranging from the 12V-2×6 connector of the ATX 3.1/PCIe 5.1 standard and robust components to advanced cooling solutions and higher efficiency requirements. With next-gen GPUs on the horizon, Corsair has updated its RMx series to the ATX 3.1 standard, exemplified by the Corsair RM1000x. This review explores whether this high-end PSU can truly meet the demands of today’s and tomorrow’s power-hungry components.

Corsair RM1000x Power Supply

Quiet Performance and Modern Standards

Unlike some PSUs with flashy RGB or OLED displays, the Corsair RM1000x prioritizes performance and efficiency. Its design focuses on high-quality capacitors and an upgraded cooling system for minimal noise. The packaging highlights key features: ATX 3.1/PCIe 5.1 compliance, Cybernetics noise and efficiency certifications, and the 1000W power rating.

Corsair RM1000x Packaging

Eco-conscious packaging with reduced plastic protects the RM1000x and its accessories. The modular design features Type-4 cables with a thin braided sleeving, offering improved flexibility compared to traditional mesh sleeving, although not as flexible as the fabric cables found in Corsair’s SF Series or the separately sold Premium Individually Sleeved Type 4 cables.

Ample Connections for High-End Hardware

The RM1000x caters to demanding systems with two EPS/ATX 12V 8-pin (4+4) connectors and four PCIe 8-pin (6+2) connectors. This supports up to six CPU and PCIe connections, exceeding the configurations of many competitors and accommodating setups with multiple CPUs and GPUs.

Corsair RM1000x Cables

Included cable combs enhance cable management, allowing for clean and aesthetically pleasing routing. The cables demonstrate excellent flexibility, simplifying organization within the case.

The 12V-2×6 Connector: Future-Proofing Power Delivery

Adopting the ATX 3.1/PCIe 5.1 standard, the RM1000x features the 12V-2×6 connector, designed to address potential issues with the previous 12VHPWR connector. This new connector offers improved compatibility and safety for power-hungry GPUs, ensuring stable and reliable power delivery.

Corsair RM1000x 12V-2×6 Connector

Zero RPM Mode and Cybernetics Certification

The RM1000x features a Zero RPM fan mode for silent operation under low loads (below 50% capacity). A physical switch allows for manual fan control. Corsair has opted for Cybernetics certification instead of the traditional 80 Plus, providing more granular performance and noise level metrics. The RM1000x boasts a Cybernetics Gold efficiency rating and a Cybernetics A- noise level rating.

Corsair RM1000x Fan Switch

Real-World Performance

Tested with demanding hardware, including modern CPUs and a high-end graphics card, the RM1000x provided stable power even in Zero RPM mode. Under heavy load, the PSU maintained consistent performance without voltage drops or instability.

Corsair RM1000x Internal Components

Conclusion

The Corsair RM1000x offers a compelling blend of performance, efficiency, and quiet operation. Its high-quality components, modern connectivity, and advanced cooling features make it a suitable choice for demanding systems, both present and future. The RM1000x represents a valuable investment for users seeking a reliable and long-lasting power solution.