CORSAIR RM850e vs be quiet! Power Zone 2 850W ATX 3.1 PSU

Price Comparison

The CORSAIR RM850e is priced at C$184.99, making it a slightly more economical choice compared to the be quiet! Power Zone 2, which retails for C$187.50. While the difference of C$2.51 may seem minimal, it can influence budget-conscious buyers who are looking to save on their power supply investment. Both products are positioned in a similar price bracket, indicating they are geared towards the high-performance market, but the CORSAIR RM850e holds a slight edge in affordability.

Efficiency Ratings

The be quiet! Power Zone 2 boasts an impressive 80 PLUS Platinum certification, achieving energy efficiency ratings of up to 94.1%. This high level of efficiency translates into lower power consumption and a cooler, quieter operation, making it ideal for high-end systems. In contrast, the CORSAIR RM850e does not specify its efficiency rating but is Intel ATX 3.1 certified, supporting PCIe 5.1 platforms. While it ensures reliable performance, it does not match the Power Zone 2's efficiency metrics, which could be a deciding factor for users focused on energy savings.

Cooling Performance

Cooling performance is a crucial aspect of any power supply, and here the be quiet! Power Zone 2 excels with its semi-passive zero-RPM cooling feature. The 140mm Pure Wings 3 fan remains off during low-load scenarios, ensuring silent operation until higher loads necessitate its activation. This smart cooling system helps maintain a quieter environment during less intensive tasks. The CORSAIR RM850e, while equipped with a 120mm rifle bearing fan designed for low noise, does not offer the same level of silent operation under low loads, potentially making the Power Zone 2 a better choice for noise-sensitive setups.

Build Quality and Reliability

Both power supplies are designed with reliability in mind, but the be quiet! Power Zone 2 takes the lead with its German engineering and quality assurance. The use of premium components ensures long-lasting performance, and the PSU's capability to handle power excursions up to double its rated power demonstrates exceptional reliability. The CORSAIR RM850e also incorporates 105°C-rated capacitors for dependable electrical performance, but it lacks the same robust build quality claims as the Power Zone 2, which may make the latter more appealing to hardcore enthusiasts.

Modular Design

When it comes to modular design, both power supplies offer fully modular cabling, allowing users to connect only the cables necessary for their specific builds. This feature enhances cable management and airflow within the case, leading to a cleaner and more efficient setup. The CORSAIR RM850e's fully modular design ensures ease of installation and flexibility for future upgrades. Similarly, the be quiet! Power Zone 2 also provides a versatile configuration with its native integration of the 12V-2x6 connector for next-generation GPUs, making both products well-suited for custom builds.

Compatibility with Modern Systems

The compatibility with contemporary systems is another critical factor. The CORSAIR RM850e is compliant with the ATX 3.1 power standard and supports the PCIe 5.1 platform, which can withstand significant power excursions from the GPU. On the other hand, the be quiet! Power Zone 2 is designed with future-proofing in mind, featuring both native integration for next-gen PCIe 5.1 graphics cards and multiple PCIe 6+2-pin connectors for current-generation GPUs. This makes the Power Zone 2 exceptionally versatile for users looking to build or upgrade to high-performance systems.

Noise Levels

Noise levels are an essential consideration for many users, particularly those building a quiet PC. The be quiet! Power Zone 2 is engineered for silence, with its Pure Wings 3 fan designed to operate quietly across various load scenarios. The semi-passive cooling feature ensures that the fan only activates under higher loads, leading to a quieter overall experience. The CORSAIR RM850e also aims for low noise with its specially calculated fan curve, but it may not reach the same level of silence as the Power Zone 2 under low-load conditions.

Which should you buy?

In conclusion, the choice between the CORSAIR RM850e and the be quiet! Power Zone 2 ultimately depends on your specific needs and preferences. The CORSAIR RM850e offers a slightly lower price and is compliant with modern ATX standards, making it an excellent choice for budget-conscious users. However, if energy efficiency, silent operation, and superior build quality are your top priorities, the be quiet! Power Zone 2, with its 80 PLUS Platinum certification and smart cooling features, provides a compelling argument for its higher price tag. Each power supply has its strengths, so consider what aspects are most important for your system before making a decision.