Corsair HX1000i Fully Modular Ultra-Low Noise ATX vs CORSAIR RM850e Fully Modular Low-Noise ATX Power

Pricing Comparison

The Corsair HX1000i is priced at $234.99, while the CORSAIR RM850e is significantly cheaper at $94.99, making it about 60% less expensive. This price difference may be a crucial factor for budget-conscious consumers. While the HX1000i offers advanced features suitable for high-end builds, the RM850e provides solid performance at a lower cost. Depending on your budget and requirements, you may find the RM850e to be a more appealing option without sacrificing essential functionality.

Power Efficiency

The Corsair HX1000i boasts an 80 Plus Platinum efficiency rating, ensuring that it delivers exceptional power efficiency. In contrast, the RM850e carries a Cybenetics Gold efficiency rating, which is still commendable but not as high as the HX1000i. This means that while both power supplies are efficient, the HX1000i is designed for users prioritizing maximum power efficiency, potentially leading to lower electricity bills over time. If energy efficiency is a top concern, the HX1000i may be the better choice.

Modular Design

Both the Corsair HX1000i and the RM850e are fully modular power supplies, allowing users to connect only the cables they need for their system builds. This feature is essential for maintaining a clean and organized PC interior. The HX1000i is equipped with a 140mm Fluid Dynamic Bearing Fan, which offers ultra-low noise operation. Meanwhile, the RM850e features a 120mm rifle bearing fan that keeps noise levels down even under load. Users looking for a tidy build with customizable cable management will benefit from either option.

Cooling Solutions

The cooling capabilities differ between the two models. The HX1000i’s 140mm Fluid Dynamic Bearing Fan is specifically designed for quiet operation and long-lasting performance. It also includes a Zero RPM Fan Mode, which allows the fan to turn off during low to medium loads, providing near-silent operation. On the other hand, the RM850e's 120mm rifle bearing fan operates with a specially calculated fan curve to minimize noise. While both fans are effective, those who prioritize silence may lean towards the HX1000i due to its Zero RPM mode.

Compatibility and Standards

Both power supplies are compliant with the ATX 3.1 standard and support PCIe 5.1, making them suitable for modern PC builds requiring high power demands. The HX1000i has been designed to withstand transient power spikes, making it ideal for high-performance components. The RM850e also supports transient power excursions, ensuring reliability during peak loads. Users can feel confident that either unit will meet the demands of contemporary hardware, but the HX1000i's additional certifications may appeal to those with more demanding systems.

Build Quality and Warranty

When it comes to build quality, both power supplies utilize high-quality components. The HX1000i features Japanese 105°C-rated electrolytic capacitors, which contribute to its long life and reliability, backed by a ten-year warranty. In comparison, the RM850e also utilizes 105°C-rated capacitors but comes with a seven-year warranty. The extended warranty on the HX1000i reflects its higher-end positioning and reliability, making it a more attractive option for long-term use. If longevity and durability are key factors, the HX1000i may hold an advantage.

User Experience and Software

The Corsair HX1000i offers a powerful software experience with CORSAIR iCUE, allowing users to create custom fan curves, monitor power settings, and toggle between single and multi-rail overcurrent protection. This level of customization is a significant advantage for enthusiasts who want to fine-tune their systems. Conversely, the RM850e lacks an equivalent software interface, focusing instead on reliable performance without the additional bells and whistles. For users who value software integration and monitoring, the HX1000i presents a more compelling option.

Which should you buy?

Choosing between the Corsair HX1000i and the CORSAIR RM850e ultimately depends on your specific needs and budget. The HX1000i, priced at $234.99, offers superior efficiency, advanced cooling features, and extensive software support, making it ideal for high-end builds where performance and longevity are paramount. On the other hand, the RM850e, at $94.99, provides solid performance at a significantly lower price point, making it an excellent choice for budget-conscious users who still want reliable power delivery. Evaluate your requirements carefully, and you’ll find that either power supply has the potential to meet your needs effectively.