be quiet! Pure Power 13 M 1000W Power Supply, 80 vs CORSAIR RM850x Fully Modular Low-Noise ATX Power

Pricing Comparison

The be quiet! Pure Power 13 M 1000W Power Supply is priced at $139.90, making it about 17% cheaper than the CORSAIR RM850x, which is priced at $161.93. This significant price difference could influence buyers who are budget-conscious and looking for a quality power supply without breaking the bank. While the Pure Power 13 M offers slightly more wattage, the RM850x still commands a reasonable premium for its features.

Efficiency Ratings

The efficiency of power supplies is crucial for performance and cost savings. The be quiet! Pure Power 13 M holds an 80 PLUS Gold certification, boasting an efficiency rating of up to 94.4%. In comparison, the CORSAIR RM850x is Cybenetics Gold-certified, achieving up to 91% efficiency. While both power supplies are highly efficient, the Pure Power 13 M has the upper hand with its higher efficiency rating, promising lower energy consumption and cooler operation.

Modular Design

Both power supplies feature modular designs, allowing for flexible cable management. The be quiet! Pure Power 13 M utilizes modular cables to eliminate unnecessary clutter, ensuring a tidy build. The CORSAIR RM850x is also fully modular, making installation easy by allowing users to connect only the cables they need. While both designs simplify cable management, the CORSAIR's ultra-flexible embossed cables offer a slightly more aesthetically pleasing and user-friendly installation experience.

Cooling Technology

Cooling is essential for maintaining optimal performance in high-demand situations. The be quiet! Pure Power 13 M incorporates a semi-passive zero-RPM cooling feature, meaning its fan operates only under higher loads, promoting quieter operation during low-load scenarios. Conversely, the CORSAIR RM850x features a 140mm FDB fan designed for low-noise cooling, ensuring dependable performance with minimal sound. While both units focus on quiet operation, the Pure Power 13 M’s semi-passive design may provide a more silent experience during low usage.

Future-Proof Features

Future-proofing is a key consideration for many builders. The be quiet! Pure Power 13 M is ATX 3.1 compliant and supports PCIe 5.1 graphics cards with its native 12V-2x6 connector, making it a versatile option for both current and future systems. The CORSAIR RM850x also complies with ATX 3.1 and supports PCIe 5.1, ensuring compatibility with modern hardware. While both power supplies are designed to be future-proof, the be quiet! model offers an additional 150W of continuous power, which may be beneficial for high-performance builds.

Brand Reputation

Brand reputation can significantly influence purchasing decisions. be quiet! is known for producing high-quality, quiet cooling solutions, and its Pure Power line has a solid following among enthusiasts. Meanwhile, Corsair has built a reputation for reliability and high performance in the gaming and PC building communities. The choice may come down to personal preference and brand loyalty, as both brands are respected in the industry.

Warranty and Support

Warranty length can be a critical factor when investing in power supplies. The be quiet! Pure Power 13 M does not explicitly state its warranty period, while the CORSAIR RM850x comes with a ten-year warranty, signaling confidence in its longevity and reliability. This extended warranty could provide peace of mind for buyers concerned about long-term performance, making the CORSAIR a more appealing option for those prioritizing warranty support.

Which should you buy?

Choosing between the be quiet! Pure Power 13 M 1000W Power Supply and the CORSAIR RM850x comes down to individual needs and preferences. The Pure Power 13 M is about 17% cheaper, offers higher efficiency, and more wattage, making it a fantastic choice for budget-conscious users seeking a powerful and quiet PSU. On the other hand, the CORSAIR RM850x boasts a ten-year warranty and a more user-friendly installation experience, appealing to those who value brand reputation and long-term reliability. Ultimately, both are excellent options, but your choice should align with your specific requirements and priorities in a power supply.