CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 - vs CORSAIR RM1000e

Overview of the Power Supplies

In this comparison, we examine two power supplies from Corsair: the RM1200x SHIFT and the RM1000e. The RM1200x SHIFT is priced at £174.98, while the RM1000e is slightly more affordable at £149.88. Both models are fully modular and certified with Intel's ATX 3.1 standard, ensuring they meet modern power requirements for high-performance systems.

Design and Cable Management

The RM1200x SHIFT boasts an innovative design with modular connections on the side, allowing for easier access and improved cable management. This feature is particularly beneficial for users who value a clean build and optimised airflow. In contrast, the RM1000e, while also fully modular, does not highlight unique design elements for cable management, which may make the RM1200x SHIFT the more appealing option for those prioritising aesthetics.

Efficiency and Power Delivery

Both power supplies are designed for efficiency, with the RM1200x SHIFT featuring 100% 105°C-rated Japanese electrolytic capacitors for reliable power delivery. The RM1000e also utilises 105°C-rated capacitors, ensuring solid performance. However, the RM1200x SHIFT's premium internal components may provide an edge in long-term reliability, making it a better choice for users who plan to push their systems to the limit.

Noise Levels

Noise performance is a crucial factor for many users. The RM1200x SHIFT features a 140mm fluid dynamic bearing fan, which utilises a specially calculated fan curve to maintain low noise levels while delivering high performance. On the other hand, the RM1000e is equipped with a 120mm rifle bearing fan, also designed for quiet operation under full load. However, the larger fan in the RM1200x SHIFT may offer superior cooling and quieter performance, particularly in high-intensity scenarios.

Certification and Compliance

Both power supplies are Intel ATX 3.1 certified, supporting the latest PCIe Gen 5.1 platforms. The RM1000e is specifically noted for withstanding 2x transient power excursions from the GPU, ensuring stability during demanding tasks. The RM1200x SHIFT similarly complies with the ATX 3.1 standard and is designed to resist transient power spikes, which is crucial for high-performance gaming and workstation builds. Users can expect robust performance from either unit in terms of compliance with modern standards.

Component Quality

The RM1200x SHIFT uses high-quality materials, including 100% Japanese electrolytic capacitors rated at 105°C, which contribute to its reliability and efficiency. The RM1000e, while also featuring 105°C-rated capacitors, does not specify the same level of component quality. For users who prioritise longevity and reliability in their components, the RM1200x SHIFT may be the preferable choice, particularly for long-term builds.

Price and Value

The RM1200x SHIFT is priced at £174.98, while the RM1000e is available for £149.88. Although the RM1200x SHIFT carries a higher price tag, it offers additional features like the innovative side-mounted modular connections and a larger cooling fan. The RM1000e provides excellent value as a reliable and efficient power supply at a lower cost, making it an attractive option for budget-conscious consumers who still want quality.

Which should you buy?

Deciding between the RM1200x SHIFT and the RM1000e ultimately comes down to your specific needs. If you are looking for a power supply with superior build quality, innovative design for cable management, and robust cooling capabilities, the RM1200x SHIFT is worth the investment at £174.98. However, if you are seeking a reliable, efficient power supply that delivers solid performance at a lower price of £149.88, the RM1000e is an excellent choice. Each power supply has its strengths, making them suitable for different types of users and builds.