CORSAIR RM650e vs Corsair HX1000i Fully Modular Ultra-Low Noise ATX Power Supply - ATX 3.1 & PCIe

Overview of the Power Supplies

The CORSAIR RM650e and Corsair HX1000i are two highly regarded power supplies that cater to different user needs and budgets. The RM650e is priced at £71.57, whereas the HX1000i is significantly more expensive at £169.99. This price difference reflects the features and capabilities of each unit, making it essential to understand what each power supply offers in terms of performance and usability.

The RM650e is a fully modular power supply that prioritises efficiency and low noise levels, while the HX1000i offers advanced features such as customisation through iCUE software. Both units comply with the Intel ATX 3.1 standard, ensuring compatibility with the latest platforms. This comparison will delve into various aspects, including modularity, cooling performance, and overall features.

Modularity and Cable Management

Both the CORSAIR RM650e and Corsair HX1000i boast fully modular designs, allowing users to connect only the cables necessary for their builds. This feature is crucial for maintaining a clean and organised system, especially in more complex setups.

The modularity aspect is particularly significant for the RM650e, which is designed to foster a tidy build without excess cables cluttering the case. While the HX1000i also provides this benefit, its higher price tag comes with added features that may justify the cost for users who value extensive customisation options. Ultimately, both power supplies excel in modularity, making them user-friendly for builders who appreciate neatness.

Cooling Performance

When it comes to cooling performance, the HX1000i has the upper hand with its 140mm Fluid Dynamic Bearing (FDB) fan, which is engineered to deliver quiet and efficient operation. In comparison, the RM650e utilises a 120mm rifle bearing fan, which, while effective, may not match the whisper-quiet performance of the HX1000i.

The HX1000i’s advanced cooling technology also features a Zero RPM Fan Mode, allowing the fan to switch off entirely at low to medium loads for an almost silent operation. This is particularly appealing for users who prioritise a quiet computing environment. Conversely, the RM650e remains quiet under load, but the HX1000i’s cooling system provides an edge for those who require absolute silence.

Power Delivery and Efficiency

The RM650e delivers 650 watts of reliable power, which is suitable for most mid-range builds. It is equipped with 105°C-rated capacitors, ensuring steady performance even under demanding conditions. The RM650e is particularly notable for its efficiency and compliance with the ATX 3.1 standard, making it a solid choice for users looking for a dependable power supply.

On the other hand, the HX1000i offers a more powerful 1000 watts, making it ideal for high-performance systems or those that may require additional power for overclocking and multiple GPUs. Both units are designed to handle transient power excursions from GPUs, but the HX1000i’s higher wattage provides greater headroom for demanding configurations.

Features and Software Integration

The feature set of the HX1000i is more comprehensive, thanks in part to its compatibility with CORSAIR's iCUE software. This allows users to create custom fan curves, monitor power settings, and toggle between different overcurrent protections on-the-fly. Such features add a layer of control and customisation that can significantly enhance the user experience, particularly for enthusiasts and gamers who want to optimise their systems.

In contrast, while the RM650e offers reliable performance and efficiency, it lacks the advanced software integration found in the HX1000i. The absence of such features may lead some users to prefer the HX1000i for its added versatility and control over system performance.

Sound Levels and Noise Management

Sound levels are a crucial consideration for many users, especially those who build systems for gaming or content creation. The HX1000i is designed with a focus on noise management, featuring a Zero RPM Fan Mode that allows for near-silent operation at lower loads. This feature makes it an attractive option for users who want minimal fan noise during light usage.

Conversely, the RM650e also prioritises low noise, with its specially calculated fan curve designed to keep noise levels down even under full load. However, it does not offer the same level of silence under low load as the HX1000i. For users who are particularly sensitive to sound, the HX1000i may be the better choice for a quieter computing experience.

Pricing and Value for Money

The pricing disparity between the RM650e and HX1000i is significant, with the RM650e retailing at £71.57 and the HX1000i at £169.99. This £98.42 difference reflects the additional features and higher power capacity of the HX1000i. While the RM650e provides excellent value for those with moderate power needs, the HX1000i justifies its cost through advanced features and greater power delivery.

For budget-conscious users or those building mid-range systems, the RM650e is an excellent choice that delivers solid performance without breaking the bank. However, for power users, gamers, or individuals looking for extensive customisation and control over their system, the HX1000i offers a robust solution that may warrant the higher investment.

Which should you buy?

The choice between the CORSAIR RM650e and Corsair HX1000i ultimately depends on your specific needs and budget. If you are looking for an affordable, reliable power supply that offers solid performance for mid-range builds, the RM650e is a fantastic choice at £71.57. However, if you require a higher wattage, advanced features, and superior cooling performance, the HX1000i, priced at £169.99, may be worth the investment. Each power supply caters to different audiences, making it essential to evaluate your requirements before making a decision.