CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - vs CORSAIR RM1000x SHIFT

Overview

The CORSAIR RM1200x SHIFT and the CORSAIR RM1000x SHIFT are both high-quality power supplies that cater to different power needs. The RM1200x SHIFT is priced at £174.98, while the RM1000x SHIFT comes in slightly cheaper at £164.99. This price difference reflects their respective wattage capacities, making each suitable for distinct types of builds.

The RM1200x SHIFT is designed for those requiring up to 1200 watts, offering greater headroom for demanding systems, especially those with high-performance graphics cards or multiple components. In contrast, the RM1000x SHIFT provides up to 1000 watts, adequate for most modern gaming rigs but potentially limiting for users with extensive upgrades in mind.

Build Quality

Both power supplies boast impressive build quality, featuring durable components that ensure reliability. The RM1200x SHIFT includes 100% 105°C-rated Japanese electrolytic capacitors, which contribute to its long-term reliability and unwavering power delivery. Meanwhile, the RM1000x SHIFT also prioritises quality with its fully modular connectors and debossed PVC cable kit, promoting an ultra-flexible cable management system.

While both products are built to last, the RM1200x SHIFT’s use of premium internal components may provide an edge for users seeking enhanced durability in high-demand environments. The RM1000x SHIFT, however, still offers a robust solution with its high-quality features that suit a wide range of systems.

Cable Management

Effective cable management is crucial for a clean and efficient build. The RM1200x SHIFT features an innovative easy-access connection position, allowing for simpler and cleaner cable management with its modular connections positioned on the side of the PSU. This design choice not only simplifies installation but also improves airflow within the chassis.

Similarly, the RM1000x SHIFT also boasts an easy-access connection position and includes a debossed PVC cable kit for enhanced flexibility. The ultra-flexible cables paired with low-profile combs ensure that users can achieve a neat and tidy look in their builds. Both power supplies excel in cable management, but the RM1200x SHIFT may provide slightly more convenience due to its modular cable configuration.

Noise Levels

Noise levels are a key consideration for power supplies, especially in gaming setups where quiet operation is preferred. Both the RM1200x SHIFT and RM1000x SHIFT utilise a 140mm fluid dynamic bearing fan, which is designed to run quietly while maintaining high performance. The specially calculated fan curve in both models means that users can expect superior reliability and low noise levels under load.

While specific decibel ratings are not provided, the design of the fans in both units suggests they will operate efficiently and quietly. This makes either option suitable for users who value a serene computing environment. However, the potentially higher wattage and load on the RM1200x SHIFT might lead to slightly increased noise levels under peak performance compared to the RM1000x SHIFT.

Efficiency Ratings

Efficiency is vital for any power supply, and both the RM1200x SHIFT and RM1000x SHIFT carry an 80 PLUS Gold certification. This means they operate at a minimum efficiency of 87% under typical loads, which can significantly reduce electricity costs over time. The RM1200x SHIFT’s compliance with the ATX 3.1 power standard allows it to support newer GPU architectures, ensuring a reliable power source for the latest systems.

The RM1000x SHIFT also excels in efficiency, providing a solid power delivery while being a cost-effective option for users who do not need the extra wattage. Both power supplies are designed to minimise energy waste, but the RM1200x SHIFT’s higher capacity may be more appealing for users planning to upgrade to more power-hungry components in the future.

Compatibility

Compatibility is a key factor when selecting a power supply, particularly for custom builds. The RM1200x SHIFT is particularly well-suited for high-performance systems, supporting the latest PCIe Gen 5.1 platform, making it a great choice for users looking to future-proof their builds. Its fully modular micro-fit connectors also facilitate connections only for the cables that are needed.

On the other hand, the RM1000x SHIFT is equally compatible with modern builds, featuring a native 12V-2x6 GPU cable that easily powers contemporary graphics cards, including the NVIDIA GeForce RTX 50 Series. While both models offer excellent compatibility, the RM1200x SHIFT’s additional wattage and modern standards may provide an edge for users with cutting-edge components.

Price Comparison

When it comes to pricing, the RM1200x SHIFT is available for £174.98, while the RM1000x SHIFT is priced at £164.99. The difference of £10 may seem minimal, but it reflects the RM1200x SHIFT’s higher wattage capacity, making it a more suitable option for users with intensive power requirements.

For budget-conscious consumers, the RM1000x SHIFT offers significant savings while still delivering excellent performance and features. Ultimately, the choice between the two may hinge on whether the additional wattage of the RM1200x SHIFT justifies the higher price for your specific needs.

Which should you buy?

Deciding between the CORSAIR RM1200x SHIFT and the CORSAIR RM1000x SHIFT largely depends on your power requirements and budget. If you are building a high-performance system that demands up to 1200 watts, the RM1200x SHIFT is the better choice, providing robust features and future-proofing capabilities. Conversely, if your needs are more modest and you want to save a bit of money, the RM1000x SHIFT at £164.99 offers excellent performance at a slightly lower price point. Both power supplies are reliable and well-built, ensuring that whichever you choose, you're making a sound investment.