CORSAIR RM850e vs CORSAIR CX550 80 Plus Bronze Non Modular Low-Noise ATX 550 Watt Power Supply - N

Overview of Power Supplies

When it comes to power supplies, choosing the right model can significantly impact your system’s performance and efficiency. The CORSAIR RM850e and the CORSAIR CX550 80 Plus Bronze are two distinct offerings from Corsair, catering to different needs and budgets. The RM850e is priced at C$184.99, providing a higher wattage and advanced features, while the CX550 is more budget-friendly at C$84.99, featuring a lower wattage but still delivering reliable performance.

Efficiency and Certification

The efficiency of a power supply is crucial for both performance and energy consumption. The CORSAIR CX550 boasts an 80 PLUS Bronze certification, ensuring up to 88% operational efficiency. This certification translates to reduced heat generation and lower energy costs. In contrast, while the RM850e does not specify an efficiency rating in the provided data, it is Intel ATX 3.1 certified, which indicates compatibility with the latest power standards and support for PCIe 5.1. This position suggests that the RM850e likely performs efficiently under various loads, although specific efficiency figures are not disclosed.

Power Output Comparison

Power output is a key factor when selecting a power supply, particularly for high-performance systems. The CORSAIR RM850e delivers a robust 850 watts, making it ideal for demanding applications, including gaming rigs with multiple GPUs. On the other hand, the CORSAIR CX550 provides 550 watts of continuous power. While the CX550 is suitable for mainstream systems, those looking for a power supply to support high-end components may find the RM850e more appropriate due to its higher capacity.

Modularity and Cable Management

When it comes to cable management, the type of power supply can make a significant difference. The CORSAIR RM850e features fully modular cabling, allowing users to connect only the cables required for their specific build. This not only simplifies installation but also enhances airflow within the case. In contrast, the CORSAIR CX550 is a non-modular supply, meaning all cables are permanently attached. While this can complicate cable management, it may still suit users who prefer a simpler setup without the need for extensive cable routing.

Cooling Performance

Cooling performance is essential in maintaining the longevity and efficiency of power supplies. The CORSAIR RM850e employs a 120mm rifle bearing fan designed to operate quietly, even under full load, thanks to a specially calculated fan curve. This ensures minimal noise disruption during operation. Meanwhile, the CORSAIR CX550 also features a 120mm thermally controlled low-noise cooling fan that only ramps up under heavy stress, allowing for quieter operation at lower loads. Both models are designed for low noise, but the RM850e may provide a quieter experience overall, particularly during demanding tasks.

Build Quality and Reliability

Build quality is paramount in ensuring the reliability of a power supply over time. The CORSAIR RM850e is built with 105°C-rated capacitors, which contribute to stable and reliable power delivery. This high-quality construction assures users of dependable electrical performance. The CORSAIR CX550, while also reliable, does not specify capacitor ratings in the provided data. However, it guarantees full continuous power delivery, ensuring that users receive consistent performance regardless of system demands.

Compatibility and System Requirements

Compatibility is a significant consideration when selecting a power supply. The CORSAIR RM850e is designed with modern systems in mind, being Intel ATX 3.1 certified and supporting the latest PCIe standards. This makes it an excellent choice for users who plan to build or upgrade to high-performance systems. Conversely, the CORSAIR CX550, while suitable for most standard builds, may not meet the requirements for cutting-edge components that demand higher wattages and newer power standards.

Which should you buy?

Choosing between the CORSAIR RM850e and the CORSAIR CX550 ultimately depends on your specific needs and budget. If you require a high-capacity, fully modular power supply with advanced features and quieter operation, the RM850e at C$184.99 is the superior choice. However, if you are looking for an economical option that still delivers reliable performance for standard systems, the CX550 at C$84.99 presents an attractive alternative. Assess your system's requirements carefully to make the most informed decision.