CORSAIR RM850e vs CORSAIR RM1200x SHIFT Fully Modular ATX Power Supply - 80 PLUS Gold - ATX 3.1 -

Price Comparison

The CORSAIR RM850e is priced at £85.99, while the CORSAIR RM1200x SHIFT comes in significantly higher at £174.98. This price difference of £88.99 reflects the varying specifications and features offered by each power supply. The RM850e positions itself as a more budget-friendly option for users who require reliable performance without breaking the bank, whereas the RM1200x SHIFT targets those looking for enhanced features and higher power capacity, justifying its premium price tag.

Power Output and Efficiency

In terms of power output, the RM850e offers up to 850 watts, making it suitable for most mid-range systems, while the RM1200x SHIFT provides a more robust 1200 watts. This substantial difference allows the RM1200x SHIFT to support higher-end components and multiple GPUs, making it an ideal choice for gamers and professionals with demanding systems. Both power supplies are certified under the Intel ATX 3.1 standard, ensuring they can handle the latest technologies and transient power excursions without issue, but the RM1200x SHIFT's capability to withstand more power makes it a superior choice for high-performance builds.

Modular Design

The RM850e features a fully modular design, allowing users to connect only the cables necessary for their system, which simplifies cable management and enhances airflow within the case. On the other hand, the RM1200x SHIFT not only offers a fully modular design but also introduces innovative side-mounted connections that make access easier and promote cleaner cable management. This design may appeal to users who frequently upgrade their systems or desire a more aesthetically pleasing build. The improved accessibility of the RM1200x SHIFT provides a tangible advantage for those prioritising a tidy setup.

Cooling and Noise Levels

Both power supplies utilise advanced cooling systems to maintain optimal performance and minimise noise. The RM850e is equipped with a 120mm rifle bearing fan, while the RM1200x SHIFT utilises a larger 140mm fluid dynamic bearing fan. The larger fan in the RM1200x SHIFT is designed to operate more quietly, even under full load, thanks to its specially calculated fan curve. While the RM850e keeps noise levels low, the RM1200x SHIFT may offer a quieter experience overall, particularly during demanding tasks, making it a strong contender for users sensitive to noise.

Component Quality

When it comes to component quality, both power supplies are built to last, featuring 105°C-rated capacitors. However, the RM1200x SHIFT boasts 100% Japanese electrolytic capacitors, which are typically regarded as superior in terms of performance and longevity. This focus on premium internal components in the RM1200x SHIFT may provide additional peace of mind for users planning long-term investments in their systems. The RM850e, while reliable, may not offer the same level of assurance regarding component quality.

Compatibility and Future-Proofing

The RM850e is a solid choice for current systems, supporting the latest PCIe 5.1 platforms and meeting the demands of mid-range builds. However, the RM1200x SHIFT offers a more future-proof option due to its higher wattage and advanced design features. Its compliance with the ATX 3.1 standard ensures compatibility with upcoming hardware, making it a better investment for users looking to upgrade their systems in the near future. The RM1200x SHIFT's ability to handle transient power spikes also provides an added layer of reliability for cutting-edge components.

User Experience and Installation

Both power supplies emphasise user-friendly installation. The fully modular design of the RM850e allows for a straightforward setup, enabling users to connect only the cables they need. The RM1200x SHIFT enhances this experience further with its easy-access side connections, making cable management less of a hassle. This thoughtful design consideration can significantly reduce installation time and effort, appealing to both novice and experienced builders alike.

Which should you buy?

Choosing between the CORSAIR RM850e and the CORSAIR RM1200x SHIFT ultimately depends on your specific needs and budget. If you are looking for a reliable, cost-effective power supply for a mid-range system, the RM850e is an excellent choice at £85.99. However, if you require a higher wattage for a more powerful setup, or if you value advanced features like superior cooling and innovative cable management, the RM1200x SHIFT at £174.98 will be worth the investment. Consider your current and future system requirements carefully to make the best decision.